實現(xiàn)功能：

     datatable綁定comboBox,在下拉菜單中顯示對應數(shù)據(jù)

實現(xiàn)方法：

     1,、生成datatable,，并為combox綁定數(shù)據(jù)源：

            comboBox1.DataSource = dt1;
            comboBox1.DisplayMember = "用戶編碼";
            comboBox1.ValueMember = "ID";
            this.comboBox1.SelectedIndex = -1;

    2、在combox的SelectedIndexChanged事件中添加如下方法：

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int iCurrentIndex = this.comboBox1.SelectedIndex;
            if (iCurrentIndex < 0) return;

            DataRow dr = dt1.Rows[iCurrentIndex];
            iID = Int32.Parse(dr["ID"].ToString());

        }

另：如果textBox也想綁定該數(shù)據(jù)源,，實現(xiàn)連動（如輸入編碼顯示對應名稱）

    3,、在textBox的TextChanged事件中添加如下方法：

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            string strUserNo = this.textBox1.Text.Trim();
            for (int i = 0; i < dt1.Rows.Count; i++)
            {
                if (dt1.Rows[i]["用戶編碼"].ToString() == strUserNo)
                {
                    this.comboBox1.SelectedIndex = i;
                    break;
                }
                else
                {
                    this.comboBox1.SelectedIndex = -1;
                }
            }
        }