Hi,

I am using this code but it has a couple of problems: 1. it does not focus to that cell 2. I see some other problems, such that if I move away and then change the cell it does not complain again!

        void gridDiscounts_AfterCellUpdate(object sender, Infragistics.Win.UltraWinGrid.CellEventArgs e)
        {
            this.IsDirty = true;
            if (e.Cell.Column.Key == "Name")
            {
                foreach (Infragistics.Win.UltraWinGrid.UltraGridRow row in this.gridDiscounts.Rows)
                {
                    if (e.Cell.Row != row)
                    {
                        if (e.Cell.Value != null && row.Cells["Name"].Value != null && e.Cell.Value != DBNull.Value
                            && row.Cells["Name"].Value != DBNull.Value)
                        {
                            if (String.Compare(e.Cell.Value.ToString(), row.Cells["Name"].Value.ToString(), true) == 0)
                            {
                                MessageBox.Show("This name already exists");
                                e.Cell.Row.Activate();
                                e.Cell.CancelUpdate();
                                e.Cell.Activate();
                                e.Cell.SelectAll();
                                e.Cell.Value = e.Cell.OriginalValue;
                          
                                break;
                            }
                        }
                    }
                }
            }
        }