ModelElementExtensionMethods.AddExtension Method (ModelElement, DomainClassInfo)

Extend this ModelElement with a newly instantiated extension of the specified domain type. An InvalidOperationException will be thrown if the element already has an extension of that type.

Namespace:  Microsoft.VisualStudio.Modeling.Extensibility
Assembly:  Microsoft.VisualStudio.Modeling.Sdk.10.0 (in Microsoft.VisualStudio.Modeling.Sdk.10.0.dll)

public static ExtensionElement AddExtension(
	this ModelElement element,
	DomainClassInfo extensionClass


Type: Microsoft.VisualStudio.Modeling.ModelElement
ModelElement to be extended
Type: Microsoft.VisualStudio.Modeling.DomainClassInfo
The domain class of the type of ExtensionElement to be added

Return Value

Type: Microsoft.VisualStudio.Modeling.ExtensionElement
The newly instantiated and added extension

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ModelElement. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

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