Asp.net mvc 5 多个DataReader错误，在本地工作，但在已发布版本上不工作_Asp.net Mvc 5_Datareader

Asp.net mvc 5 多个DataReader错误，在本地工作，但在已发布版本上不工作

asp.net-mvc-5

Asp.net mvc 5 多个DataReader错误，在本地工作，但在已发布版本上不工作,asp.net-mvc-5,datareader,Asp.net Mvc 5,Datareader,当在本地运行此命令时，效果很好，但在发布并运行它之后，我得到“已经有一个与此命令关联的打开的DataReader，必须先关闭它。” 是否有合适的方法使用相同的数据集合在不同的表上生成多个对象这可能是处理这种情况的错误方法我基本上是使用一个对象表单中的信息来创建另一个对象 Localhost和发布的版本使用相同的连接字符串。我已经试过了 [HttpPost] [ValidateAntiForgeryToken] [ActionFilters.AuditInventory

当在本地运行此命令时，效果很好，但在发布并运行它之后，我得到“已经有一个与此命令关联的打开的DataReader，必须先关闭它。”

是否有合适的方法使用相同的数据集合在不同的表上生成多个对象

这可能是处理这种情况的错误方法

我基本上是使用一个对象表单中的信息来创建另一个对象

Localhost和发布的版本使用相同的连接字符串。我已经试过了

    [HttpPost]
    [ValidateAntiForgeryToken]
    [ActionFilters.AuditInventory]
    public ActionResult Create([Bind(Include = "CheckoutID,Date,Provider,Injection,Patient,Chart,Location,Lot,Restocked,Authorized,Accountable,Quantity")] CheckOutInjectionViewModel checkOutInjectionViewModel)
    { 
        foreach (var i in db.Inventories)
        {
            if (i.Location_Injection.Bottle == null)
            {
                if (i.Location_Injection.Location.Location == checkOutInjectionViewModel.Location && i.Location_Injection.Injection.Injection == checkOutInjectionViewModel.Injection)
                {
                    i.Quantity -= checkOutInjectionViewModel.Quantity;
                }
            }
        }



        if (ModelState.IsValid)
        {
            db.CheckedOutInjections.Add(checkOutInjectionViewModel);
            db.SaveChanges();
            var injection = new Injections
            {
                Accountable = checkOutInjectionViewModel.Accountable,
                Date = checkOutInjectionViewModel.Date,
                Injection = checkOutInjectionViewModel.Injection,
                Location = checkOutInjectionViewModel.Location,
                MySignature = checkOutInjectionViewModel.MySignature,
                Provider = checkOutInjectionViewModel.Provider,
                Quantity = checkOutInjectionViewModel.Quantity,
            };
            db.InjectionsAggregate.Add(injection);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(checkOutInjectionViewModel);
    }

堆栈跟踪

[InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first.]
   System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) +2076159
   System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +328
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +161
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +121
   System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +202
   System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch(TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) +104
   System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) +505
   System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +37

[EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details.]
   System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +126
   System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute(ObjectContext context, ObjectParameterCollection parameterValues) +1047
   System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction(Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) +469
   System.Data.Entity.Core.Objects.<>c__DisplayClass7.<GetResults>b__5() +205
   System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func`1 operation) +238
   System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +349
   System.Data.Entity.Core.Objects.DataClasses.EntityReference`1.Load(MergeOption mergeOption) +188
   System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.DeferredLoad() +449
   System.Data.Entity.Core.Objects.Internal.LazyLoadBehavior.LoadProperty(TItem propertyValue, String relationshipName, String targetRoleName, Boolean mustBeNull, Object wrapperObject) +131
   System.Data.Entity.Core.Objects.Internal.<>c__DisplayClass7`2.<GetInterceptorDelegate>b__2(TProxy proxy, TItem item) +151
   System.Data.Entity.DynamicProxies.Inventory_AAF69D7ACE3EC0D7440AC81F5B4FEF9AA1625FB9547A97AF87B7EEE3DB9F6C07.get_Location_Injection() +39
   Hughston_Injections.Controllers.CheckOutInjectionViewModelsController.Create(CheckOutInjectionViewModel checkOutInjectionViewModel) +123
   lambda_method(Closure , ControllerBase , Object[] ) +139
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +209
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
   System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +39
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +67
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +72
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +386
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +386
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +30
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +186
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +44
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +399
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +157

