combobox

 

       protected   void  bind_type()
         ... {
            StuFeeSet sfs = new StuFeeSet();
            DataSet ds = sfs.getAllFeeTye();
            this.cbType.DataSource = ds.Tables[0];
            this.cbType.DisplayMember ="类型";
            this.cbType.ValueMember = "id";
        }

this .cbType.SelectedIndex  =   this .cbType.FindString(“正常”);