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Windows Presentation Foundation

Samples from 2023

Samples with Pictures

Projetname Description Links
XY-Graphics User a usercontrol to show xy-Coordinates and lines. Video_XYGraphics.zip
Video_XYGraphics.jpg
Video_Graphic-Teil1.mp4
Video_Graphic-Teil2.mp4
Video_Graphic-Teil3.mp4
Video_Graphic-Teil4.mp4
Ableitung Show a polynom in a xy-graphic. Use a Usercontrol-Element Ableitungen.zip
Ableitungen.jpg
Video_Graphic-Teil1.mp4
Video_Graphic-Teil2.mp4
Video_Graphic-Teil3.mp4
Video_Graphic-Teil4.mp4
La Grange Polynom Calculate a "La Grange Polynom" from coordinates.
Show the complete polynom. 		LaGrange.zip
LaGrangePolynom.pdf
LaGrange.jpg
Video_Graphic-Teil1.mp4
Video_Graphic-Teil2.mp4
Video_Graphic-Teil3.mp4
Video_Graphic-Teil4.mp4
IDW (inverse distance weighted) Given a some points. The IDW-Algorithmus calculate with a given point (double-click) the value.
The coordinate can also read from a Shape-File (ArcView, QGis) 		IDW.zip
IDW1.jpg
IDW2.jpg
Wikipedia
Video_Graphic-Teil1.mp4
Video_Graphic-Teil2.mp4
Video_Graphic-Teil3.mp4
Video_Graphic-Teil4.mp4
CAD, MS-Paint It's a clone of MS-Paint. But the elements can be edit.
You can export the draw to a DXF-File. 		CAD.zip
CAD.jpg
Charts Use the WPF graphic-tools. You have to copy two dll with the program:
- System.Windows.Controls.DataVisualization.Toolkit.dll
- WPFToolkit.dll
In the zip-file there a many samples. The Picture show only one sample. 		Charts.zip
Charts-1.jpg
Charts-2.jpg
Charts-3.jpg
Charts-4.jpg
Charts.mp4
Data Binding1/2/3 The three project show, how to user data-binding. With data-binding you not need to create an event-method to set the value to a another ui-elements.
Example:
<TextBox Height="35" HorizontalAlignment="Left" Margin="139,53,0,0" Name="textBox1"
Text="{Binding ElementName=slider1, Path=Value,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
VerticalAlignment="Top" Width="219" />

<Slider Height="23" Margin="52,124,68,0" Maximum="1000" Minimum="0" Name="slider1" TickFrequency="100" 		DataBinding.zip
DataBinding.jpg
AudioPlayer The AudioPlayer show in a tree the directories.
You don't need to import the audio-files.
You can select many input-directories.
Input-Sources: mp3, wav, flac
The image "directory.png" have to be in the directory. 		AudioPlayer.zip
AudioPlayer.jpg
Description_Audioplayer.pdf
XML and JSon The project show how to load and save XML and JSon files.
You need to use a netcode project. 		XML_JSon.zip
XML_JSon1.jpg (netcore)
XML_JSon2.jpg
XML_JSon3.jpg
MS Office The project show you, how one can save data in Excel or in Winword.
It show, how to create a equation in Excel.
It show, how to create a table In Winword. 		Office.zip
Office1.jpg
Office2.jpg
Office3.jpg
Office4.jpg
Java IDE The project show show to create a small Eclipse-Version. Video_JavaIDE.zip
Video_JavaIDE1.jpg
Video_JavaIDE2.jpg
Video_JavaIDE3.jpg

Java-IDE-Teil1.mp4
Java-IDE-Teil2.mp4
Java-IDE-Teil3.mp4
RibbonControl This project show a sampls of the ribboncontrol. RibbonControl.zip
RibbonControl1.jpg
RibbonControl2.jpg
RibbonControl3.jpg
RibbonControl4.jpg
RibbonControl5.jpg
AccessDBConsole1 Here is a DBConsole with Access.
The UI are with a RibbonControl.
With the mousewheell you can changed the fontsize.
The RibbonControl are not changed with the fontsize. 		Video_DBKonsole_Accces.zip
Video_DBKonsole_Acccest1.jpg
Video_DBKonsole_Acccest2.jpg

DBConsole-Teil1.mp4
DBConsole-Teil2.mp4
AccessDBConsole2 Here is a DBConsole with Access.
The UI are with a normal UI-Elements.
With the mousewheell you can changed the fontsize.
In this project changed also the icons. 		Video_DBKonsole_Access_Normal.zip
Video_DBKonsole_Access_Normal1.jpg


DBConsole-Teil1.mp4
DBConsole-Teil2.mp4
Firebird Konsole Here is a DBConsole with Firebird.
The UI are with a normal UI-Elements.
With the mousewheell you can changed the fontsize.
In this project changed also the icons. 		FBKonsoleNormal.zip
FBKonsoleNormal1.jpg

DBConsole-Teil1.mp4
DBConsole-Teil2.mp4
SQLite Console Here is a DBConsole with Firebird.
The UI are with a normal UI-Elements.
With the mousewheell you can changed the fontsize.
In this project changed also the icons. 		DBConsoleSQLite.zip
DBConsoleSQLite1.jpg

DBConsole-Teil1.mp4
DBConsole-Teil2.mp4
SyntaxHighlight The project use a Editor-UserControl to create an editor-application.
It has four syntax-group:
- java
- cs
- py
- hmtl,hml,htm,css,php

It has two colorarray:
- lightmode
- darkmode

Threa is no color-dialog. Show my html-IDE. 		Video_Syntaxhighlight.zip
Video_Syntaxhighlight-java.jpg
Video_Syntaxhighlight-cs.jpg
Video_Syntaxhighlight-php.jpg
Video_Syntaxhighlight-python.jpg

SyntaxHighlight.mp4


WebUpdate This project, better the three project, sow you, how you can create an web-update.
1. Project: Install_Main (the main-program)
2. Project: Install_SetWebVersion.exe (set the versionsnumber for the server)
3. Project: Install_WebInstaller.exe (load, unzip,copy)

Also it show, how to update a database. 		WebUpdate.zip

WebUpdate-InstallMain.jpg
WebUpdate-Install_SetWebVersion.jpg
WebUpdate-Install_WebInstaller.jpg

webUpdate.mp4
DATAGRID
DataGrid Access 1 This project show a datagrid applcation with:
- Access database
- Group and normal view
- Window with a treee
- Window with master/Details
- Export 2 Excel
- Export 2 Winword
- with a DBConsole
- with RibbonControl
- the update to the database are directly 		Video_DataGrid_Access1.zip
Video_DataGrid_Access1-Pict1.jpg
Video_DataGrid_Access1-Pict2.jpg
Video_DataGrid_Access1-Pict3.jpg
Video_DataGrid_Access1-Pict4.jpg

DataGrid-Teil1.mp4
DataGrid Access2 This project show a datagrid applcation with:
- Access database
- Group and normal view
- Window with a treee
- Window with master/Details
- Export 2 Excel
- Export 2 Winword
- with a DBConsole
- with RibbonControl
- the update to the database are NOT directly
- You can changed the values, but only after you close the window you get a questiion and save the changes. 		Video_DataGrid_Access2.zip
Video_DataGrid_Access2-Pict1.jpg
Video_DataGrid_Access2-Pict2.jpg
Video_DataGrid_Access2-Pict3.jpg
Video_DataGrid_Access2-Pict4.jpg

DataGrid-Teil2.mp4
DataGrid Firebird This project show a datagrid applcation with:
- Firebird database
- Group and normal view
- Window with a treee
- Window with master/Details
- Export 2 Excel
- Export 2 Winword
- with a DBConsole
- with RibbonControl
- the update to the database are NOT directly
- You can changed the values, but only after you close the window you get a questiion and save the changes. 		Video_DataGrid_Firebird.zip
Video_DataGrid_Firebird1.jpg
Video_DataGrid_Firebird2.jpg
Video_DataGrid_Firebird3.jpg
Video_DataGrid_Firebird4.jpg

