Hi,

 I am using infragistics ultrawingrid v 6.2 in my desktop application.

Loading the data from sql to grid. I am using the background thread to load the data in the grid due to large amount of data. While loading the problem i am facing are

 on Grid_InitializeRow

 int iIndex = e.Row.ListIndex + 1;

e.Row.Cells["INo"].Value = e.Row.ParentRow.Cells["INo"].Value.ToString() + "." + iIndex.ToString();

e.Row.RowSelectorAppearance.Reset();

e.Row.Update();

I can’t see anything wrong in this code

Getting Error:

 Unable to update the row: value cannot be null, paramter name:Key

 when I break the record and load the data into the grid , following error happens

 Unable to update the row: DataTable internal index is corrupted: '5'

 Unable to update the row:DataTable internal index is corrupted: '8'

 Unable to update the row:Object reference not set to an instance of an object

 i was tried to catch up the exception .. like try-catch in row. Grid_InitializeRow .. but that error is not catchable. and thowing exception are

 at Infragistics.Win.UltraWinGrid.UltraGridCell.SetValue(Object value, Boolean suppressErrorMessagePrompt, Boolean fireInitializeRow, Boolean throwExceptionOnError)

   at Infragistics.Win.UltraWinGrid.UltraGridCell.SetValue(Object value, Boolean suppressErrorMessagePrompt, Boolean fireInitializeRow)

   at Infragistics.Win.UltraWinGrid.UltraGridCell.set_Value(Object value)

   at Verdi.Client.Controls.Browser.ReportManager.ReportBase.Grid_InitializeRow(Object sender, InitializeRowEventArgs e)

 can any one advice or help on above issue.

Thanks

Greetings

Srini