通过

ModelFileExtensionAttribute 类

  • 项目

Specifies a custom file extension that can be loaded or saved by the Entity Data Model Designer.

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
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple:=False)> _
<MetadataAttributeAttribute> _
Public NotInheritable Class ModelFileExtensionAttribute
    Inherits Attribute

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple=false)] 
[MetadataAttributeAttribute] 
public sealed class ModelFileExtensionAttribute : Attribute

[AttributeUsageAttribute(AttributeTargets::Class, AllowMultiple=false)] 
[MetadataAttributeAttribute] 
public ref class ModelFileExtensionAttribute sealed : public Attribute

/** @attribute AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple=false) */ 
/** @attribute MetadataAttributeAttribute() */ 
public final class ModelFileExtensionAttribute extends Attribute

AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple=false) 
MetadataAttributeAttribute 
public final class ModelFileExtensionAttribute extends Attribute

备注

In a Visual Studio extension, the ModelFileExtensionAttribute is used when extending the functionality of the Entity Data Model Designer (Entity Designer). Specifically, the ModelFileExtensionAttribute is used to annotate classes that implement the IModelConversionExtension interface. The ModelFileExtensionAttribute constructor accepts a string parameter that specifies the file extension for custom files that can be loaded and saved by the Entity Designer.

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
   System.Attribute
    Microsoft.Data.Entity.Design.Extensibility.ModelFileExtensionAttribute

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

ModelFileExtensionAttribute 成员
Microsoft.Data.Entity.Design.Extensibility 命名空间

其他资源

Visual Studio Extensibility Developer Center
Developing Visual Studio Extensions