MarkupExtensionReturnTypeAttribute Constructor (Type, Type)
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MarkupExtensionReturnTypeAttribute Constructor (Type, Type)

Note: This API is now obsolete.

Do not use, see Remarks.

Namespace:  System.Windows.Markup
Assembly:  System.Xaml (in System.Xaml.dll)

[ObsoleteAttribute("The expressionType argument is not used by the XAML parser. To specify the expected return type, use MarkupExtensionReturnTypeAttribute(Type). To specify custom handling for expression types, use XamlSetMarkupExtensionAttribute.")]
public MarkupExtensionReturnTypeAttribute(
	Type returnType,
	Type expressionType


Type: System.Type
The return type that this  .NET Framework attribute reports.
Type: System.Type
Do not use; see Remarks.

The form of MarkupExtensionReturnTypeAttribute that reports a second parameter for an expression is deprecated/obsolete and should not be used. If an expression or other type or model for deferred evaluation is a possible return type, you should attribute with a return type of Object instead.

.NET Framework

Supported in: 3.5 SP1, 3.0 SP2
Obsolete (compiler warning) in 4

.NET Framework Client Profile

Supported in: 3.5 SP1
Obsolete (compiler warning) in 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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