DataTable dt = new DataTable();
            comboBox1.DataSource = dt;
            comboBox1.ValueMember = "隱藏的列";
            comboBox1.DisplayMember = "要顯示的列";

------解决方案--------------------
探讨


for循环添加
cmb.Items.Add("你要加的东西");


------解决方案--------------------
探讨


C# code

            DataTable dt = new DataTable();
            comboBox1.DataSource = dt;
            comboBox1.ValueMember = "隱藏的列";
            comboBox1.DisplayMember = "要顯示的列";


------解决方案--------------------
C# code

comboBox1.DataSource = dt;//dt就是你从数据库查询出来的结果集
comboBox1.ValueMember = "xxx";//xxx是指实际的值
comboBox1.DisplayMember = "yyy";//yyy是指显示的值