DataGrid-Teil3.mp4
DataGrid SQLite This project show a datagrid applcation with:
- SQLite database
- Group and normal view
- Window with a treee
- Window with master/Details
- Export 2 Excel
- Export 2 Winword
- with a DBConsole
- with RibbonControl
- the update to the database are NOT directly
- You can changed the values, but only after you close the window you get a questiion and save the changes. 		Video_DataGrid_SQLite.zip
Video_DataGrid_SQLite1.jpg
Video_DataGrid_SQLite2.jpg
Video_DataGrid_SQLite3.jpg
Video_DataGrid_SQLite4.jpg

DataGrid-Teil4.mp4

Vorteile von WPF

Scripte

Kapitel Script (Eine Folie pro Seite)
(Powerpoint) 		Script (Zwei Folien pro Seite)
(Powerpoint) 		PDF-Datei (WinWord)
Einleitung Einleitung.pdf Einleitung-2.pdf SdkXamlBrowser.exe
SdkXamlBrowser.zip
Layout Layout.pdf Layout-2.pdf Bild1.jpg
Bild2.jpg
Bild3.jpg

Beispiele in der Vorlesung:
 beispiele_vorl.7z

Vorgefertigte Beispiele in der Vorlesung:
 uebungen_vorl.7z

Sprache C# Sprache.pdf Sprache-2.pdf
Dialog dialog.pdf dialog-2.pdf splitter.txt

ueb31.txt
Grafik grafik.pdf grafik-2.pdf grafik-2.pdf

CAD-Beispiel:
 CAD_Loesung.7z
Office1 office.pdf office-2.pdf
Threads thread.pdf thread-2.pdf bsp_threads.7z
DataBinding databinding.pdf databinding-2.pdf
Datenbanken database.pdf database-2.pdf

Lösungen einiger C# Probleme

Stichworte Problem Lösung
Tab´s in Editoren Tab´s in Editoren freischalten TextBox:
editor.AcceptsReturn = true;
editor.AcceptsTab = true;
editor.Multiline = true;
editor.ScrollBars = System.Windows.Forms.ScrollBars.Both;
editor.TabStop = false;
editor.WordWrap = false;
editor.MaxLength = 327670;

RichTextBox:
richTextBox1.AcceptsTab = true;
richTextBox1.Multiline = true;
richTextBox1.TabStop = false;
richTextBox1.WordWrap = false;
richTextBox1.MaxLength = 327670;
Konvertierung String nach Double
Convert
ToDouble 		Folgende Zahl x1 wird falsch konvertiert:
Die Zahl x2 wird richtig konvertiert

double x1, x2;
String sStr1 = "123.456";
String sStr2 = "123,456";
x1 = Convert.ToDouble(sStr1);
x2 = Convert.ToDouble(sStr2);

Ursache: .net nimmt immer den Dezimaltrenner aus der Systemeinstellung
 double x1, x2;
String sStr1 = "123.456";
String sStr2 = "123,456";
x1 = Convert.ToDouble(sStr1, System.Globalization.CultureInfo.InvariantCulture);
x2 = Convert.ToDouble(sStr2, System.Globalization.CultureInfo.InvariantCulture);
if (double.TryParse(textBox1.Text, System.Globalization.
NumberStyles.AllowDecimalPoint, System.Globalization.CultureInfo.InvariantCulture, out value1) {
}

bei negativen Zahlen, speziell decimal:

if (double.TryParse(textBox1.Text, System.Globalization.
NumberStyles.AllowDecimalPoint | System.Globalization.NumberStyles.AllowLeadingSign, System.Globalization.CultureInfo.InvariantCulture,
out value1) {
}
Konvertierung von Double nach String
ToString 		Das Problem ist, das man den Punkt angibt, trotzdem ein Kommagesetzt wird (In Germany) Double d = 10.45678;
string sd = d.ToString("##0.############");
Liefert 10,45678
string sd = d.ToString("##0.############", System.Globalization.CultureInfo.InvariantCulture);
Liefert 10.45678
Hex nach int Eine hexadezimale Zahl in einem Int umwandeln int value = 0;
String input = "0x21"; // Eingangswert
String sHex = input.Substring(2); // 0x abschneiden
if (int.TryParse(sHex,System.Globalization.NumberStyles.HexNumber,
__System.Globalization.CultureInfo.InvariantCulture, out value)) {
____cell.ToolTipText = value.ToString();
}
instanceof instance heisst in C# is, sonst ändert sich nix Beispiel: test_is.cs

CQuadrat q1 = new CQuadrat(5);
CRechteck r1 = new CRechteck(5, 3);
Object obj = q1;
if (obj is CQuadrat)
{
CQuadrat q = (CQuadrat)obj;
}
super super heisst in C# this, sonst ändert sich nix public student() : this(0)
{
}

public student(int Matrnr)
{
m_Matrnr = Matrnr;
}
Start
Run
Execute
Aufruf 		Start eines Programms
einer E-Mail-Adresse
einer HTML-Seite 		using System.Diagnostics; // run

Process Prog = new Process();
Prog.StartInfo.FileName = "mailto:mwilhelm@hs-harz.de";
Prog.StartInfo.Arguments = "";
Prog.Start();
Prog.Close();

Process Prog = new Process();
Prog.StartInfo.FileName = "http://mwilhelm.hs-harz.de";
Prog.StartInfo.Arguments = "";
Prog.Start();
Prog.Close();

Process Prog = new Process();
Prog.StartInfo.FileName = "notepad.exe";
Prog.StartInfo.Arguments = "C:\\Daten\\test.txt";
Prog.Start();
Prog.Close();
Process Prog = new Process();
Prog.StartInfo.FileName = "myprogram.exe";
Prog.StartInfo.Arguments = "C:\\Daten\\test.txt";
Prog.Start();
Prog.WaitForExit(); // wait for the process
Prog.Close();
Start
Run
Execute
Aufruf
pipe stream 		Run a program and read the output.
Then you can show the errortext in a window. 		String exeFile = @"c:\gcc-bsp\test.exe";
String compiler = @"c:\gcc\gcc.exe";
if (File.Exists(exeFile)) {
__File.Delete(exeFile);
}
Process prog = new Process();
prog.StartInfo.UseShellExecute = false;
//prog.StartInfo.RedirectStandardOutput = true;
prog.StartInfo.RedirectStandardError = true;
prog.StartInfo.FileName = compiler;
prog.StartInfo.Arguments = @"c:\gcc-bsp\test.c" + " -o " + exeFile;
prog.StartInfo.WorkingDirectory = @"c:\gcc\";
prog.Start();
//String errortext1 = prog.StandardOutput.ReadToEnd();
String errortext2 = prog.StandardError.ReadToEnd();
prog.WaitForExit(); // wait for the process
prog.Close();
if (File.Exists(exeFile)) {
__Process prog2 = new Process();
__prog2.StartInfo.FileName = exeFile;
__prog2.StartInfo.Arguments = "";
__prog2.StartInfo.WorkingDirectory = Basis.getPath(exeFile);
__prog2.Start();
__prog2.Close();
}
else {
__WError dialog = new WError(this, errortext2);
__dialog.Show();
}
Popupmenu, Contextmenu
Mouse click
Dynamisch erstellte Elemente 		Wie kann man bei mehreren automatisch erstellten Schaltern / Bilder / Componenten ein Popupmenü an der richtigen Stelle aufrufen Form1.cs
Krocker.exe
krocker.zip



