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 34:         {
Line 35:             rd.Read();
Line 36:             res = rd[NameField].ToString();
Line 37:             rd.Close();
Line 38:         }

Source File: g:\ArcSite\ARCNew\App_Code\Resechers.cs    Line: 36

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) +2734911
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +54
   System.Data.SqlClient.SqlDataReader.GetValueInternal(Int32 i) +41
   System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +92
   Resechers.getNameById(SqlConnection conn, String NameField, String TableName, String IdField, String IdValue) in g:\ArcSite\ARCNew\App_Code\Resechers.cs:36
   Researchers_ResDetailCtrl.Page_Load(Object sender, EventArgs e) in g:\ArcSite\ARCNew\Researchers\ResDetailCtrl.ascx.cs:138
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3429.0