[InvalidOperationException:已经有一个与此命令关联的打开的DataReader，必须先关闭它。]
System.Data.SqlClient.SqlInternalConnectionDS.ValidateConnectionForExecute（SqlCommand命令）+2076159
System.Data.SqlClient.SqlCommand.ValidateCommand（字符串方法，布尔异步）+328
System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、String方法、TaskCompletionSource`1完成、Int32超时、任务和任务、Boolean和usedCache、Boolean asyncWrite、Boolean inRetry）+161
System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior，RunBehavior RunBehavior，Boolean returnStream，String方法）+121
System.Data.SqlClient.SqlCommand.ExecuteReader（CommandBehavior，String方法）+202
System.Data.Entity.Infrastructure.InternalDispatcher`1.Dispatch（目标目标，函数'3操作，TInterceptionContext拦截上下文，执行操作'3，执行操作'3）+104
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader（DbCommand命令，DbCommandInterceptionContext interceptionContext）+505
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStorommands（EntityCommand EntityCommand，CommandBehavior）+37
[EntityCommandExecutionException:执行命令定义时出错。有关详细信息，请参阅内部异常。]
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStorommands（EntityCommand EntityCommand，CommandBehavior）+126
System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute（ObjectContext上下文，ObjectParameterCollection参数值）+1047
System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction（Func`1 Func，IDbExecutionStrategy executionStrategy，Boolean startLocalTransaction，Boolean releaseConnectionOnSuccess）+469
System.Data.Entity.Core.Objects.c__DisplayClass7.b__5（）+205
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute（Func`1操作）+238
System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults（Nullable`1 forMergeOption）+349
System.Data.Entity.Core.Objects.DataClasses.EntityReference`1.Load（合并选项合并选项）+188
System.Data.Entity.Core.Objects.DataClasses.RelatedEnd.DeferredLoad（）+449
System.Data.Entity.Core.Objects.Internal.LazyLoadBehavior.LoadProperty（TItem propertyValue，String relationshipName，String targetRoleName，Boolean mustBeNull，Object wrapperObject）+131
System.Data.Entity.Core.Objects.Internal.c__显示类7`2.b___2（TProxy代理，TItem项）+151
System.Data.Entity.DynamicProxies.Inventory\u AAF69D7ACE3EC0D7440AC81F5B4FEF9AA1625FB9547A97AF87B7EEE3DB9F6C07.获取位置\u注入（）
Hughston_Injections.Controllers.checkoutinjectionViewModels控制器.Create（CheckOutInjectionViewModel CheckOutInjectionViewModel）+123
lambda_方法（闭包、控制器库、对象[]）+139
System.Web.Mvc.ReflectedActionDescriptor.Execute（ControllerContext ControllerContext，IDictionary`2参数）+209
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext ControllerContext，ActionDescriptor ActionDescriptor，IDictionary`2参数）+35
System.Web.Mvc.Async.AsyncControllerActionInvoker.b_u39（IAsyncResult asyncResult，ActionInvoking innerInvokeState）+39
System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate（IAsyncResult asyncResult）+67
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod（IAsyncResult asyncResult）+42
System.Web.Mvc.Async.AsyncInvocationWithFilters.b__3d（）+72
System.Web.Mvc.Async.c__显示类46.b_3f（）+386
System.Web.Mvc.Async.c__显示类46.b_3f（）+386
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters（IAsyncResult asyncResult）+42
System.Web.Mvc.Async.c__显示类2B.b__1c（）+30
System.Web.Mvc.Async.c__显示类21.b__1e（IAsyncResult asyncResult）+186
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction（IAsyncResult asyncResult）+38
System.Web.Mvc.Controller.b_u1d（IAsyncResult asyncResult，ExecuteCorerate innerState）+29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+65
System.Web.Mvc.Controller.EndExecuteCore（IAsyncResult asyncResult）+53
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+36
System.Web.Mvc.Controller.EndExecute（IAsyncResult asyncResult）+38
System.Web.Mvc.MvcHandler.b_uu5（IAsyncResult asyncResult，ProcessRequestState innerState）+44
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+65
System.Web.Mvc.MvcHandler.EndProcessRequest（IAsyncResult asyncResult）+38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute（）+399
System.Web.HttpApplication.ExecuteStep（IExecutionStep步骤，布尔值&同步完成）+157

