ModelElementExtensionMethods.AddExtension Method (ModelElement, Guid)
Extend this ModelElement with newly instantiated extension of the identified 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)
Syntax
'宣言
<ExtensionAttribute> _
Public Shared Function AddExtension ( _
element As ModelElement, _
extensionClassId As Guid _
) As ExtensionElement
public static ExtensionElement AddExtension(
this ModelElement element,
Guid extensionClassId
)
[ExtensionAttribute]
public:
static ExtensionElement^ AddExtension(
ModelElement^ element,
Guid extensionClassId
)
static member AddExtension :
element:ModelElement *
extensionClassId:Guid -> ExtensionElement
public static function AddExtension(
element : ModelElement,
extensionClassId : Guid
) : ExtensionElement
Parameters
- element
Type: Microsoft.VisualStudio.Modeling.ModelElement
ModelElement to be extended
- extensionClassId
Type: System.Guid
The domain class id 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).
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.