public decimal ExchangeRateIdByCurrencyId(decimal decCurrencyId)
 {
     PurchaseOrderMasterSP SPPurchaseOrderMaster = new PurchaseOrderMasterSP();
      decimal decCount = 0;
      try
      {
          decCount = SPPurchaseOrderMaster.ExchangeRateIdByCurrencyId(decCurrencyId);
      }
      catch (Exception ex)
      {
          MessageBox.Show("PoBll 23:" + ex.Message, "OpenMiracle", MessageBoxButtons.OK, MessageBoxIcon.Information);
      }
      return decCount;
 }