EF通用DAL程序集中的连接字符串

The Structure of the project :

有一个模块文件夹，我需要添加数据库并使存储库就在那里，其他模块和程序集可以使用它 . 新增内容：将其更改为先前已将配置文件放置在根应用程序中的状态，仍然存在错误 . 这篇文章完全编辑 .

The Database Location :

location：.... \ db \ db.sdf（卖出的app.config上面2级）

The App.Config file

location：modules \ ModuleX \（原名）

新地点：壳牌\（主体工程）

New Version :

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="MyRecordzContext" connectionString="metadata=res://*...
  </connectionStrings>
</configuration>

2 Cases of suspect : providerName = "System.Data.EntityClient"

LocalDbConnectionFactory

Error Info :

错误行：TblMyRecord MyRecord = context.MyRecords.First（w => w.MyRecord == stMyRecord）;

错误：在应用程序配置文件中找不到名为'MyRecordzContext'的连接字符串 .

Goal ：如何更改connectionstring，我的app.config使应用程序按预期工作

这里使用EF 5.0，SQL CE，Prism，WPF，MVVM，C＃

Error :

错误：'System.Windows.Application'的类型初始值设定项引发了异常 .

在应用程序运行时出现 .

错误似乎在任何构建之前 .

Stack Trace :

PresentationFramework.dll!System.Windows.Application.Application()
Xz.Shell.exe!Xz.Shell.App.App()
Xz.Shell.exe!Xz.Shell.App.Main()
[Native to Managed Transition]
[Managed to Native Transition]
mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args)
Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state)
mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state)
mscorlib.dll!System.Threading.ThreadHelper.ThreadStart()
[Native to Managed Transition]