C# 使用connectionString访问现有表
我正在编写一个web应用程序,它将访问/更新数据库中的几个现有表。目前,我正在尝试访问SQL express上数据库的本地版本以进行测试,但在搜索如何设置连接后,无法正确设置连接。My web.config文件当前的连接字符串设置如下:C# 使用connectionString访问现有表,c#,sql-server,asp.net-mvc,entity,connection-string,C#,Sql Server,Asp.net Mvc,Entity,Connection String,我正在编写一个web应用程序,它将访问/更新数据库中的几个现有表。目前,我正在尝试访问SQL express上数据库的本地版本以进行测试,但在搜索如何设置连接后,无法正确设置连接。My web.config文件当前的连接字符串设置如下: <add name="ContractDBContext" connectionString="Data Source=SBUWMPB01FHSM\SQLEXPRESS; Initial Catal
<add name="ContractDBContext"
connectionString="Data Source=SBUWMPB01FHSM\SQLEXPRESS;
Initial Catalog=12-2013 Derivative TrackingSQL;
Integrated Security=True"
providerName="System.Data.SqlClient" />
这是为DB表建模的类的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace ForeignExchange.Models
{
[Table("AccountingData")]
public class Contract
{
[Key][Required]
public int TKRContractID { get; set; }
public int AsOfMonth { get; set; }
public int AsOfQuarter { get; set; }
public int ASOfYear { get; set; }
public double CurrentMoFMVChg { get; set; }
public double LTDFMVChg { get; set; }
public double AccumulatedOCI { get; set; }
public double AccumulatedDerivAsset { get; set; }
public double AccumulatedPL { get; set; }
public double AccumulatedFAS5 { get; set; }
public double HistoricalSpotRate { get; set; }
public double HistoricalHedgedRate { get; set; }
}
[Table("AccountingData")]
public class ContractDBContext : DbContext
{
public DbSet<Contract> Contracts { get; set; }
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Web;
使用System.Data.Entity;
使用System.ComponentModel.DataAnnotations;
使用System.ComponentModel.DataAnnotations.Schema;
命名空间ForeignExchange.Models
{
[表(“会计数据”)]
公共类合同
{
[关键][必选]
公共int tkrconstract{get;set;}
公共整数AsOfMonth{get;set;}
public int AsOfQuarter{get;set;}
public int ASOfYear{get;set;}
公共双currentmovchg{get;set;}
公共双LTDFMVChg{get;set;}
公共双累积CI{get;set;}
公共双累加derivasset{get;set;}
公共双累积pl{get;set;}
公共双累积fas5{get;set;}
公共双历史spotrate{get;set;}
公共双历史Hedgedrate{get;set;}
}
[表(“会计数据”)]
公共类ContractDBContext:DbContext
{
公共数据库集契约{get;set;}
}
}
在编写了上面给出的两段代码之后,我使用“添加控制器”自动对话框来生成CRUD.cshtml页面和名为ContractsController的控制器。一旦我运行代码并尝试访问生成的应该显示该表的索引页,我在第行中得到以下错误
return View(db.Contracts.ToList())
EntityCommandExecutionExcception
An error occurred while executing the command definition.
System.Data.EntityCommandExecutionException was unhandled by user code
HResult=-2146232004
Message=An error occurred while executing the command definition. See the inner exception for details.
Source=System.Data.Entity
StackTrace:
at System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
at System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues)
at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
at System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()
at System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at ForeignExchange.Controllers.ContractsController.Index() in C:\Users\stonejo\documents\visual studio 2010\Projects\ForeignExchange\ForeignExchange\Controllers\ContractsController.cs:line 21
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.Async.AsyncControllerActionInvoker.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41()
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49()
InnerException: System.Data.SqlClient.SqlException
HResult=-2146232060
Message=Invalid column name 'AccumulatedFAS5'.
Source=.Net SqlClient Data Provider
ErrorCode=-2146232060
Class=16
LineNumber=11
Number=207
Procedure=""
Server=SBUWMPB01FHSM\SQLEXPRESS
State=1
StackTrace:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
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, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
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.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
InnerException:
返回视图(db.Contracts.ToList())
EntityCommandExecutionException
执行命令定义时出错。
用户代码未处理System.Data.EntityCommandExecutionException
HResult=-2146232004
消息=执行命令定义时出错。有关详细信息,请参见内部异常。
Source=System.Data.Entity
堆栈跟踪:
位于System.Data.EntityClient.EntityCommandDefinition.ExecuteStorommands(EntityCommand EntityCommand,CommandBehavior)
在System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext上下文,ObjectParameterCollection parameterValues)
位于System.Data.Objects.ObjectQuery`1.GetResults(可为null`1 forMergeOption)
位于System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator()
位于System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()处
位于System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator()处
位于System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator()
位于System.Collections.Generic.List`1..ctor(IEnumerable`1集合)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
在C:\Users\stonejo\documents\visual studio 2010\Projects\ForeignExchange\ForeignExchange\Controllers\ContractsController.cs中的ForeignExchange.ContractsController.Index()处:第21行
在lambda_方法中(闭包、控制器基、对象[])
位于System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller,Object[]参数)
位于System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext ControllerContext,IDictionary`2参数)
位于System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext ControllerContext,ActionDescriptor ActionDescriptor,IDictionary`2参数)
在System.Web.Mvc.Async.AsyncControllerActionInvoker.c__DisplayClass42.b__41()中
在System.Web.Mvc.Async.AsyncResultRapper.c_uuu显示类8`1.b_uuu7(IAsyncResult)
位于System.Web.Mvc.Async.AsyncResultRapper.WrappedAsyncResult`1.End()
位于System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
在System.Web.Mvc.Async.AsyncControllerActionInvoker.c_uuDisplayClass37.c_uuDisplayClass39.b_u33()中
在System.Web.Mvc.Async.AsyncControllerActionInvoker.c__DisplayClass4f.b__49()中
InnerException:System.Data.SqlClient.SqlException
HResult=-2146232060
消息=无效的列名“AccumeratedFas5”。
Source=.Net SqlClient数据提供程序
错误代码=-2146232060
等级=16
行号=11
数字=207
Procedure=“”
服务器=SBUWMPB01FHSM\SQLEXPRESS
状态=1
堆栈跟踪:
位于System.Data.SqlClient.SqlConnection.OneError(SqlException异常,布尔断开连接,操作'1 wrapCloseInAction)
位于System.Data.SqlClient.SqlInternalConnection.OneError(SqlException异常,布尔断开连接,操作'1 wrapCloseInAction)
位于System.Data.SqlClient.TdsParser.ThroweException和Warning(TdsParserStateObject StateObjectStateObj、布尔调用方连接锁、布尔异步关闭)
位于System.Data.SqlClient.TdsParser.TryRun(RunBehavior RunBehavior、SqlCommand cmdHandler、SqlDataReader dataStream、BulkCopySimpleResultSet bulkCopyHandler、TdsParserStateObject stateObj、Boolean和dataReady)
位于System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()处
在System.Data.SqlClient.SqlDataReader.get_MetaData()处
位于System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds、RunBehavior、String ResetOptions String)
位于System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、Boolean async、Int32超时、任务和任务、Boolean asyncWrite、SqlDataReader ds)
在System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、String方法、T