protected void cmbCustomerCode_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
        {
            string RefID = cmbCustomerCode.SelectedValue.ToString();
            //Customer Contact
            DataTable dtCustomerContact = objBSS.GetCustomerContact(RefID);

            if (dtCustomerContact.Rows.Count > 0)
            {
                cmbContact.DataSource     = dtCustomerContact;
                cmbContact.DataTextField  = "FullName";
                cmbContact.DataValueField = "ContactID";
                cmbContact.DataBind();
                cmbContact.Items.Insert(0, new RadComboBoxItem("Please Select", "0"));

                //Opportunity Name
                DataTable dtOpportunity = objBSS.GetOpportunity(RefID);
                cmbOpportunity.DataSource     = dtOpportunity;
                cmbOpportunity.DataTextField  = "OppName";
                cmbOpportunity.DataValueField = "OppID";
                cmbOpportunity.DataBind();
                cmbOpportunity.Items.Insert(0, new RadComboBoxItem("Please Select", "0"));
            }
            else
            {
                cmbContact.Items.Clear();
                cmbContact.Items.Insert(0, new RadComboBoxItem("Please Select", "0"));
                cmbOpportunity.Items.Clear();
                cmbOpportunity.Items.Insert(0, new RadComboBoxItem("Please Select", "0"));
            }
        }