TextBox PreviewKeyDown, PreviewKeyUp, PreviewTextInput, KeyDown, KeyUp and TextChanged events : TextBox « Windows Presentation Foundation « C# / C Sharp

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C# / C Sharp » Windows Presentation Foundation » TextBox Screenshots  TextBox PreviewKeyDown, PreviewKeyUp, PreviewTextInput, KeyDown, KeyUp and TextChanged events    <Window x:Class="RoutedEvents.KeyPressEvents"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="KeyPressEvents" Height="400" Width="400" >     <StackPanel>           <DockPanel Margin="5">             <TextBlock Margin="3" >Type here:</TextBlock>             <TextBox PreviewKeyDown="KeyEvent" KeyDown="KeyEvent"                       PreviewKeyUp="KeyEvent" KeyUp="KeyEvent"                      PreviewTextInput="TextInput"                      TextChanged="TextChanged"></TextBox>           </DockPanel>       <ListBox Margin="5" Name="lstMessages"></ListBox>       <CheckBox Margin="5" Name="chkIgnoreRepeat">Ignore Repeated Keys</CheckBox>       <Button Click="cmdClear_Click" HorizontalAlignment="Right">Clear List</Button>     </StackPanel> </Window> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace RoutedEvents {     public partial class KeyPressEvents : System.Windows.Window     {         public KeyPressEvents()         {             InitializeComponent();         }                          private void KeyEvent(object sender, KeyEventArgs e)         {             if ((bool)chkIgnoreRepeat.IsChecked && e.IsRepeat) return;                          string message = "Event: " + e.RoutedEvent + " " + " Key: " + e.Key;             lstMessages.Items.Add(message);                     }         private void TextInput(object sender, TextCompositionEventArgs e)         {             string message = "Event: " + e.RoutedEvent + " " + " Text: " + e.Text;             lstMessages.Items.Add(message);         }         private void TextChanged(object sender, TextChangedEventArgs e)         {             string message = "Event: " + e.RoutedEvent;             lstMessages.Items.Add(message);         }         private void cmdClear_Click(object sender, RoutedEventArgs e)         {                         lstMessages.Items.Clear();         }     } }             Related examples in the same category 1. TextBox Style 2. Bind TextBlock to TextBox 3. TextBox focus listener 4. TextBox with custom ErrorTemplate and ToolTip 5. TextBox uses the ExceptionValidationRule and UpdateSourceExceptionFilter handler 6. TextBox with UpdateSourceExceptionFilter handler 7. TextBox with default ErrorTemplate 8. TextBox MouseLeftButtonDown action and PreviewMouseLeftButtonDown action 9. Assign your own class to DataContent and bind to TextBox 10. Listen to TextBox text changed event 11. Handler for the PreviewKeyDown event on the TextBox 12. TextBox: set text, select all, clear, prepend, insert, append, cut, paste, undo 13. Set TextBox to editable 14. TextBox text changed event 15. TextBox PreviewKeyDown 16. TextBox KeyDown 17. TextBox PreviewKeyUp 18. TextBox KeyUp 19. TextBox TextInput 20. TextBox PreviewTextInput 21. Scroll TextBox 22. TextBox TextChanged event 23. Use Dictionary to record which textbox has been changed and not saved 24. Set TextBox ContextMenu to null 25. TextBox Selection start, end and selected text 26. Scrollable TextBox Column 27. Check Spelling Error