摘要:升級EF6的步驟與程式修改 (Updating Applications to use EF6)
原文出處:http://entityframework.codeplex.com/wikipage?title=Updating%20Applications%20to%20use%20EF6
== 步 驟 :==================================================
第一,透過Visual Studio的 NuGet,搜尋 Entity字眼,就能找到 Entity Framework 6
第二,刪除舊有的 System.Data.Entity.dll版本(我個人建議:使用「空網站」來作,就比較沒這困擾)
第三,http://msdn.microsoft.com/en-us/data/dn469466
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Swap any EF Designer (EDMX) models to use EF 6.x code generation |
If you have any models created with the EF Designer, you will need to update the code generation templates to generate EF6 compatible code.
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第四,命名空間(NameSpace)又有異動
以前名為 System.Data.*的命名空間,都要改成 System.Data.Entity.Core.*
但有些「例外」,請看:
These types are in the Core namespaces because they are not used directly for most DbContext-based applications. Some types that were part of System.Data.Entity.dll are still used commonly and directly for DbContext-based applications and so have not been moved into the Core namespaces. These are:
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System.Data.EntityState => System.Data.Entity.EntityState
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System.Data.Objects.DataClasses.EdmFunctionAttribute =>System.Data.Entity.DbFunctionAttribute(Note that the class has been renamed; a class with the old name still exists and works, but it now marked as obsolete.)
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System.Data.Objects.EntityFunctions => System.Data.Entity.DbFunctions (Note that the class has been renamed; a class with the old name still exists and works, but it now marked as obsolete.)
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Spatial classes (e.g. DbGeography, DbGeometry) have moved from System.Data.Spatial => System.Data.Entity.Spatial
改版、變化、幹剿.......習慣就好,這就是IT人生 :-)
以前在 EF 4.0撰寫的程式,如果不能使用(尤其是ObjectQuery),可以參閱以下文章
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[遠距教學、教學影片] ASP.NET (Web Form) 課程 上線了!MIS2000Lab.主講
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