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.11.0 (in Microsoft.VisualStudio.Modeling.Sdk.11.0.dll)

Syntax

'Declaration
<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: 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.

See Also

Reference

ModelElementExtensionMethods Class

AddExtension Overload

Microsoft.VisualStudio.Modeling.Extensibility Namespace