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System.IndexOutOfRangeException on a webfarm

  • Artikel

Here is another issue that a customer had that I thought would be helpful to others.

Problem

The customer said they are getting Exception type: System.IndexOutOfRangeException every minute or so when accessing their web site.  The error looks like:

 System.IndexOutOfRangeException: Index was outside the bounds of the array.
  at System.Web.UI.WebControls.GridView.LoadControlState(Object savedState)
  at System.Web.UI.Control.LoadControlStateInternal(Object savedStateObj)
  at System.Web.UI.Page.LoadAllState()
  at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Resolution

This is trying to load ViewState.  ViewState is not necessarily compatible between different versions of the runtime, including service pack changes. A given application, even if distributed in a web farm, must be running on the same exact runtime version on all servers.  This includes the bit-ness.  So they all need to be x86 or x64 as on the same version (Service Pack, etc).

Comments

  • Anonymous
    August 26, 2008
    It gives An Exception for System.IndexOutOfRangeException: Sql Field IS int also. Could You Help ME totalsponsoe = Convert.ToInt32(sdr["AppMstSponsorTotal"]);

  • Anonymous
    September 16, 2008
    There's probably a typo in your field name.

  • Anonymous
    September 16, 2008
    Good point Rob, remember that the SQL field names are case sensative.

  • Anonymous
    October 13, 2008
    my problem is similar to Ramendra  Kumar, but i only get the System.IndexOutOfRangeException if i try to call <b>char</b> or <b>text</b> data type  from SQL. other fields using int or varchar no problem. i've checked over and over the field name. bceData.Answer = sqlDataReader["AnswerField"].ToString(); the "AnswerField" is <b>text</b> datatype in SQL. can you help me please? i have no permission to alter the database.

  • Anonymous
    October 15, 2008
    alright, please forget my previous comment :D the problem was in the stored procedure :D now everything is solved :D i'm still learning anyway :D

  • Anonymous
    July 27, 2009
    sql = "select Rlens_code,Llens_code from Spects where " & oprator & " = '" & Search & "'"        CM = New SqlCommand(sqlstr, frmMasterObj.cn)        Dim dr1 As SqlDataReader = CM.ExecuteReader        If dr1.HasRows = True Then            While (dr1.Read)                If dr1("Llens_code") = "" Then                    lblRtLensRef.Text = ""                Else                    lblLtLensRef.Text = dr1("Llns_code").ToString()                End If                If dr1("Rlens_code") = "" Then                    lblLtLensRef.Text = ""                Else                    lblRtLensRef.Text = dr1("Rlens_code").ToString()                End If            End While            dr1.Close()        End If in this code if some value is null so how can we catch that null value