功能进口在实体模型与非实体返回类型 [英] Function Imports in Entity Model with a non-Entity Return Type

问题描述

我有我的实体数据模型和<一个存储过程href="http://techen$c$cr.com/wp-content/uploads/2009/02/entity-data-model-add-function-import.png">added它的功能的进口的。

I have a stored procedure in my Entity Data Model and added it to the function imports.

问题是...的Visual Studio生成函数code模型的code-后面当且仅当我指定的返回是一个实体类型。 标量和空返回类型不工作。 Visual Studio中不产生当我选择它的函数code。

Problem is ... Visual Studio generates the function code in the model's code-behind if and only if I specify the return to be an entity type. Scalar and null return types do not work. Visual Studio does not generate the function code when I choose them.

有我丢失的东西，或者这是一个错误？
任何变通办法？

Is there something I am missing, or is this a bug?
Any work-arounds?

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使用Visual Studio 2008 v9.0.30729.1 SP（服务包1）

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Using Visual Studio 2008 v9.0.30729.1 SP (Service Pack 1)

推荐答案

这与其说是一个错误，因为它是缺乏一个功能。实体框架只是不支持存储过程返回标量值的现在。我认为这是应该改变在.NET 4.0中。在此期间，您可以通过CreateDbCommand.

It's not so much a bug as it is the lack of a feature. The Entity Framework just doesn't support stored procedures returning scalar values right now. I believe this is supposed to change in .NET 4.0. In the meantime, you can execute such a stored procedure by using the store connection, available via CreateDbCommand.

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