TextBox selection changed event

    



<UserControl x:Class='SilverlightApplication3.MainPage'
    xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' 
    xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
    xmlns:d='http://schemas.microsoft.com/expression/blend/2008' 
    xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' 
    mc:Ignorable='d' 
    d:DesignWidth='640' 
    d:DesignHeight='480'>
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel>
            <TextBox Text="ABCDEFGHIJKLMNOPQRSTUVWXYZ" 
                     Height="100" 
                     AcceptsReturn="True" 
                     LostFocus="TextBox_LostFocus" 
                     SelectionChanged="TextBox_SelectionChanged" />
            </StackPanel>
    </Grid>
</UserControl>


//File: Page.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SilverlightApplication3
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }
        private void TextBox_SelectionChanged(object sender, RoutedEventArgs e)
        {
            TextBox t = sender as TextBox;
            int st = t.SelectionStart;
            int ln = t.SelectionLength;
            string strT = t.SelectedText;
        }

        private void TextBox_LostFocus(object sender, RoutedEventArgs e)
        {

        }

    }
}

1.	Setting Focus for Keyboard Input
2.	Creating a TextBox
3.	Adding a Binding to a TextBox from C#
4.	Removing a Binding from a TextBox
5.	Binding a property to a TextBox in XAML
6.	Animate TextBox Font Size
7.	TextBox changed event
8.	The default look of a TextBox. The TextBox in this case is defined within a StackPanel.
9.	A multiline text box.
10.	TextBox Key event
11.	TextBox Focus event
12.	Assign your own class to DataContent and bind to TextBox
13.	A basic Style definition. The text in the TextBox is entered at runtime.
14.	Reference source for TextBox
15.	Resource for TextBlock, TextBox and Button
16.	Set AcceptsReturn, VerticalScrollBarVisibility, HorizontalScrollBarVisibility for TextBox
17.	Demonstrating the various VerticalAlignment and HoriztonalAlignment options

TextBox selection changed event : TextBox « UI Controls « Silverlight

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