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NativeActivityMetadata.RequireExtension<T> Method

Specifies that the activity requires an extension of the specified generic type at runtime.

Namespace:  System.Activities
Assembly:  System.Activities (in System.Activities.dll)

public void RequireExtension<T>()
where T : class

Type Parameters


The type of the extension.

If the host fails to provide an extension of the specified type, validation fails.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported 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.