Server Error in '/' Application.

Not allowed to change the 'ConnectionString' property. The connection's current state is open.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Not allowed to change the 'ConnectionString' property. The connection's current state is open.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidOperationException: Not allowed to change the 'ConnectionString' property. The connection's current state is open.]
   System.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key) +6060523
   System.Data.SqlClient.SqlConnection.set_ConnectionString(String value) +93
   MLibs.SQLExecute.ExecuteScalar(String query) +68
   DienCN247.Controllers.ProductsController.Index(String sortOrder, String page, String limit, String dir, String order, String infinite, String ajaxcatalog, String qs) in G:\Works\Web Projects\DienCN247\Projects\DienCN247\DienCN247\Controllers\ProductsController.cs:195
   lambda_method(Closure , ControllerBase , Object[] ) +419
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +157
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.<>c__DisplayClass24_0.<InvokeActionMethodWithFilters>b__0() +56
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +256
   System.Web.Mvc.<>c__DisplayClass24_1.<InvokeActionMethodWithFilters>b__2() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +190
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +522
   System.Web.Mvc.Controller.ExecuteCore() +98
   DienCN247.Controllers.BaseController.ExecuteCore() in G:\Works\Web Projects\DienCN247\Projects\DienCN247\DienCN247\Controllers\BaseController.cs:35
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +181
   System.Web.Mvc.<>c__DisplayClass151_0.<BeginExecute>b__0() +18
   System.Web.Mvc.Async.<>c.<.cctor>b__15_0(IAsyncResult asyncResult, Action action) +17
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +16
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +28
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9851493
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +50
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +163


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0