C# 在Web.config中调用连接字符串时出现非法字符异常

我正在使用entity framework创建一个C#MVC4.5项目，在我的Web.config中设置了以下连接字符串：

<connectionStrings>
    <add name="Entities" 
         connectionString="metadata=res://*/PersistenceModel.csdl|res://*/PersistenceModel.ssdl|res://*/PersistenceModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" 
         providerName="System.Data.EntityClient" /> 
</connectionStrings>

这会引发“路径中的非法字符”异常：

[ArgumentException: Illegal characters in path.]
   System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional) +10631190
   System.IO.Path.Combine(String path1, String path2) +42
   WebMatrix.Data.ConfigurationManagerWrapper.GetConnection(String name, Func`2 getConfigConnection, Func`2 fileExists) +208
   WebMatrix.Data.ConfigurationManagerWrapper.GetConnection(String name) +91
   WebMatrix.Data.Database.OpenNamedConnection(String name, IConfigurationManager configurationManager) +18
   WebMatrix.Data.Database.Open(String name) +61
   WebMatrix.WebData.DatabaseConnectionInfo.Connect() +42
   WebMatrix.WebData.SimpleMembershipProvider.ConnectToDatabase() +25
   WebMatrix.WebData.SimpleMembershipProvider.CreateTablesIfNeeded() +35
   WebMatrix.WebData.WebSecurity.InitializeMembershipProvider(SimpleMembershipProvider simpleMembership, DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean createTables) +73
   WebMatrix.WebData.WebSecurity.InitializeProviders(DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +51
   WebMatrix.WebData.WebSecurity.InitializeDatabaseConnection(String connectionStringName, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +51
   TravPro.Web.Filters.SimpleMembershipInitializer..ctor() in c:\Work\trunk\TravPro\TravPro.Web\Filters\InitializeSimpleMembershipAttribute.cs:43

---

有人能帮忙告诉我哪些字符需要转义，或者如何修复此异常吗？

我能看到的唯一问题可能是您的“字符”-请尝试使用单引号代替

您存储的连接字符串是用于实体框架的-它不是“常规”字符“ADO.NET连接字符串。实体框架连接字符串确实包含一个常规的ADO.NET连接字符串（提供者连接字符串中的位=……），但除此之外还有更多内容

另一方面，

WebSecurity

需要一个常规ADO.NET连接字符串作为输入-而不是一个实体框架连接字符串

因此，要解决此问题，您需要在配置文件的

部分中添加

WebSecurity

的第二个连接字符串：

<connectionStrings>
    <add name="Entities" 
         connectionString="metadata=res://*/PersistenceModel.csdl|res://*/PersistenceModel.ssdl|res://*/PersistenceModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" 
         providerName="System.Data.EntityClient" />
    <add name="RegularADONET" 
         connectionString="data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;" 
</connectionStrings>

我尝试了你的方式（@marc_s），但是我仍然有问题，尽管它确实引导我朝着解决问题的方向前进。我将连接字符串更改为：

<connectionStrings>
    <add name="DefaultConnection"
         connectionString="data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;"
         providerName="System.Data.SqlClient" />
    <add name="Entities"
         connectionString="metadata=res://*/PersistenceModel.csdl|res://*/PersistenceModel.ssdl|res://*/PersistenceModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;"
         providerName="System.Data.EntityClient" />
</connectionStrings>

谢谢你给我指明了正确的方向
太爱了

string con = ConfigurationManager.ConnectionStrings["RegularADONET"].ConnectionString;
WebSecurity.InitializeDatabaseConnection(con, "UserProfile", "UserId", "UserName", true);

<connectionStrings>
    <add name="DefaultConnection"
         connectionString="data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;"
         providerName="System.Data.SqlClient" />
    <add name="Entities"
         connectionString="metadata=res://*/PersistenceModel.csdl|res://*/PersistenceModel.ssdl|res://*/PersistenceModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\sqlexpress;initial catalog=TravPro;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;"
         providerName="System.Data.EntityClient" />
</connectionStrings>

WebSecurity.InitializeDatabaseConnection("DefaultConnection", 
                                         "UserProfile", 
                                         "UserId", 
                                         "UserName", 
                                         true);