EF4 0..1 关系导致错误 2016：无法指定条件
这与上一个问题非常相似（并且可能是完全相同的问题）但我真的不太理解答案，无法确定。
我正在 Visual Studio RC1 中使用 Entity Framework 4 创建一个 azure 服务应用程序（因此它是 .Net 3.5）。我有一个包含很多模式的数据库，如下所示：
Thing ThingType
------------- --------------
Id : int Id : int
Type : int
其中 Thing.Type 引用 ThingType。当 EF4 从数据库组装模型时，会生成一个错误，内容如下：
错误 2016：无法为列成员“类型”指定条件，因为它标有“计算”或“标识”StoreGeneratePattern。
我不知道如何继续前进，但显然这是一个非常常见的情况。我非常有信心有人可以帮助我。
This is very similar to a previous question (and may be the exact same question) but I really didn't understand the answers enough to be able to tell for sure.
I am using Entity Framework 4 in Visual Studio RC1 to create an azure service app (so it is .Net 3.5). I have a database with a lot of patterns like the following:
Thing ThingType
------------- --------------
Id : int Id : int
Type : int
where Thing.Type is referencing a ThingType. When EF4 assembles the model from the database, an error is generated which reads:
Error 2016: Condition cannot be specified for Column member 'Type' because it is marked with a 'Computed' or 'Identity' StoreGeneratedPattern.
I'm at a loss as to how to move forward, but obviously this is a very common scenario. I feel very confident that somebody can help me out.
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在 RC1 中，存在一个错误，即外来密钥关系不断被标记为
StoreGeneratePattern="Identity"。这可能会导致您在这里看到的问题，但我不能肯定地说，因为您的环境不同。查看您的 EDMX 文件，您应该仅在 Thing 和 ThingType 的 Id 字段中看到 StoreGeneeratedPattern="Identity"，而不是在 ThingThingType 关系上看到。另请参阅http://blog.abodit.com/2010 /03/system-data-updateexception-a-value-shared-across-entities-or-associations-is-generate-in-multiple-location-check-that-mapping-does-not-split-an -entitykey-to-multiple-store- generated-columns/
Microsoft 已确认 RTM 已修复此错误，这很好，因为每次从数据库更新模型时它都会影响您！
In RC1 there is a bug where the foregin key relationships keep getting marked as
StoreGeneratedPattern="Identity". This may be causing the issue you are seeing here but I cannot say for sure since your environment is different. Take a look at your EDMX file, you should see the StoreGeneratedPattern="Identity" only the Id field for Thing and ThingType and not on the ThingThingType relationship.See also http://blog.abodit.com/2010/03/system-data-updateexception-a-value-shared-across-entities-or-associations-is-generated-in-more-than-one-location-check-that-mapping-does-not-split-an-entitykey-to-multiple-store-generated-columns/
Microsoft has confirmed that this bug is fixed for RTM which is good since it affects you every time you update the model from the database!