Creates a unit of work that can be undone or redone with 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 MustInherit Class EntityDesignerChangeScope
Implements IDisposable
public abstract class EntityDesignerChangeScope : IDisposable
public ref class EntityDesignerChangeScope abstract : IDisposable
public abstract class EntityDesignerChangeScope implements IDisposable
public abstract class EntityDesignerChangeScope implements IDisposable
备注
In a Visual Studio property extension, the EntityDesignerChangeScope class allows you to create a unit of work that can be undone or redone with the Undo and Redo buttons in Visual Studio. An instance of EntityDesignerChangeScope is created by the CreateChangeScope method.
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.
继承层次结构
System.Object
Microsoft.Data.Entity.Design.Extensibility.EntityDesignerChangeScope
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
EntityDesignerChangeScope 成员
Microsoft.Data.Entity.Design.Extensibility 命名空间
其他资源
Visual Studio Extensibility Developer Center
Developing Visual Studio Extensions