Random
Zufallszahlen 		Erzeugen verschiedener Zufallszahlen Random rand = new Random();
int initValue = 10;
Random rand = new Random(initValue);
for (int j = 0; j < 6; j++)
Console.Writeline(" {0,10} ", rand.Next(0,10));

rand.Next(von,bis)
toString
Format 		Ausgabe eines Double-Wertes mittels der Methode toString double x=1234.567;
Edit.Text = x.ToString("#.##"); 1234,57
Edit.Text = x.ToString("00000"); 01235 (Rundung)
Edit.Text = x.ToString("#"); 1235 (Rundung)
Edit.Text = x.ToString("#,###"); 1.235 (Rundung, Tausender-Trennung)
Edit.Text = x.ToString("#.##E+00"); 1.23E+03 (Rundung)
GroupBox
Button
Checked
UnChecked
RadioButton 		In einer ToolStrip-Leiste sollen Schalter sich gegenseitig ausschalten, à la RadioButton // Gemeinsame Methode zum Löschen aller Schalter
// dann setzen EINES Schalters
private void setToolBarButtons(ToolStripButton BnActive)
{
Bn1.CheckState = System.Windows.Forms.CheckState.Unchecked;
Bn2.CheckState = System.Windows.Forms.CheckState.Unchecked;
BnActive.CheckState = System.Windows.Forms.CheckState.Checked;
}
private void Bn1_Click(object sender, EventArgs e)
{
setToolBarButtons(Bn1);
}

private void Bn2_Click(object sender, EventArgs e)
{
setToolBarButtons(Bn2);
}
Clipboard
setzen
holen 		Zugriff auf die Zwischenablage setzen:
Clipboard.SetDataObject("hier ein Text");

holen:
sStr = (string) ClipBoard.GetDataObject( typeof(string) );
OpenDialog OpenDialog mit Startverzeichnis setzen openFileDialog1.InitialDirectory = System.Environment.CurrentDirectory;
ColorDialog ColorDialog setzen, starten und die Farbe erhalten ColorDialog coldialog = new ColorDialog();
coldialog.FullOpen = true;
coldialog.Color=PanelColor.BackColor;
if (coldialog.ShowDialog() == DialogResult.OK)
{
PanelColor.BackColor = coldialog.Color;
}
foreach TabPages Iteration über alle TabPages TextBox Editor2;
int i=0;
foreach (TabPage page in MainTab.TabPages)
{
i++;
Editor2 = (TextBox)page.GetNextControl(page,true);
Editor2.text = "Editor: "+i;
}
TreeNode im TreeView setzen Wie kann man einen Knoten im TreeView setzen? chkTree.SelectedNode = node ((c) by Beck)
MVC-Modell Fertiges Beispiel eines MDI-Programms mit selbst-erstelltem MVC-Modell. Verwendet wurde das Java-Modell mit Ableitung und Interface. Es kann also angepasst werden. mdi_mvc.7z
MDI-Fenster Bestimmen des aktiven Elementes private ChildForm getActiceForm() {
Form form = this.ActiveMdiChild;
if (form==null)
return null;
else
return (ChildForm) form;
}
System.Environment Wichtige Elemente aus System.Environment System.Environment.CommandLine
System.Environment.CurrentDirectory
System.Environment.GetCommandLineArgs als String
System.Environment.GetEnvironmentVariables
System.Environment.GetLogicalDrives
System.Environment.GetFolderPath
System.Environment.MachineName
System.Environment.OSVersion
System.Environment.SpecialFolder
System.Environment.SystemDirectory
System.Environment.UserName
System.Environment.ProcessorCount

Anwendung:
String path= Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
path = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
path.Replace("Desktop", "Downloads");
String[] args = System.Environment.GetCommandLineArgs();
for (int i = 1; i < args.Length; i++) {
__String file = args[i];
__if (File.Exists(file)) {
// now load
__}
}
Explorer Bestimmen der Laufwerke
Bestimmen der Verzeichnisse
Bestimmen der Dateien 		String[] lws = System.Environment.GetLogicalDrives();
foreach (String lw in lws) {
node = new TreeNode(lw, 3, 4);
root.Nodes.Add(node);
// Abfrage, ob CD eingelegt ?
if (Directory.Exists(lw)) {
string[] subdir = Directory.GetDirectories(lw);
string[] files = Directory.GetFiles(lw);
foreach (String file in files)
{
FileAttributes fileAttributes = File.GetAttributes(file);
bool isReadOnly = (fileAttributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly;
}
} // if
} // foreach (String lw in lws)
Einlesen von Text Welche Codierungen sind beim Einlesen möglich?
(Encoding) 		String[] lines = File.ReadAllLines(filename, Encoding.GetEncoding(850));
String[] lines = File.ReadAllText(filename, System.Text.Encoding.ASCII);
System.Text.Encoding.ASCII
System.Text.Encoding.BigEndianUnicode
System.Text.Encoding.Unicode
System.Text.Encoding.UTF32
System.Text.Encoding.UTF7 // Delphi, DOS-Texte
System.Text.Encoding.UTF8
Encoding.GetEncoding( 850): // Convert OemToChar
Encoding.GetEncoding( 437):
Kopieren und Ausschneiden à Explorer Wie kann man die Shell-Copy/Paste-Funktionen einbinden Beispiel:
FileOperationAPIWrapper.txt
Lesen oder Schreiben eines Delphi-Records in C# Definition eines Record in C# Man verwendet eine struct mit pack=1
Die festen Strings in Delphi können über ein Längenbyte und ein Array erfasst werden.
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto, Pack = 1)]
private struct MyRecord {
public int hwnd;
public double size;
public bool gender;
public byte stringlaenge;
public char[] name;

// Arrays werden mit einem Konstruktor initialisert
public MyRecord(int anz) {
hwnd = 0;
size = 0;
gender = true;
stringlaenge = 0;
name = new char[anz];
}
}
IBAN-Rechner Ermitteln der IBan-Nummer iban.txt
dateierweiterung betriebssystem zuweisung programm
fileextention operationssystem program 		Zuweisen einer Dateierweiterung zu einem Programm string ext = ".grf";
string title = "Grafikprogramm";
string extdescription = "Ein Grafikprogramm";
FileRegistrationHelper.SetFileAssociation(@"D:\CAD\CAD.exe", ext, title + "." + extdescription);

FileRegistrationHelper.txt
recursive filecopy without SHFILEOPSTRUCT How can I copy files and directories without the Windows filecopy DLL? Source-code:
DirectoryCopy.txt

Project:
DirectoryCopy.zip

Image:
DirectoryCopy.png
C# tempfile How can I get a tempfile? public static String getTempFile() {
__return System.IO.Path.GetTempFileName();
}

Problems and solutions in WPF

Keywords Description Beschreibung Solution
WPF, Color, brush How to set a color with code behind? Wie setzt man eine Hintergrundfarbe mittels C#? byte red=255;
byte green=255;
byte blue=0;
byte tranz=0;
tTestBox.Foreground = new SolidColorBrush( Color.FromArgb(tranz, red, green, blue) );
tTestBox.Foreground = new SolidColorBrush( Color.Fromrgb(red, green, blue) );
WPF, OpenDialog, InitialDirectory Openfiledialog with filter OpenDialog mit Startverzeichnis setzen using Microsoft.Win32;// opendialog
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = System.Environment.CurrentDirectory;

Complete Examples: opendialog.txt
WPF, DrawText, Vertical Using Drawtext in OnRender with horizontal and vertical Wie benutzt man DrawText in OnRender mit vertikaler und horizontaler Ausrichtung int x = 100;
int y = 100;
formattedText = new FormattedText(text.Text,
CultureInfo.GetCultureInfo("DE-de"),
FlowDirection.LeftToRight,
new Typeface("Verdana"),
24, Brushes.Red);

// important angle with x and y
int angle=-90;
RotateTransform RT = new RotateTransform(angle, x, y);
dc.PushTransform(RT);
dc.DrawText(formattedText, new Point(x, y));
dc.Pop();

Complete Examples: drawText.txt
WPF, Colordialog In WPF, there is no colordialog.
Use this colordialog. It is modal and you can select a color with alpha-value 		Den Colordialog gibt es in WPF nicht. Also Nachprogrammieren und einsetzen.
Oder man benutzt den WinForms-Color-Dialog. 		Execute:
ColorDialog dialog = new ColorDialog();
dialog.setColor(colorLine);
dialog.ShowDialog();
if (dialog.Retcode)
{
colorLine = Color.FromArgb(dialog.Alpha, dialog.Red, dialog.Green, dialog.Blue);
bnLineColor.Background = new SolidColorBrush(colorLine);
}

Complete Examples: colordialog.txt

Image: colordialog.png
WPF, Grid row hidden
row collapse 		set the height of a row in a grid to zero Um eine Zeile zu löschen, setzt man die Zeile auf die Höhe null. XAML:
<Grid x:Name="grid" >

CS:
public void setRow3Visible(bool visible) {
__if (visible) {
__grid.RowDefinitions[3].Height = new GridLength(0);
_}
_else {
__grid.RowDefinitions[3].Height = new GridLength(1, GridUnitType.Star);
_}
}
WPF, Spliterdialog à la Explorer
vertical Spliter 		A Template with a Grid and a GridSplitter to simulate an Explorerdialog
without any Buttons and any menues 		Ein Template mit einem Grid und einem GridSplitter, um ein Explorerdialog zu simulieren
pures Grid 		Image: splitter1.png

