Server Error in '/' Application.

Invalid attempt to read when no data is present.

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: Invalid attempt to read when no data is present.

Source Error:


Line 116:        reader.Read();
Line 117:        data = new Khoitao_NDHD();
Line 118:        data.id_ndhd = reader.GetInt32(0);
Line 119:        data.id_menu1 = reader.GetInt32(1);
Line 120:        data.id_menu2 = reader.GetInt32(2);

Source File: d:\Wep_KCN\App_code\Noidung_Hoidap\Capnhat_NDHD.cs    Line: 118

Stack Trace:


[InvalidOperationException: Invalid attempt to read when no data is present.]
   System.Data.SqlClient.SqlDataReader.CheckDataIsReady(Int32 columnIndex, Boolean allowPartiallyReadColumn, Boolean permitAsync, String methodName) +2728196
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +55
   System.Data.SqlClient.SqlDataReader.GetInt32(Int32 i) +45
   Capnhat_NDHD.SelectID(Int32 id_ndhd) in d:\Wep_KCN\App_code\Noidung_Hoidap\Capnhat_NDHD.cs:118
   View_Chitiet_Hoidap.select_idLV() in d:\Wep_KCN\View_Chitiet_Hoidap.aspx.cs:74
   View_Chitiet_Hoidap.Page_Load(Object sender, EventArgs e) in d:\Wep_KCN\View_Chitiet_Hoidap.aspx.cs:16
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0