TextChangedEventArgs Class
.NET Framework 3.0
Provides data for the TextChanged event.
Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
The following example displays the number of times the text in a TextBox changes. Below is the XAML code for the example.
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="SDKSample.DetectChangedTextExample" Title="DetectChangedText"> <StackPanel> <TextBox Name="tbCountingChanges" TextChanged="textChangedEventHandler" TextWrapping="Wrap"> Here is the initial text in the textbox. Each time the contents of this box is changed, a change counter will be incremented and displayed in the TextBox below. Note that the TextChanged event is called when the TextBox control is initially populated with text, so the changes counter starts of at 1. </TextBox> <TextBox Name="tbCounterText">0</TextBox> </StackPanel> </Page>
Below is the code behind for the example.
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
namespace SDKSample
{
public partial class DetectChangedTextExample : Page
{
// This is a counter for the number of times the TextChanged fires
// for the tbCountingChanges TextBox.
private int uiChanges = 0;
// Event handler for TextChanged Event.
private void textChangedEventHandler(object sender, TextChangedEventArgs args)
{
uiChanges++;
if (tbCounterText != null)
{
tbCounterText.Text = uiChanges.ToString();
}
}
}
}
System.Object
System.EventArgs
System.Windows.RoutedEventArgs
System.Windows.Controls.TextChangedEventArgs
System.EventArgs
System.Windows.RoutedEventArgs
System.Windows.Controls.TextChangedEventArgs
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
ADD
Show: