asp.net-mvc - asp.net mvc教程项目

Question

我在使用“Pro ASP.NET MVC Framework”一书中的代码时遇到了一些问题。我在第 96 页是为了那些以前可能读过这本书的人。当我运行代码时，我得到以下信息:

System.Data.SqlClient.SqlException was unhandled by user code
  Message="Invalid object name 'Products'."
  Source=".Net SqlClient Data Provider"
  ErrorCode=-2146232060
  Class=16
  LineNumber=1
  Number=208
  Procedure=""
  Server=".\\SQLEXPRESSADV"
  State=1
  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(TdsParserStateObject stateObj)
       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()
       at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
       at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
       at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
       at System.Data.Linq.Table`1.GetEnumerator()
       at System.Data.Linq.Table`1.System.Collections.Generic.IEnumerable<TEntity>.GetEnumerator()
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at WebUI.Controllers.ProductsController.List() in C:\Documents and Settings\adamsb1\My Documents\Visual Studio 2008\Projects\StoreSolution\WebUI\Controllers\ProductsController.cs:line 28
       at lambda_method(ExecutionScope , 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__DisplayClassa.<InvokeActionMethodWithFilters>b__7()
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
  InnerException: 

我所有的代码都可以正常构建，没有错误，而且看起来与书中完全相同。但是，我无法让它工作。我是一个老派的 ASP 人，所以这对我来说是全新的。

Answer 1

错误在数据库中。您提供的连接字符串指向错误的数据库，或者您正在使用的数据库缺少表“Products”，该表应该存在。

由于看起来您正在使用 SQLExpress 数据库，我可能猜想您还没有设置教程数据库 - 该程序正在尝试从您已经在计算机上设置的任何 SQLExpress 数据库中读取数据。