Complete Examples: SplitContainer1.7z
Sample:
<GridSplitter Name="splitterline"
Grid.Column="0" Grid.Row="0" Width="3"
Background="Red" />
Tip:
No extra column
WPF, Spliterdialog à la Explorer
vertical Spliter 		A Template with a Grid and a GridSplitter to simulate an Explorerdialog
with some Buttons and somemenues.
It shows the Communication from Commands between Menues and Buttons 		Ein Template mit einem Grid und einem GridSplitter, um ein Explorerdialog zu simulieren
Beinhaltet auch Menüs und Schalter. Es zeigt, wie die Kommunikation zwischen Menüs und Schaltern funktioniert (Commands) 		Image: splitter2.png

Complete Examples: SplitContainer2.7z
Sample:
<GridSplitter Name="splitterline"
Grid.Column="0" Grid.Row="0" Width="3"
Background="Red" />
Tip:
No extra column
WPF, Horizontaler Splitter An horozontal splitter is easy to create with a grid. But one must give the splitter an separate cell/row. Ein horizontaler Splitter ist recht einfach mit einem Grid zu erstellen. Aber man muss den Splitter eine eigene Reihe geben. Sample:
<GridSplitter Name="gridsplitter"
Grid.Column="0" Grid.Row="1" Background="Red" Height="4" HorizontalAlignment="Stretch" />
Tip:
One need a new column for the splitter
WPF, vertical Splitter Position How can I get and set the width of a splitter? Wie kann man die Breite eines Splitter holen und setzen? get:
ColumnDefinitionCollection cols = grid.ColumnDefinitions;
double w = cols[0].ActualWidth;
WriteRegistryInt(C_REG_ADR, "Splitterwidth", w);

set:
int w = ReadRegistryInt(C_REG_ADR, "splitterWidth");
if (w>50 && w<1000) {
ColumnDefinitionCollection cols = grid.ColumnDefinitions;
cols[0].Width = new GridLength(w);
}
WPF, horizontaler Splitter Position How can I get and set the height of a splitter? Wie kann man die Höhe eines Splitter holen und setzen? get:
RowDefinitionCollection rows = splitContainer1.RowDefinitions;
int h = (int)rows[1].ActualHeight;
WriteRegistryInt(C_REG_ADR, "Splitterheight", h);

set:
int h = ReadRegistryInt(C_REG_ADR, "Splitterheight");
if (h>20 && h<700) {
RowDefinitionCollection rows = splitContainer1.RowDefinitions;
rows[1].Height = new GridLength(h);
}
WPF, Label, Border How can I get a label with a border? Wie kann man ein Label mit einem Rand (Strich umranden)? <Border CornerRadius="1" BorderBrush="Gray" BorderThickness="2" Margin="5">
__<Label Content="Daten verwalten" Foreground="Blue" />
</Border>
WPF, Buttons, Image How can I get a button with an image? Wie erhält man einen Schalter mit ein Bild? <Button Grid.Column="7" Grid.Row="0" Name="bnFirst" Margin="20 0 0 0" ToolTip="Ersten Datensatz anzeigen" IsTabStop="False" Height="25" Width="25" Click="bnFirst_Click">
_<Image Source="/IGMStart;component/Images/first.png" Height="23" Width="23" />
</Button>
WPF, Buttons, Label, Image How can I get a button with a label and an image? Wie erhält man einen Schalter mit einem Label und einem Bild? <Button Grid.Column="7" Grid.Row="0" Name="bnStart" Margin="20 0 0 0" IsTabStop="False" Height="25" Width="25" Click="bnStart_Click">
_<StackPanel>
___<Image Source="/IGMStart;component/Images/start.png" Height="23" Width="23" />
___<Label Content="Starten der Prüfung" />
_</StackPanel>
</Button>
WPF,
ListView
edit items 		How edit a listview/gridview row ? Wie kann man in einer ListView eine Zeile, ein Objekt editeren? MyClass cl;
int i = listView1.SelectedIndex;
if (i >= 0)
{
cl = (MyClass)listView1.Items[i];
// Dialog
cl.attribut="new Value";
listView1.Items[i] = cl;
listView1.Items.Refresh();
}
WPF,
ListView
DoubleClick 		How can one implement a double-Click-Event in a listView ? Wie kann man einen Double-Click-Event in eier ListView realisieren? private void Window_Loaded(object sender, RoutedEventArgs e)
{
listView1.AddHandler(Control.MouseDoubleClickEvent, new RoutedEventHandler(HandleDoubleClick));
}
protected void HandleDoubleClick(object sender, RoutedEventArgs e)
{
mnEdit_Click(sender, e);
}

private void mnEdit_Click(object sender, RoutedEventArgs e)
{
// see also previous row
}
WPF tree selecteditem select node show selected node How can I select a node and show the node in the tree? Wie kann ich einen Knoten markieren und anzeigen? // selected treenode:
tree.SelectedValuePath="root\abc\cde\edf";
TreeViewItem node = tree.selectedValue;
node.IsSelected = true;
node.BringIntoView();
tree.Focus();
WPF,
DockPanel with C# 		How can I create a DockPanel and insert GUI-Elements? Wie kann man einen DockPanel erzeugen und Elemente einfügen? Label label1 = new Label();
Label label2 = new Label();
TextBox editor = new TextBox();

WrapPanel wrapPanel = new WrapPanel();
wrapPanel.HorizontalAlignment = HorizontalAlignment.Center;
wrapPanel.Children.Add( label1 );
wrapPanel.Children.Add( label2 );

DockPanel dockpanel = new DockPanel();
dockpanel.LastChildFill = true;
// Important
DockPanel.SetDock(wrapPanel, Dock.Bottom);
DockPanel.SetDock(editor, Dock.Top);
dockpanel.Children.Add(flowLayoutPanel1);
dockpanel.Children.Add(editor);
WPF,
TextBox
row column 		how can one get the actual row and column? Wie kann man die aktuelle Zeile und Spalte erhalten? TextBox editor;
int charIndex = editor.CaretIndex;
int lineindex = (editor.GetLineIndexFromCharacterIndex(charIndex) + 1);
int index_aktLine = editor.GetCharacterIndexFromLineIndex(lineindex - 1);
lRowNr.Content = "Zl: " + lineindex;
int columnCount = editor.SelectionStart - index_aktLine + 1;
lColumnNr.Content = "Sp: " + columnCount;
WPF,
Label
underline is not visible 		in a String ist an underline "_".
The Label delete this.
What can I do? 		Ein Label-Element löscht ein Underline "_".
Abhilfe? 		Label lDatei;
String sValue="bsp_001.txt";
lDatei.Content = sValue.Replace("_","__");
WPF Label Textbox Checkbox Radiobutton Margin Code behind How can I set a margin with code behind? Wie kann ich einen Rand in C# setzen? CheckBox chk = new CheckBox();
Thickness margin = chk.Margin;
margin.Left = margin.Top = margin.Bottom = margin.Right = 5;
chk.Margin = margin;
WPF,
TextBlock 		How can I create a TextBlock in XAML? Wie gebe ich einen TextBlock in XAML ein? <TextBlock>
__Hello! I am a TextBlock.
__<LineBreak />
__Hello! I am a TextBlock.
__<LineBreak />
</TextBlock>
WPF,
TextBlock 		How can I create a TextBlock in XAML with "Tabs" ? Wie gebe ich einen TextBlock mit Einrückungen in XAML ein? <TextBlock>
__<Run FontWeight="Bold" FontSize="14" Text="Ablauf:" />
__<LineBreak />
__<Run FontStyle="Italic" FontSize="12" Text=" • Installieren der Dos-Box" />
__<LineBreak />
__<Run TextDecorations="Underline" FontSize="12" Text=" • Anlegen eines Verzeichnisses (jeweils maximal 8 Buchstaben)" />
__<LineBreak />
__<Run FontSize="12" Text=" o Beispielsweise: D:\asm" />
__<LineBreak />
</TextBlock>
WPF,
TextBlock,
Line break 		How can I create a line break? Wie erzeuge ich einen Zeilenumbruch? <LineBreak />
WPF,
TextBlock,
Code behind 		How can I create a TextBlock mit C#? Wie erzeuge ich mit C# einen TextBlock? TextBlock txtBlock = new TextBlock();
txtBlock.Height = 30;
txtBlock.Width = 250;
txtBlock.Text = "I'm a TextBlock";
txtBlock.Foreground = new SolidColorBrush(Colors.Blue);
myContainer.Children.Add(txtBlock);
WPF,
TextBox,
remove Undo 		How can I delete/remove the undo-Stack in a TextBox? Wi ekann ich den Undo-Stack löschen bzw. entfernen? You implement a loop:
while (editor.Undo()) {
}
WPF,
ListCheckBox 		In Winforms exists a ListCheckBox.
Now in WPF also 		In Winforms gibt es eine ListCheckBox.
Nun auch in WPF. 		ListCheckBox:
Image: ListCheckBox1.jpg
Quellcode: ListCheckBox1.txt

