HBM.CustomerManagement.Customer.SelectGroupByGroupId C# (CSharp) Method

        public DataSet SelectGroupByGroupId(int groupId)
        {
            return (new CustomerDAO()).SelectGroupByGroupId(groupId);
        }

        private void ViewData()
        {
            try
            {
                CustMan.Customer CustomerObj = new CustMan.Customer();
                CustomerObj.CustomerId = Int32.Parse(hdnCustomerId.Value.Trim() == String.Empty ? "0" : hdnCustomerId.Value.Trim());

                if (CustomerObj.CustomerId > 0)
                {
                    CustomerObj.CompanyId = Master.CurrentCompany.CompanyId;
                    CustomerObj           = CustomerObj.Select();

                    if (CustomerObj.IsGroupCustomer.HasValue && CustomerObj.IsGroupCustomer == true)
                    {
                        LoadGroupCustomers(CustomerObj);
                    }
                    else
                    {
                        LoadIndividualCustomers(CustomerObj);
                    }
                }
                else
                {
                    CustMan.Customer CustomerObj1 = new CustMan.Customer();
                    dsData = CustomerObj1.SelectGroupByGroupId(0);
                    gvGroupMembers.DataSource = dsData;
                    gvGroupMembers.DataBind();
                    dsData.Tables[0].PrimaryKey = new DataColumn[] { dsData.Tables[0].Columns["CustomerId"] };
                    Session[Constants.SESSION_GROUPCUSTOMERS] = dsData;
                }
            }
            catch (System.Exception)
            {
            }
        }