Provides data for the TextChanged event.
Assembly: PresentationFramework (in PresentationFramework.dll)
Initializes a new instance of theclass, using the specified event ID and undo action.
|TextChangedEventArgs(RoutedEvent, UndoAction, ICollection(Of TextChange))|
Initializes a new instance of theclass, using the specified event ID, undo action, and text changes.
Gets a collection of objects that contains information about the changes that occurred.
Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. (Inherited from RoutedEventArgs.)
Gets or sets a reference to the object that raised the event. (Inherited from RoutedEventArgs.)
Gets how the undo stack is caused or affected by this text change
Determines whether the specified object is equal to the current object.(Inherited from Object.)
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
Serves as the default hash function. (Inherited from Object.)
Performs the proper type casting to call the type-safe TextChangedEventHandler delegate for the TextChanged event.(Overrides RoutedEventArgs.InvokeEventHandler(Delegate, Object).)
Returns a string that represents the current object.(Inherited from Object.)
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.
Namespace SDKSample Partial Public Class DetectChangedTextExample Inherits Page ' This is a counter for the number of times the TextChanged fires ' for the tbCountingChanges TextBox. Private uiChanges As Integer = 0 ' Event handler for TextChanged Event. Private Sub textChangedEventHandler(ByVal sender As Object, ByVal args As TextChangedEventArgs) uiChanges += 1 If tbCounterText IsNot Nothing Then tbCounterText.Text = uiChanges.ToString() End If End Sub End Class End Namespace
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.