Projekt-Quellcode: ListCheckBox1.zip
WPF,
ListCheckBox 		In Winforms exists a ListCheckBox.
Now in WPF also
This example put the selected items in a second Listbox .
This is also possible for RadionButtons !! 		In Winforms gibt es eine ListCheckBox.
Nun auch in WPF.
Dieses Beispiel kopiert die markierten Elemente in eine rechte zusätzliche Listbox. Damit erhält man eine bessere Übersicht. 		ListCheckBox:
Bild: ListCheckBox2.jpg
Quellcode: ListCheckBox2.txt

Projekt-Quellcode: ListCheckBox2.txt
WPF,
Timer 		how can one used a Timer? Wie kann man einen Timer realisieren? using System.Windows.Threading; // Timer

private void Window_Loaded(object sender, RoutedEventArgs e)
{
DispatcherTimer dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
dispatcherTimer.Interval = new TimeSpan(0, 0, 1); // hour, min, sec
// minmal one second, no millisecond
/// with "FromMilliseconds" one can set millisecond
dispatcherTimer.Interval = TimeSpan.FromMilliseconds(250);
dispatcherTimer.Start();
} // window_Loaded

private void dispatcherTimer_Tick(object sender, EventArgs e)
{
// action
CommandManager.InvalidateRequerySuggested();
}
WPF
DataGrid
Columnwidth
C# 		How can I change the Column in a grid with C#? Wie kann man eine Spalte in einem Grid mit C# ändern? <Grid Name="grid1" DockPanel.Dock="Top" >
</Grid>
ColumnDefinitionCollection cols = grid1.ColumnDefinitions;
GridLength gl1;
gl1 = new GridLength(200);
cols[0].Width = gl1;
WPF
DataGrid
Columnwidth
C# 		How can I change the Column in a grid with C#? Wie kann man eine Spalte in einem Grid mit C# ändern? datagrid.Columns[0].Width = 80;
datagrid.Columns[1].Width = 100;
WPF DataGrid
select a row 		how can I scoll the datagrid rows? wie kann ich eine Zeile in einem Datagrid ansteuern? 1) Change the selectedIndex
2) scroll to View
3) Focus setzen

Prev-Event:
datagrid.SelectedIndex = datagrid.SelectedIndex - 1;
datagrid.ScrollIntoView(datagrid.SelectedItem);
datagrid.Focus();
navigatorbar_datagrid.txt
WPF Datagrid background cell how can I set the background of a cell ? wie kann ich den Background einer Spalte/Zelle setzen ? Image:
 DatagridBackground.png

DatagridBackground_MainWindow_xaml.txt
DatagridBackground_MainWindow_cs.txt
DatagridBackground_Model_Color.txt
DatagridBackground_MyBkColorConverter1.txt
DatagridBackground_MyBkColorConverter2.txt

Project:
DatagridBackground.zip
WPF
CardControl 		How can I create a CardLayout à la Java? Wie kann man einen Cardlayout à la Java erstellen?
Die Elemente liegen alle übereinander. 		Solution:
1) create a TabControl
2) Insert the GUI-Elements
3) Set the Height to Zero
4) Delete Focus for the TabItem

foreach (TabItem tabitem in tabControl1.Items) {
tabitem.Height = 0;
tabitem.Focusable = false;
}

Beispielprojekt:
 CardLayout.zip
WPF
TabControl mit CloseButton 		How can I create a TabControl mit a CloseButton in every TabItem? Wie erhalte ich einen Schalter in jedem TabItem eines TabControls? Ablauf:
Ableiten eines TabItems: MyTabItem
Erzeugen eines UserControls
Interface für das Schließen
Interface in main implementieren
Beim Erzeugen MyTabItem verwenden

Beispielprojekt:
 TabControl_CloseButton.zip

Bild:
TabControl_CloseButton.jpg
WPF
TabControl
ListView 		How can I create a ListView complete with C#?
How can I add Events:
SelectionChange
DoubleClick
HeaderClick (sort) 		Wie kann man eine ListView komplett mit C# programmieren?
Wie kann man Events hinzufügen:
SelectionChange
DoubleClick
HeaderClick (sort) 		ListView mit TabControl
ListView komplett mit C#
TabControl mit Schalter zum Beenden
Quellcode: TabControl_ListView.zip
WPF
GroupBox 		How can I create a GroupBox?
Also with an Image? 		Wie kann man eine GroupBox erstellen?
Im Header soll auch ein Bild sein! 		GroupBox1
Einfache GroupBox mit ComboBox
Projekt-Quellcode: GroupBox1.zip
GroupBox: GroupBox1.txt

GroupBox2
GroupBox mit ComboBox
Die Überschift ist eine Zusammenfassung Image mit Label
Projekt-Quellcode: GroupBox2.zip
GroupBox: GroupBox2.txt
WPF
FileWatcher 		How can I create a FileWatcher
with Code behind? 		Wie kann man manuell einen Filewatcher erzeugen? FileWatcher
Erstellen eines Filewatchers
Quellcode: filewatcher.txt
WPF:
set Cursor 		How can I set a Cursor Wait? Wie kann man einen Pausenkursor setzen? Mouse.OverrideCursor = Cursors.Wait;
try {
// Action
}
finally {
Mouse.OverrideCursor = null;
}
WPF webbrowser
local file 		How can I set a file to an webbrowser? Wie kann man einem Webbrowser eine lokale Datei zuweisen? webbrowser.Navigate("file:///" + filename );
WPF Usercontrol How can I insert a usercontrol? Wie kann ich ein Usercontrol einfügen? XAML:
1) Link to the Project "MyProject"
xmlns:local="clr-namespace:MyProject"

2) Insert the UI-Element
<local:MyUserControl x:Name="myuserControl" />
WPF Focus TextBox SelectAll What can I do, that with a tab the selected textbox ist fill selected? Was muss man Einfügen, um bei einem Tabwechsel die Ziel-TextBox selektiert zu haben? textbox_selectall
WPF selectDirectory
FolderBrowserDialog 		How can I select a directory? Wie kann man ein Verzeichnis auswählen ? // externer Verweis eintragen
// ProjektTree, Assemblies, Framework System.Windows.Forms
private void bnSelectDirectory_Click(object sender, RoutedEventArgs e) {
_System.Windows.Forms.FolderBrowserDialog dialog = new _System.Windows.Forms.FolderBrowserDialog();
_dialog.SelectedPath = System.Environment.CurrentDirectory;
_System.Windows.Forms.DialogResult result = dialog.ShowDialog();
_if (result == System.Windows.Forms.DialogResult.OK) {
___aktion(dialog.SelectedPath);
_}
}
WPF selectDirectory
FolderBrowserDialog 		How can I use a FolderBrowserDialog in WPF? Wie kann man ein FolderBrowserDialog, Auswahl eines Verzeichnisses, in WPF benutzen? the BEST way is to build an own Dialog:
Properties:
- save and restore the path in the registry
- select an initial folder
- show the selected node with node.BringIntoView()
- userdirs: docs, music, pictures, videos, desktop

Important:
The four pictures must be in the programmfolders of the program
Pictures:
FolderBrowser1.png
FolderBrowser2.png

Project:
 FolderBrowser.zip

WPF selectDirectory
FolderBrowserDialog 		How can I use a FolderBrowserDialog in WPF
AND show the files in the actual folder? 		Wie kann man ein FolderBrowserDialog, Auswahl eines Verzeichnisses, in WPF benutzen
und wie kann man Dateien rehts neben dem Baum anzeigen? 		the BEST way is to build an own Dialog:
Properties:
- save and restore the path in the registry
- select an initial folder
- show the selected node with node.BringIntoView()
- userdirs: docs, music, pictures, videos, desktop
- show the files in a listview

Important:
The four pictures must be in the programmfolders of the program
Pictures:
FolderBrowser1.png
FolderBrowser3.png

Project:
 FolderBrowser2.zip

WPF Popupmenu How can I create a ContextMenu or a popupmenu? Wie kann man ein ContextMenu oder ein Popupmenu erzeugen? Contextmenu
UAC
User Access Control 		I'm a user-admin, but my program has no rights.
How can I insert a UAC? 		As User-Admin one has not Admin-Control.
You must insert a User Access Control in your application.

Insert a UAC:
Menu "Project
-> Add new item
-> Application Manifest file" (app.manifest)

UAC1.png

there are three values:
- asInvoker
- requireAdministrator
- highestAvailable.

Change line 19 from "asInvoker" to "requireAdministrator".

app.mainfest.txt
WPF PrimaryScreen set top, left How can I get and set the postion of a window?
Especially with two screens. 		Wie kann man die Bildschirmposition des aktuellen Fensters speichern und restaurieren? In the attribs top, legt, width, height are the actual values.
With two or more screens windows set the coordinates.
But it can be negative (<0).
C# save the resolution of the screen in four values:
- VirtualScreenLeft
- VirtualScreenTop
- VirtualScreenWidth
- VirtualScreenHeight

Examples:
One screen with one width 1900 pixel:
One screen with one width 1000 pixel:
In one position you get:
- VirtualScreenLeft: 0
- VirtualScreenWidth: 2900

In other position you get:
- VirtualScreenLeft: -1900
- VirtualScreenWidth: 1000

In third position you can get:
- VirtualScreenLeft: -1000
- VirtualScreenWidth: 1900

So you save the position in the registry and compare the values with the four VirtualScreen-Values
source

Office and Excel

Keywords Description Beschreibung Solution
WPF
Office-Anbindung 		How can I control Office Wie kann man Winword, Excel etc. ansteuern? Office1
Ansteuerung von Word, Excel, Excel-Formel
Projekt-Quellcode: Office1.zip
GroupBox: Office1.txt
WPF
Excel
export
slow 		The Export to Excel is VERY slow.
How can I get it more efficient? 		Der Export nach Excel ist sehr langsam.
Wie kann man den Export beschleunigen? 		1. solution:
Export every cell
Time: 158 sec
2. solution:
Export every row
Time: 53 sec
3. solution:
Export every a block of cells and rows
Time: 3 to 7 sec
BIFF solution:
Time: 0,04 sec

ExcelSpeed.zip

Quellcode



WPF
Excel
export
slow 		The Export to Excel is VERY slow.
How can I get it more efficient? 		Der Export nach Excel ist sehr langsam.
Wie kann man den Export beschleunigen? 		Complete Project with ProgressBar
1. solution:
Export every cell
Time: 91 sec
2. solution:
Export every row
Time: 16 sec
3. solution:
Export every a block of cells and rows
Time: 2,2 sec
BIFF solution:
Time: 0,01 sec

Excel123.zip

excel123.png


RibbonControl

TabControl mit CloseButton

Keywords Description Beschreibung Solution
WPF
TabControl mit CloseButton 		How can I create a TabControl mit a CloseButton in every TabItem? Wie erhalte ich einen Schalter in jedem TabItem eines TabControls? Ablauf:
Ableiten eines TabItems: MyTabItem
Erzeugen eines UserControls
Interface für das Schließen
Interface in main implementieren
Beim Erzeugen MyTabItem verwenden

Beispielprojekt:
 TabControl_CloseButton.zip

Bild:
TabControl_CloseButton.jpg

TabControl mit CloseButton

WPF
TabControl mit CloseButton

Descroption:
How can I create a TabControl mit a CloseButton in every TabItem?

Beschreibung:
Wie erhalte ich einen Schalter in jedem TabItem eines TabControls?

Ablauf:
Ableiten eines TabItems: MyTabItem
Erzeugen eines UserControls
Interface für das Schließen
Interface in main implementieren
Beim Erzeugen MyTabItem verwenden

Beispielprojekt:
 TabControl_CloseButton.zip

Bild:
TabControl_CloseButton.jpg

Progressbar: invokelater

Keywords Description Beschreibung Solution
wpf progressbar thread backgroundworker How can I show a progressbar with a backgroundworker?
A progressbar with a thread are not working! 		Wie kann ich eine Progressbar mit einen backgroundworker verknüpfen?
Ein Progressbar funktioniert NICHT gut mit einem Tread!
Am besten ist ein backgroundworker. 		1) XAML: insert a progressbar
2) CS: declare a global variable of a BackgroundWorker
3) CS: worker_ProgressChanged(object sender, ProgressChangedEventArgs e) { ...}
4) CS: void dotheWork(object sender, DoWorkEventArgs e) { ...}
progressbar1.txt

Image: progressbar1.png
Projekt: ProgressBar1.zip

WPF und Charts

Charts a relativ simple to use.

Chartarten:
- Lines
- Bar (only horizontal!!!)
- Columns (only vertikal)
- Pie (Kuchen)
- Bubbles
- Area
- Scatter (Points)

Installation:
1) Download the library:
http://wpf.codeplex.com/releases/view/40535
Result: WPFToolkit.msi

2) Insert the DLL into the project:
1) View Projektmappen-Explorer:
Visual Studio 10
Item Verweise
Menuitem: Verweis hinzufügen
Register .NET
To sort by "Component name"
Find: "System.Windows.Controls.DataVisualization.Toolkit

Visual Studio 12
-References
-Add Reference
-Assemblies
- Extensions

Sort by "Name"
Find: "System.Windows.Controls.DataVisualization.ToolkitWhich files need my customer?
1) the exe-file
2) System.Windows.Controls.DataVisualization.Toolkit.dll
3) WPFToolkit.dll

All programms: chart-exe.zip

Chart-Samples und Problems

Keywords Description Beschreibung Solution
chart wpf liniseries How to create a chart with lineSeries? Wie erzeuge ich ein Linien-Diagramm? 1) XAML: create a chart
2) CS: add a LinesSeries to the chart
LinesSeries1.txt

Image: chart_linie1.png
Projekt: Chart_Linien1.zip
chart wpf liniseries How to create a chart with two lineSeries? Wie erzeuge ich ein zwei Linien-Diagramme? 1) XAML: create a chart with tow LinesSeries
2) CS: add two LinesSeries to the chart
LinesSeries2.txt

Image: chart_linie2.png
Projekt: Chart_Linien2.zip
chart wpf Dash Lines How to create a dashedLine Style? Wie erstellt man eine gestrichelte Linie? 1) local Variable
LineSeries ls2 = ((LineSeries)mcChart.Series[1]);

2) set the style
ls2.PolylineStyle = GetDashedLineStyle();

3) create the style
Style GetDashedLineStyle() {
_var style = new Style(typeof(Polyline));
_style.Setters.Add(new Setter(Shape.StrokeDashArrayProperty,_
_new DoubleCollection(new[] { 15.0, 5.0 })));
_return style;
}

I don't know, how to set a colour.
chart wpf clipboard How can I copy a chart to the clipboard? Wie bekomme ich die Zeichnung in die Zwischenablage? Chart2Clipboard.txt
chart wpf pie How can I create a chart of pieseries? Wie erzeuge ich ein Kuchendiagramm? 1) XAML: create a chart
2) CS: add a PieSeries to the chart
PieSeries1.txt

Image: chart_pie1.png
Projekt: Chart_Kuchen1.zip
chart wpf bar horizontal How can I create a horizontal bar? Wie erzeuge ich horizontale Bars? 1) XAML: create a chart
2) CS: add a BarSeries to the chart
BarSeries1.txt

Image: chart_bars1.png

Projekt: Chart_Bars1.zip
chart wpf bar vertical
columns 		How can I create one vertical bars? Wie erzeuge ich eine Grafik mit vertikalen Bars? 1) XAML: create a chart
2) CS: one BarSeries to the chart
ColumnsSeries1.txt

Note:
If the x-coordinates a different, then the two bars shown sequentiell.
If the x-coordinates a identical, then the two bars shown with two bars-series.

