PropertyExtensionContext.CreateChangeScope 方法

Creates an EntityDesignerChangeScope object and sets the string that will appear in the dropdown lists for the Undo and Redo buttons in Visual Studio.

命名空间: Microsoft.Data.Entity.Design.Extensibility
程序集： Microsoft.Data.Entity.Design.Extensibility（在 microsoft.data.entity.design.extensibility.dll 中）

用法

语法

声明
Public MustOverride Function CreateChangeScope ( _
    undoRedoDescription As String _
) As EntityDesignerChangeScope

public abstract EntityDesignerChangeScope CreateChangeScope (
    string undoRedoDescription
)

public:
virtual EntityDesignerChangeScope^ CreateChangeScope (
    String^ undoRedoDescription
) abstract

public abstract EntityDesignerChangeScope CreateChangeScope (
    String undoRedoDescription
)

public abstract function CreateChangeScope (
    undoRedoDescription : String
) : EntityDesignerChangeScope

参数

• undoRedoDescription
  The string that will appear in the dropdown lists for the Undo and Redo buttons in Visual Studio.

返回值

An EntityDesignerChangeScope object.

备注

In a Visual Studio extension, the CreateChangeScope method initializes an instance of the EntityDesignerChangeScope class. The EntityDesignerChangeScope class allows you to create a unit of work within the extension that can be undone or redone with the Undo and Redo buttons in Visual Studio.

For more information about extending the functionality of the ADO.NET Entity Data Model Tools, see Extending the Entity Data Model Tools and ADO.NET Entity Data Model Designer Extension Starter Kit.

线程安全

此类型的任何公共静态（在 Visual Basic 中为 共享）成员都是线程安全的。不保证所有实例成员都是线程安全的。

平台

开发平台

Windows XP Home Edition, Windows XP Professional, Windows Server 2003 、Windows Server 2008 和 Windows 2000

目标平台

另请参见

参考

PropertyExtensionContext 类
PropertyExtensionContext 成员
Microsoft.Data.Entity.Design.Extensibility 命名空间

其他资源

Visual Studio Extensibility Developer Center
Developing Visual Studio Extensions