private void TransView_CellValueChanged(object sender, DevExpress.XtraGrid.Views.Base.CellValueChangedEventArgs e)
{
if (TransView.FocusedColumn.FieldName == "TValue")
{
int rHandle = TransView.GetDataSourceRowIndex(TransView.FocusedRowHandle);
Decimal tValue = Convert.ToDecimal(TransView.GetRowCellValue(rHandle - 1, "TValue"));
Decimal tCurValue = Convert.ToDecimal(TransView.GetRowCellValue(TransView.FocusedRowHandle, "TValue"));
if (tCurValue <= tValue)
{
DataRow dr = TransView.GetDataRow(TransView.FocusedRowHandle);
dr["TValue"] = 0;
}
}
}