Image: chart_columns1.png
Projekt: Chart_Column1.zip
chart wpf bar vertical
columns 		How can I create two vertical bars? Wie erzeuge ich zwei vertikale Bars-Serien? 1) XAML: create a chart
2) CS: add two BarSeries to the chart
ColumnsSeries2.txt

Note:
If the x-coordinates a different, then the two bars shown sequentiell.
If the x-coordinates a identical, then the two bars shown with two bars-series.

Image: chart_columns2.png

Projekt: Chart_Column2.zip
chart wpf bar vertical
columns 		How can I create two bars and the bars are together? Wie erzeuge ich zwei vertikale Bars, in dem die einzelnen Balken nebeneinander sind? 1) XAML: create a chart
2) CS: add two BarSeries to the chart
ColumnSeries3.txt

Note:
If the x-coordinates a different, then the two bars shown sequentiell.
If the x-coordinates a identical, then the two bars shown with two bars-series.

Image: chart_columns3.png

Projekt: Chart_Columns3.zip
chart wpf dynamic chart panel How can I create a dynamic chart in a panel? Wie erzeuge ich dynamische Diagramme in einem Panel? If you create a dynamic series and you try to insert the series into the chart, you receive an error.
The problem are some null-attribs. I don't solve the problem, but I have a solution:

Solution:
1) Insert a DockPanel as a container for the chart.
2) Create an usercontrol named "UserChart"
3) In the action_method insert the chart
__UserChart userchart = new UserChart();
__userchart.mcChart.Title = "Titel";
__userchart.Background = Brushes.LightSkyBlue;
4) Next insert the series

ColumnSeries4.txt

Image: chart_columns4.png

Projekt: Chart_Columns4.zip
chart wpf chart dynamic series How can I create a chart with a List? Wie erzeuge ich ein Chart mit einer vorgegebenen Liste? 1) create a Class "ModelChart"
2) create a List<ModelChart>
3) create a Window mit a constructor of List<ModelChart>
4) Now one must create an array with a KeyValuePair
____ KeyValuePair<String, decimal>[] valuesXY =
______new KeyValuePair<String, decimal>[chartListe.Count];
5) put the values from the list in the array
____valuesXY[i] = new KeyValuePair<string, decimal>(chartListe[i].xValue, chartListe[i].yValue);
6) assign the ItemsSource
____ColumnSeries cs1 = ((ColumnSeries)mcChart.Series[0]);
____cs1.ItemsSource = valuesXY;

textfile with the code
sampleproject
chart wpf bubbles How can I create a bubbles chart? Wie erzeuge ich zwei Bubbles-Serien?
Wie erzeuge ich zwei Kreis-Diagramme? 		1) XAML: create a chart
2) CS: add two BubblesSeries to the chart
BubblesSeries.txt

Note:
One must create a private class with x/y/r

Image: chart_bubbles.png

Projekt: Chart_Bubbles.zip
chart wpf area How can I create a area chart? Wie erzeuge ich ein Area-Chart? 1) XAML: create a chart
2) CS: add two BubblesSeries to the chart
AreaSeries1.txt

Image: chart_area1.png

Projekt: Chart_Area1.zip
chart wpf scatter points How can I create a scatter chart, a point chart? Wie erzeuge ich ein Scatter oder Punkt-Chart? 1) XAML: create a chart
2) CS: add two BubblesSeries to the chart
ScatterSeries1.txt

Image: chart_scatter_points1.png

Projekt: Chart_Scatter1.zip

Database problems and solutions in WPF

Keywords Description Beschreibung Solution
select command How to use a select command Wie rufe ich mit einem Select-Befehl Daten aus der Datenbank? public DataTable selectDBS(string sSQL) {
try {
FbDataAdapter da = new FbDataAdapter(sSQL, _cnn);
DataTable dt = new DataTable("RELATIONS");
da.Fill(dt);
return dt;
}
catch (Exception e) {
MessageBox.Show("Fehlerhafte SQL-Anweisung\r\n" + e.Message + "\r\n" + sSQL, "SQL-Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
return null;
}
}
dbs.txt
wrapper class how can I create a wrapper class ? wie kann ich die DataTable in eine Klasse umwandeln? 1) You need a class "Department" with an interface "INotifyPropertyChanged"
2) each attrib must send an Change-Event
3) you need an array to save the objects (ObservableCollection<Department>)
4) Now, you only need to set the ItemsSource from a datagrid
5) datagrid.ItemsSource = dept_observerlist
navigator in WPF? how can I use a navigatorbar? wie kann ich einen Navigator-Leiste einfügen? First Solution: a navigatorbar in each form
1) create a grid
2) insert the buttons with images
3) create the click-events

Second Solution: a navigatorbar as Usercontrols
1) you create an usercontrol
2) insert the buttons with images
3) create the click-events in the usercontrols
4) create an interface "INavigatorbar"
5) the constructor get the parent "INavigatorbar"
6) in the click-events call the methods from "INavigatorbar"

navigatorbar_xml.txt
navigatorbar_cs.txt
navigatorbar_interface.txt
problems with the navigatorbar event how can I scoll the datagrid rows? wie kann ich eine Zeile in einem Datagrid ansteuern? 1) Change the selectedIndex
2) scroll to View
3) Focus setzen

Prev-Event:
datagrid.SelectedIndex = datagrid.SelectedIndex - 1;
datagrid.ScrollIntoView(datagrid.SelectedItem);
datagrid.Focus();
navigatorbar_datagrid.txt
ObservableCollection with delete items, datagrid how can I "save" the delete-Object and recognize the new and modify Objects to modify the database? wie kann ich die gelöschten Objekte mit merken und die neuen und geänderten Objekte erkennen?
Dann kann ich damit die Datenbank ändern. 		1) ModelObject has two new attribs
1a) bool newAttrib=true
1b) bool modifyAttrib=false

2) in the wrapper-Class (dataTable -> ObservableCollection ) change all attribt to false
2a) newAttrib=false
2b) modifyAttrib=false

3) in each setter-method set the modify-attrib

4) Now each new object has set the newAttrib

5) save the delete-object in a separate ObservableCollection

6) ask the user to save the changes (perhaps ;-)

7) save methods
7a) delete the items in the delete-list
7b) insert the new items
7c) update the modify items, that are not new

datagrid_new_delete_modify.txt
datagrid create manuel columns how can I create manuel the columns from an class? wie kann ich manuell die Spalten in einem Datagrid erzeugen Type myType = typeof(ModelEmployee);
PropertyInfo[] propertyInfos = myType.GetProperties();
foreach (PropertyInfo propertyInfo in propertyInfos) {
System.Diagnostics.Debug.WriteLine(propertyInfo.Name);
DataGridTextColumn dataColumn = new DataGridTextColumn();
dataColumn.Header = propertyInfo.Name;
Binding binding= new Binding(propertyInfo.Name);
binding.Mode = BindingMode.TwoWay;
binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
dataColumn.Binding = binding;
datagrid.Columns.Add(dataColumn);
}
datagrid_manual_column.txt
sort in a datagrid How can I sort two columns in a datagrid? Wie kann ich zwei Spalten automatisch sortieren? ICollectionView collView = null;
datagrid.ItemsSource = observerItems;
collView = CollectionViewSource.GetDefaultView(datagrid.ItemsSource);
collView.SortDescriptions.Add(new SortDescription("Lastname", ListSortDirection.Ascending));
collView.SortDescriptions.Add(new SortDescription("Firstname", ListSortDirection.Ascending));

datagrid_sort_column.txt
datagrid computes by column I have a table with a "computes by" column.
Samples:
length=to-from
yearsalary=monthsalary*12
name=Lastname+', '+firstname

How can I updated the "computes by column"? 		Ich habe eine Entity-tabelle mit einer Spalte, die automatisch berechnet wird.
In Firebird nennt man das "computes by"

Beispiele:
length=to-from
yearsalary=monthsalary*12
name=Lastname+', '+firstname

Wie kann man diese Spalte automatisch updated?
nach dem Speichern und neuladen ist der Wert ja da, doch während des Editierens? 		The problem ist, that the Change-Event is fired with the previous-Value, so without any code, you see the last change.

