private void BindISAList()
        {
            DataTable dtGetISAList;

            if (!string.IsNullOrEmpty(txtCustomerId.Value))
            {
                dtGetISAList = customerAccountBo.GetISAListForFolioMapping(int.Parse(txtCustomerId.Value));
                if (dtGetISAList.Rows.Count > 0)
                {
                    ddlCustomerISAAccount.DataSource     = dtGetISAList;
                    ddlCustomerISAAccount.DataValueField = dtGetISAList.Columns["CISAA_accountid"].ToString();
                    ddlCustomerISAAccount.DataTextField  = dtGetISAList.Columns["CISAA_AccountNumber"].ToString();
                    ddlCustomerISAAccount.DataBind();
                    ddlCustomerISAAccount.Items.Insert(0, new System.Web.UI.WebControls.ListItem("Select", "Select"));
                }
                else
                {
                    ddlCustomerISAAccount.Items.Clear();
                    ddlCustomerISAAccount.DataSource = null;
                    ddlCustomerISAAccount.DataBind();
                    ddlCustomerISAAccount.Items.Insert(0, new ListItem("Select", "Select"));
                }
            }
        }