TextBox: set text, select all, clear, prepend, insert, append, cut, paste, undo : TextBox « Windows Presentation Foundation « VB.Net

1. VB.Net
2. Windows Presentation Foundation
3. TextBox

TextBox: set text, select all, clear, prepend, insert, append, cut, paste, undo

    
<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="300" Width="300">
    <StackPanel>
        <TextBox AcceptsReturn="True" Height="100" IsReadOnly="True" 
                 Name="textBox1" TextAlignment="Left" TextWrapping="Wrap" 
                 VerticalScrollBarVisibility="Auto">
            Default starting text.
        </TextBox>
        <WrapPanel Margin="10">
            <Button Margin="5" Name="textButton" Width="75" Click="TextButton_Click">Set Text</Button>
            <Button Margin="5" Name="selectAllButton" Width="75" Click="SelectAllButton_Click">Select All</Button>
            <Button Margin="5" Name="clearButton" Width="75" Click="ClearButton_Click">Clear</Button>
            <Button Margin="5" Name="prependButton" Width="75" Click="PrependButton_Click">Prepend</Button>
            <Button Margin="5" Name="insertButton" Width="75" Click="InsertButton_Click">Insert</Button>
            <Button Margin="5" Name="appendButton" Width="75" Click="AppendButton_Click">Append</Button>
            <Button Margin="5" Name="cutButton" Width="75" Click="CutButton_Click">Cut</Button>
            <Button Margin="5" Name="pasteButton" Width="75" Click="PasteButton_Click">Paste</Button>
            <Button Margin="5" Name="undoButton" Width="75" Click="UndoButton_Click">Undo</Button>
        </WrapPanel>
    </StackPanel>
</Window>
//File:Window.xaml.vb
Imports System.Windows
Imports System.Windows.Controls

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub AppendButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.AppendText("text")
    End Sub
    Private Sub ClearButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Clear()
    End Sub
    Private Sub CutButton_Click(sender As Object, e As RoutedEventArgs)
      If textBox1.SelectionLength = 0 Then
        MessageBox.Show("Select text to cut first.", Title)
      Else
        MessageBox.Show("Cut: " + textBox1.SelectedText, Title)
        textBox1.Cut()
      End If
    End Sub

    Private Sub InsertButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Text = textBox1.Text.Insert(textBox1.CaretIndex, "text")
    End Sub

    Private Sub PasteButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Paste()
    End Sub

    Private Sub PrependButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Text = textBox1.Text.Insert(0, "Prepend")
    End Sub
    Private Sub SelectAllButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.SelectAll()
      textBox1.Focus()
    End Sub

    Private Sub TextButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Text = "new value"
    End Sub

    Private Sub UndoButton_Click(sender As Object, e As RoutedEventArgs)
      textBox1.Undo()
    End Sub
  End Class
End Namespace

   
    
    
    
  

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