Solution:
You must implemented a separate method to fire an update-Event

datagrid_computed_by.txt

// After the cell lost the focus, the yearsalary ist set to the new value
private void datagrid_CellEditEnding(...) {
if (col.Header.Equals("Monthsalary")) {
DataGridRow row = e.Row;
ModelEmployee empl = (ModelEmployee)row.Item;
empl.updateYearsalary(); // important
}

In the class ModelEmployee:
public void updateYearsalary() {
NotifyPropertyChanged("Yearsalary");
System.Diagnostics.Debug.WriteLine("updateYearsalary: " + yearsalary);
}
datagrid with separate textbox I want a datagrid with an additional textbox.
How ? 		Wie kann ich neben den Datagrid ein und mehrere Textbox anzeigen lassen? The textbox need two values:
1) the instance from the array
2) the name of the attrib

Solution:
you create a grid or any other layout with a textbox.
the layoutcontainer get the instance with the datacontext.
the textbox get the value swith the binding-option.

XAML:
<grid Name="gridDetails">
<TextBox Name="tFirstname" Text="{Binding Path=Firstname, UpdateSourceTrigger=PropertyChanged }"
/>
</grid>
CS:
gridDetails.DataContext = empl_items[0];


datagrid_additional_textbox.txt
datagrid with separate checkbox I want a column checkbox in a datagrid. Wie kann ich ein bool'sches Attribut als Checkbox in einem Datagrid darstellen? <DataGridCheckBoxColumn
Header="IsGoodWorker"
Binding="{Binding Path=IsGoodWorker, UpdateSourceTrigger=PropertyChanged}"
/>
datagrid database "AllInOne" samples Can I get an "AllInOne"-Sample"? Gibt es ein "AllInOne"-Beispiel? SURE
Only program: Database_AllInOne.zip
Picture: Database_AllInOne1.png

Projekt: Project_Database_AllInOne.zip

main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs
datagrid database "AllInOne" samples with master/detail Can I get an "AllInOne"-Sample" with two master/details-datagrids? Gibt es ein "AllInOne"-Beispiel mit zwei Master/Detail-Datagrids? SURE
Only program: Database_AllInOne2.zip
Picture: Database_AllInOne2.png

Projekt: Project_Database_AllInOne2.zip

main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs
datagrid database "AllInOne" samples with DataGridComboBoxColumn and DataGridCheckBoxColumn Can I get an "AllInOne"-Sample" with a DataGridComboBoxColumn and a DataGridCheckBoxColumn? Gibt es ein "AllInOne"-Beispiel mit einer DataGridComboBoxColumn und einer DataGridCheckBoxColumn? SURE
Solution with a column-Definition in XAML
Only program: Database_AllInOne3.zip
Picture: Database_AllInOne3.png

Projekt: Project_Database_AllInOne3.zip

main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs
datagrid database "AllInOne" samples with DataGridComboBoxColumn and a DataGridCheckBoxColumn Code behind Can I get an "AllInOne"-Sample" with a DataGridComboBoxColumn and a DataGridCheckBoxColumn ? Gibt es ein "AllInOne"-Beispiel mit einer DataGridComboBoxColumn und einer DataGridCheckBoxColumn ? SURE
Solution with a column-Definition in CS !!!
Only program: Database_AllInOne4.zip
Picture: Database_AllInOne4.png

Projekt: Project_Database_AllInOne4.zip

main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs

DataGridComboBoxColumn

You need five steps to use a DataGridComboBoxColumn:

1) an ObservableCollection with the list of the items for the combobox
ObservableCollection<ModelDept> dept_items = new ObservableCollection<ModelDept>();

2) Insert the items in the ComboBox
dept_items.Add(new ModelDept(1, "FINZ", "Finanzen")); // pindex, shortname, longname

3) Change the attrib in ModelEmployee
Change the attrib in ModelEmployee from DeptIndex, the key, to an complete Object from typ ModelDept
DeptIndex symbolize the Pindex in a dept
OLD: private long aindex;
NEW: private ModelDept dept;
You must scan the list of dept's to search the correct pindex and set the new attrib "dept"

4) Implement Equal (IMPORTANT)
This methode must override, because it is called to select the Combobox item in the datagrid from the start

public override bool Equals(object obj) {
_if (obj is ModelDept) {
__ModelDept dept = (ModelDept)obj;
__return shortName.Equals(dept.shortName);
_}
_else {
__return false; // this code prevents a cast-Error
_}
}

5) Define the ComboBox in XAML
<DataGridComboBoxColumn Header="Department" x:Name="cbDept" SelectedItemBinding="{Binding Dept}" />

in cs:
cbDept.ItemsSource = dept_items;

Projekt: Project_Database_AllInOne3.zip
main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs 5) Define the ComboBox only in CS
Now all columns are generated with cs-code:
// delete the underline ;-)

datagrid.AutoGenerateColumns = false;
Type myType = typeof(ModelEmployee);
PropertyInfo[] propertyInfos = myType.GetProperties();
foreach (PropertyInfo propertyInfo in propertyInfos) {
_System.Diagnostics.Debug.WriteLine(propertyInfo.Name);
_if (propertyInfo.Name.Equals("Dept")) {
__DataGridComboBoxColumn dataCB = new DataGridComboBoxColumn();
__dataCB.Header = "Department";
__Binding binding2 = new Binding("Dept");
__//binding2.Mode = BindingMode.TwoWay; // bringt probleme
__binding2.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
__dataCB.SelectedItemBinding = binding2;
__dataCB.ItemsSource = dept_items;
__datagrid.Columns.Add(dataCB);
_}
else {
__DataGridTextColumn dataColumn = new DataGridTextColumn();
__dataColumn.Header = propertyInfo.Name;
__Binding binding = new Binding(propertyInfo.Name);
__binding.Mode = BindingMode.TwoWay;
__binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
__dataColumn.Binding = binding;
__datagrid.Columns.Add(dataColumn);
_}
} // foreachProjekt: Project_Database_AllInOne4.zip
main.xaml: MainWindow.xaml
main.cs: MainWindow.xaml.cs

DB_ABT

"Uhr" bzw. WinkelUhr

Das Programm zeigt den Zulauf in einem Schacht.
Der Winkel wird in gon, grad und mit Hilfe eines Sliders eingegeben.
Schacht.zip (Projekt)
Schacht.exe (Programm)

Bilder:
Schacht1.png
Schacht2.png

Literatur WPF

Windows Presentation Foundation
Thomas Claudius Huber
Galileo Computing
ISBN 978-3-8362-1538-1Pro WPF on C#2010
Matthew MacDonald
Apress-Verlag
ISBN 978-1-4302-7205-2


Window Presentation Foundation
Adam Nathan
SAMS-Verlag
ISBN 0-672-32891-7

Professional entwickeln mit Visual C# 2012
Grundlagen und Profiwissen
Matthias Geirhos
Galileo-Verlag
ISBN 978-3-8362-1954-9


Visual C# 2012
Grundlagen und Profiwissen
Doberanz, Gewinnus
Hanser-Verlag
ISBN 978-3-446-43439-4


WPF und XAML
Rainer Stropek, Karin Huber
entwickler.press
ISBN 978-3-939084-60-0

Literatur C#

Professional entwickeln mit Visual C# 2012
Grundlagen und Profiwissen
Matthias Geirhos
Galileo-Verlag
ISBN 978-3-8362-1954-9


Visual C# 2012
Grundlagen und Profiwissen
Doberanz, Gewinnus
Hanser-Verlag
ISBN 978-3-446-43439-4Softwareentwicklung mit C#
Hanspeter Mössenböck
dpunkt.Verlag
ISBN 3-89864-406-5




Datenbank-Programmierung mit Visual C# 2008
Walter Doberanz, Thomas Gewinnus
Microsoft Press
ISBN 978-3-86645-421-7


Links
http://www.guidetocsharp.de

http://msdn.microsoft.com/de-de/library/kx37x362.aspx

http://www.java2s.com/Code/CSharp/CatalogCSharp.htm

Gehe zu: Export to Excel