protected void deliverSearchB_OnClick(object sender, EventArgs e)
{
BlUser user = (BlUser)Session["user"];
//get input values
string searchBys = DeliverSearchBy.Items[DeliverSearchBy.SelectedIndex].Value;
string value = DeliverSearchVal.Text;
//get data
DataTable customers = user.DeliversSearch($"(Users.{searchBys}='{value}')");
bool isExist = BindTable(customers, DeliveriesTable);
DeliverMSG.Text = !isExist ? "Not valid search value" : "";//error massage
}
