protected void Page_Load(object sender, EventArgs e)
{
dsTax.Criteria = BinaryOperator.And(
BinaryOperator.Or(
new BinaryOperator("RowStatus", Utility.Constant.ROWSTATUS_ACTIVE),
new BinaryOperator("RowStatus", Utility.Constant.ROWSTATUS_DEFAULT)
),
//new BinaryOperator("TaxTypeId.Code", "GTGT")).ToString();
new BinaryOperator("TaxTypeId.Code", "VAT")).ToString();
comboVAT.DataBindItems();
}