城杆

  ArrayList arList=new ArrayList();
            arList.Add(new DictionaryEntry("1", "單張立帳"));
            arList.Add(new DictionaryEntry("2", "不立帳"));
            arList.Add(new DictionaryEntry("3", "開出發票才立帳"));

            this.txt_lizhang.DisplayMember = "Value";
            this.txt_lizhang.ValueMember = "Key";

            this.txt_lizhang.DataSource = arList;
            txt_lizhang.SelectedValue = "3";