这是我提出的解决方案，只有在从发布到的服务器上运行open DataReader时，我才继续收到该错误，在本地运行时一切正常

将所有内容转换为sql命令后，我要做的最后一件事是移动

    [HttpPost]
    [ValidateAntiForgeryToken]
    [ActionFilters.AuditInventory]
    public ActionResult Create([Bind(Include = "CheckoutID,Date,Provider,Injection,Patient,Chart,Location,Lot,Restocked,Authorized,Accountable,Quantity")] CheckOutInjectionViewModel checkOutInjectionViewModel)
    {
        if (ModelState.IsValid)
        {
            StringBuilder sb = null;
            using (SqlConnection conn = new SqlConnection("CONNECTION_STRING"))
            {
                try
                {
                    sb = new StringBuilder("INSERT INTO Injections VALUES (");
                    sb.Append("'" + (checkOutInjectionViewModel.Date.HasValue ? checkOutInjectionViewModel.Date.Value.ToString("yyyy-MM-dd") : "1999-01-01") + "',");
                    sb.Append("'" + checkOutInjectionViewModel.Provider + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Quantity.ToString() + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Accountable + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Location + "', ");
                    sb.Append("NULL,");
                    sb.Append("'" + checkOutInjectionViewModel.Injection + "');");

                    sb.Append("INSERT INTO CheckOutInjectionViewModels VALUES (");
                    sb.Append("'" + (checkOutInjectionViewModel.Date.HasValue ? checkOutInjectionViewModel.Date.Value.ToString("yyyy-MM-dd") : "1999-01-01") + "',");
                    sb.Append("'" + checkOutInjectionViewModel.Patient + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Chart + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Lot + "', ");
                    sb.Append("'FALSE',");
                    sb.Append("NULL,");
                    sb.Append("'FALSE',");
                    sb.Append("'" + checkOutInjectionViewModel.Provider + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Injection + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Location + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Accountable + "', ");
                    sb.Append("'" + checkOutInjectionViewModel.Quantity.ToString() + "', ");
                    sb.Append("NULL);");

                    conn.Open();


                    var context = new ApplicationDbContext();
                    context.Database.ExecuteSqlCommand(sb.ToString());
                    context.SaveChanges();

                    foreach (var i in db.Inventories)
                    {
                        if (i.Location_Injection.Bottle == null)
                        {
                            if (i.Location_Injection.Location.Location == checkOutInjectionViewModel.Location && i.Location_Injection.Injection.Injection == checkOutInjectionViewModel.Injection)
                            {
                                i.Quantity -= checkOutInjectionViewModel.Quantity;
                            }
                        }
                    }

                }
                catch (Exception ex)
                {
                    ViewBag.Error = ex.Message + Environment.NewLine + sb.ToString();
                    ViewBag.Locations = new SelectList(db.Locations, "Location", "Location");
                    ViewBag.Providers = new SelectList(db.Providers, "Provider", "Provider");
                    ViewBag.Injections = new SelectList(db.Injections, "Injection", "Injection");
                    ViewBag.Accountables = new SelectList(db.Accountables, "Accountable", "Accountable");
                }
                finally
                {
                    conn.Close();
                }
                return RedirectToAction("Index");
            }
        }
        return View(checkOutInjectionViewModel);
    }