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 75:             SqlDataReader sdr_update = scom_update.ExecuteReader();
Line 76:             sdr_update.Read();
Line 77:             Int32 countupdate = Int32.Parse(sdr_update["bazdid"].ToString()) + 1;
Line 78:             sdr_update.Close();
Line 79:             string strc2 = "update products set bazdid=@b where id=@iiid;";

Source File: c:\inetpub\vhosts\babest.ir\httpdocs\productdetails.aspx.cs    Line: 77

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) +1768902
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +49
   System.Data.SqlClient.SqlDataReader.GetValueInternal(Int32 i) +32
   System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +76
   System.Data.SqlClient.SqlDataReader.get_Item(String name) +28
   productdetails.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\babest.ir\httpdocs\productdetails.aspx.cs:77
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   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:4.8.4494.0