ModelConversionExtensionContext 類別

Provides file and project information to Visual Studio extensions that enable the loading and saving of custom file formats.

命名空間: Microsoft.Data.Entity.Design.Extensibility
組件: Microsoft.Data.Entity.Design.Extensibility (於 microsoft.data.entity.design.extensibility.dll)

使用方式

語法

'宣告
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

備註

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.

繼承階層

System.Object
   Microsoft.Data.Entity.Design.Extensibility.ExtensionContext
    Microsoft.Data.Entity.Design.Extensibility.ModelConversionExtensionContext

執行緒安全性

任何這個類型的公用靜態 (在 Visual Basic 中為 共用) 成員都具備執行緒安全。 不保證任何執行個體成員安全執行緒。

平台

開發平台

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

目標平台

另請參閱

參考

ModelConversionExtensionContext 成員
Microsoft.Data.Entity.Design.Extensibility 命名空間

其他資源

Visual Studio Extensibility Developer Center
Developing Visual Studio Extensions
.edmx File Overview