public Rep客户对账表() { InitializeComponent(); GlobalData.InitForm(this); LoadDataGrid(); BLL.ICustomer bll2 = new BLL.Customer(); List <body.key_value> all_lst = new List <body.key_value>(); all_lst.Add(new body.key_value { t_key = "", t_value = "全部" }); var lst2 = bll2.GetCusGroupList(); if (lst2.Count > 0) { all_lst.AddRange(lst2); } comboBox1.DataSource = all_lst; }