ASP.NET MVC2 Guid持久性問題

我有一個ASP.NET MVC2應用程序在.NET 4.0和使用VS 2010，有兩個表（其中），employees表具有以下列： Firstname，MiddleName， LastName，NationalID，EmployeeType，MobileNumber，Email和UserId。ASP.NET MVC2 Guid持久性問題

userId字段是來自aspnet_users表的外鍵，它恰好是一個guid。我試圖堅持所選用戶的員工詳細信息，但因爲出現錯誤而無法完成此操作。

可以使用ViewData字典提取和顯示所選用戶的guid值。 userId guid值是23aa8cd9-7552-403c-8c99-fcdd611cb188。

我想將此值與其他員工屬性一起保留，但是當我提交表單時，出現下面顯示的錯誤。我也使用EF4作爲我的模型。這裏的堆棧跟蹤：

System.Data.UpdateException was unhandled by user code 
    Message=An error occurred while updating the entries. See the inner exception for details. 
    Source=System.Data.Entity 
    StackTrace: 
     at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) 
     at System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache) 
     at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options) 
     at System.Data.Objects.ObjectContext.SaveChanges() 
     at TechDispatch.Models.EmployeeRepository.SaveChanges() in C:\Projects\TechDispatch\TechDispatch\Models\EmployeeRepository.cs:line 131 
     at TechDispatch.Models.EmployeeRepository.AddNewEmployee(Employee Add) in C:\Projects\TechDispatch\TechDispatch\Models\EmployeeRepository.cs:line 127 
     at TechDispatch.Controllers.EmployeeController.Create(Employee employee) in C:\Projects\TechDispatch\TechDispatch\Controllers\EmployeeController.cs:line 69 
     at lambda_method(Closure , ControllerBase , Object[]) 
     at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) 
     at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) 
     at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) 
     at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a() 
     at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) 
    InnerException: System.Data.SqlClient.SqlException 
     Message=String or binary data would be truncated. 
The statement has been terminated. 
     Source=.Net SqlClient Data Provider 
     ErrorCode=-2146232060 
     Class=16 
     LineNumber=1 
     Number=8152 
     Procedure="" 
     Server=. 
     State=13 
     StackTrace: 
      at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) 
      at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) 
      at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() 
      at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) 
      at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() 
      at System.Data.SqlClient.SqlDataReader.get_MetaData() 
      at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) 
      at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) 
      at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) 
      at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) 
      at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) 
      at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) 
      at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) 
      at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary`2 identifierValues, List`1 generatedValues) 
      at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) 
     InnerException:

任何人都可以請協助？

來源

2011-01-30 imdondo

這個錯誤很可能沒有任何與ASP.NET MVC或。而是它的實體框架/ SQL相關。我建議你改變你的問題標籤，以吸引有關這些領域的知識的讀者。你用什麼數據庫？你沒有提到它。 – Codo 2011-01-30 09:23:16

對我來說，這個消息意味着要添加一個字符串，它是你的CHAR/VARCHAR領域之一過長：

 
    String or binary data would be truncated. 
    The statement has been terminated.

來源

2011-01-30 06:26:34 anon

儘管我可以同意你的看法，但我並不認爲我提供的任何內容都比我提出的所有varchar字段都要大。我也有驗證，所以我會發布之前知道。這條消息怎麼樣：Dictionary`2 identifierValues，List`1 generatedValues – imdondo 2011-01-30 08:19:52

ASP.NET MVC2 Guid持久性問題

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