private void bindsender()
{
PurchaseBillDAL objBill = new PurchaseBillDAL();
DataTable dt = objBill.BindSenderForPurchaseBill(ApplicationFunction.ConnectionString());
ddlPartyName.DataSource = dt;
ddlPartyName.DataTextField = "Acnt Name";
ddlPartyName.DataValueField = "Acnt Idno";
ddlPartyName.DataBind();
ddlPartyName.Items.Insert(0, new System.Web.UI.WebControls.ListItem("--Select--", "0"));
}