public void TransactionDetails()
{
//here we fill transaction details according to order id
Object TransactionSelect = new Object();
TransactionSelect.Order_Id = DdlOrderId.SelectedValue;
DataTable dt = BSLAYER.SelectTransaction(TransactionSelect);
TxtDate.Text = dt.Rows[0]["Transaction_Date"].ToString();
TxtSale.Text = dt.Rows[0]["Transaction_Amount"].ToString();
}