After deleting records then trying to save dataset, it gives me this error:

Deleted row information cannot be accessed through the row.

Here is the code using Infragistics UltraGrid control:

RowsCollection allRows;
allRows = this.grdDepartments.Rows;
if (allRows.Count > 0) {
   for (int i = 0; i < allRows.Count; i++) {
       UltraGridRow row = allRows[i];
       if ((bool)row.Cells["DeleteMarker"].Value == true)
           row.Delete(false);
   }
}

this.oMscDepartments.SaveDataSet();

The deletion process have no problem because the error only show up when SaveDataSet() method is called.

Please assist...