//Constructor called by frmListEDCHeaderSet form after clicked "+" button
 public frmEditEDCHeader(SetHeaderSetInfo set_hs, CheckDuplicateHeaderSet check, bool edit_flag)
 {
     InitializeComponent();
     this.isEdit             = edit_flag;
     this.delgSetHeaderSet   = set_hs;
     this.delgCheckDuplicate = check;
     this.header_set_data    = new cls_EDC_Header();
 }
        //Constructor called by Gateway.cs after clicked the Header Set node
        public frmEditEDCHeader(SetHeaderSetInfo set_hs, CheckDuplicateHeaderSet check, cls_EDC_Header header_set)
        {
            InitializeComponent();
            this.isEdit = true;
            if (header_set.set_name == "")
            {
                this.isCopy = true;
            }

            header_set_data         = header_set;
            item_list               = header_set.head_set;
            this.delgSetHeaderSet   = set_hs;
            this.delgCheckDuplicate = check;
        }