Server Error in '/' Application.

There is already an open DataReader associated with this Command which must be closed first.

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: There is already an open DataReader associated with this Command which must be closed first.

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: There is already an open DataReader associated with this Command which must be closed first.]
   System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) +1647630
   System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) +91
   System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +274
   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) +119
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +65
   System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +170
   System.Data.SqlClient.SqlCommand.ExecuteReader() +104
   Tom.Dal.DalUtility.LoadObjectListFromDatabase(SqlCommand command) in D:\AEPD\Tom.Dal\DalUtility.cs:18
   Tom.Dal.DalUtility.SelectParameters(String procname) in D:\AEPD\Tom.Dal\DalUtility.cs:87
   Tom.Dal.SqlHelper.ExcuteSelectMultiObject(String procname, Object parameter) in D:\AEPD\Tom.Dal\SqlHelper.cs:12
   Tom.Bll.News.News_Select(News_List obj) in D:\AEPD\Tom.Bll\News.cs:50
   Jerry.UI.News1.BindData() in D:\AEPD\Jerry.UI\News.aspx.cs:40
   Jerry.UI.News1.Page_Load(Object sender, EventArgs e) in D:\AEPD\Jerry.UI\News.aspx.cs:21
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   Jerry.UI.Base.CmsPage.OnLoad(EventArgs e) in D:\AEPD\Jerry.UI\Base\CmsPage.cs:48
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4718.0