IModelConversionExtension.OnBeforeFileSaved 方法

Defines custom functionality for converting an .edmx file to a file with a custom format before the file is saved.

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
Sub OnBeforeFileSaved ( _
    context As ModelConversionExtensionContext _
)

void OnBeforeFileSaved (
    ModelConversionExtensionContext context
)

void OnBeforeFileSaved (
    ModelConversionExtensionContext^ context
)

void OnBeforeFileSaved (
    ModelConversionExtensionContext context
)

function OnBeforeFileSaved (
    context : ModelConversionExtensionContext
)

参数

• context
  Provides file and Visual Studio project information.

备注

In a Visual Studio extension, the OnBeforeFileSaved method is used to extend the functionality of the Entity Data Model Designer (Entity Designer). Specifically, the OnBeforeFileSaved method converts an .edmx file to a custom format before the file is saved. The Microsoft.Data.Entity.Design.Extensibility.ModelFileExtensionAttribute is used to annotate classes that implement the IModelConversionExtension interface. The Microsoft.Data.Entity.Design.Extensibility.ModelFileExtensionAttribute constructor accepts a string parameter that specifies the file extension for custom files that can be loaded and saved by the Entity Designer.

注意：
When building a Visual Studio extension that also implements the IModelTransformExtension.OnBeforeModelSaved method, the OnBeforeFileSaved method will be called after the IModelTransformExtension.OnBeforeModelSaved 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.

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

Change History

另请参见

参考

IModelConversionExtension 接口
IModelConversionExtension 成员
Microsoft.Data.Entity.Design.Extensibility 命名空间

其他资源

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