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| 16.4.12.Mark the text control as being changed to prevent any text content or selection changed events |
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<Window
x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="600" Width="800">
<DockPanel>
<StackPanel DockPanel.Dock="Bottom" Orientation="Horizontal">
<TextBox x:Name="tbxInsertionText" Width="200" Margin="5,0" />
<Button DockPanel.Dock="Bottom" Content="Insert" Click="btnInsert_Click"/>
</StackPanel>
<RichTextBox x:Name="rtbTextContent" />
</DockPanel>
</Window>
//File:Window.xaml.vb
Imports System.Windows
Imports System.Windows.Documents
Imports System.Windows.Input
Namespace WpfApplication1
Public Partial Class Window1
Inherits Window
Public Sub New()
InitializeComponent()
End Sub
Private Sub btnInsert_Click(sender As Object, e As RoutedEventArgs)
If String.IsNullOrEmpty(tbxInsertionText.Text) Then
Return
End If
rtbTextContent.BeginChange()
If rtbTextContent.Selection.Text <> String.Empty Then
rtbTextContent.Selection.Text = String.Empty
End If
Dim tp As TextPointer = rtbTextContent.CaretPosition.GetPositionAtOffset(0, LogicalDirection.Forward)
rtbTextContent.CaretPosition.InsertTextInRun(tbxInsertionText.Text)
rtbTextContent.CaretPosition = tp
rtbTextContent.EndChange()
Keyboard.Focus(rtbTextContent)
End Sub
End Class
End Namespace
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| 16.4.TextBox | | 16.4.1. | You cannot use TextBox and Image at the same time for Button Content | |  | | 16.4.2. | Single line and Multiline TextBox | |  | | 16.4.3. | TextBox Column | |  | | 16.4.4. | Bind value to TextBox | |  | | 16.4.5. | An upside down TextBox | |  | | 16.4.6. | Style with Data Trigger for TextBox | |  | | 16.4.7. | TextBox with custom ErrorTemplate and ToolTip | |  | | 16.4.8. | TextBox uses the ExceptionValidationRule and UpdateSourceExceptionFilter handler | |  | | 16.4.9. | TextBox with UpdateSourceExceptionFilter handler | |  | | 16.4.10. | TextBox focus listener | |  | | 16.4.11. | TextBox MouseLeftButtonDown action and PreviewMouseLeftButtonDown action | |  | | 16.4.12. | Mark the text control as being changed to prevent any text content or selection changed events | | | | 16.4.13. | Listen to TextBox text changed event | |  | | 16.4.14. | Handler for the PreviewKeyDown event on the TextBox | |  | | 16.4.15. | Format TextBox with MenuItem: normal, bold, italic | |  | | 16.4.16. | TextBox: set text, select all, clear, prepend, insert, append, cut, paste, undo | |  | | 16.4.17. | Set TextBox to editable | |  | | 16.4.18. | Scroll TextBox | |  | | 16.4.19. | Use TextBox.CommandBindingst to bind command | |  | | 16.4.20. | Use Dictionary to record which textbox has been changed and not saved | |  | | 16.4.21. | Set TextBox ContextMenu to null | |  | | 16.4.22. | TextBox Selection start, end and selected text | |  | | 16.4.23. | Scrollable TextBox Column | |  | | 16.4.24. | Check Spelling Error | |  |
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