RoutedPropertyChangedEventArgs<T> Class
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Provides data about a change in value to a dependency property as reported by particular routed events, including the previous and current value of the property that changed.
Inheritance Hierarchy
System.Object
System.EventArgs
System.Windows.RoutedEventArgs
System.Windows.RoutedPropertyChangedEventArgs<T>
Namespace: System.Windows
Assembly: System.Windows (in System.Windows.dll)
Syntax
'Declaration
Public Class RoutedPropertyChangedEventArgs(Of T) _
Inherits RoutedEventArgs
public class RoutedPropertyChangedEventArgs<T> : RoutedEventArgs
Type Parameters
- T
The type of the dependency property that has changed.
The RoutedPropertyChangedEventArgs<T> type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") .gif "Supported by Silverlight for Windows Phone") |
RoutedPropertyChangedEventArgs<T> | Initializes a new instance of the RoutedPropertyChangedEventArgs<T> class, with provided old and new values. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
NewValue | Gets the new value of a property as reported by a property-changed event. |
|
OldValue | Gets the previous value of the property as reported by a property-changed event. |
|
OriginalSource | Gets a reference to the object that raised the event. (Inherited from RoutedEventArgs.) |
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Methods
| Name | Description | |
|---|---|---|
|
Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
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Remarks
This is a generic class where the class is used for event data of different events. Different routed events can specify the type constraint of the generic to produce a type-specific event data class. Once the class is constrained, the OldValue and NewValue properties also reflect these type constraints. Therefore, you can use a common event data class for different property-changed events without requiring different delegates for each possible property type.
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.