Provides file and project information to Visual Studio extensions that enable the loading and saving of custom file formats.
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 ModelConversionExtensionContext
Inherits ExtensionContext
public abstract class ModelConversionExtensionContext : ExtensionContext
public ref class ModelConversionExtensionContext abstract : public ExtensionContext
public abstract class ModelConversionExtensionContext extends ExtensionContext
public abstract class ModelConversionExtensionContext extends ExtensionContext
备注
In a Visual Studio extension, use the ModelConversionExtensionContext class to enable the Entity Data Model Designer (Entity Designer) to load and save files with a custom format. An instance of ModelConversionExtensionContext is passed to the IModelConversionExtension.OnAfterFileLoaded method or the IModelConversionExtension.OnBeforeFileSaved method, which define how custom file formats will be loaded and saved.
By default, the Entity Designer loads and saves .edmx files. The IModelConversionExtension class enables the Entity Designer to load and save files that have a different format. The IModelTransformExtension class, by contrast, transforms an .edmx file before it is displayed in the Entity Designer and before it is saved. These two classes can be used together in the same Visual Studio extension.
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.ExtensionContext
Microsoft.Data.Entity.Design.Extensibility.ModelConversionExtensionContext
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
ModelConversionExtensionContext 成员
Microsoft.Data.Entity.Design.Extensibility 命名空间
其他资源
Visual Studio Extensibility Developer Center
Developing Visual Studio Extensions
.edmx File Overview