MarkupExtensionReturnTypeAttribute Class
Definition
Important
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Reports the type that a markup extension can return.
public ref class MarkupExtensionReturnTypeAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=true)]
public sealed class MarkupExtensionReturnTypeAttribute : Attribute
[<System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=true)>]
type MarkupExtensionReturnTypeAttribute = class
inherit Attribute
Public NotInheritable Class MarkupExtensionReturnTypeAttribute
Inherits Attribute
- Inheritance
- Attributes
Remarks
A MarkupExtension derived custom class should apply this .NET Framework attribute to indicate a possible type-safe return type that is returned by its ProvideValue implementation. In other words, if a markup extension always returns a more specific type than type of Object, and casting to that type is a primary scenario, the markup extension class should attribute with MarkupExtensionReturnTypeAttribute and report that type.
In previous versions of the .NET Framework, this class existed in the WPF-specific assembly WindowsBase. In .NET Framework 4, MarkupExtensionReturnTypeAttribute is in the System.Xaml assembly. For more information, see Types Migrated from WPF to System.Xaml.
For more information on patterns for implementing a custom XAML markup extension, see MarkupExtension and Type Converters and Markup Extensions for XAML.
Constructors
MarkupExtensionReturnTypeAttribute() |
Initializes a new instance of the MarkupExtensionReturnTypeAttribute class. |
MarkupExtensionReturnTypeAttribute(Type) |
Initializes a new instance of the MarkupExtensionReturnTypeAttribute class using the provided Type. |
MarkupExtensionReturnTypeAttribute(Type, Type) |
Obsolete.
Deprecated; do not use. |
Properties
ExpressionType |
Obsolete.
Deprecated; do not use. |
ReturnType |
Gets the MarkupExtension return type that this .NET Framework attribute reports. |
TypeId |
When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute) |
Methods
Equals(Object) |
Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute) |
GetHashCode() |
Returns the hash code for this instance. (Inherited from Attribute) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
IsDefaultAttribute() |
When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute) |
Match(Object) |
When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) |
Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute) |
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) |
Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute) |
_Attribute.GetTypeInfoCount(UInt32) |
Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute) |
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) |
Provides access to properties and methods exposed by an object. (Inherited from Attribute) |
Applies to
See also
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