datatable绑定comboBox显示数据[C#]

 

实现功能：

     datatable绑定comboBox,在下拉菜单中显示对应数据

实现方法：

     1、生成datatable，并为combox绑定数据源：

            comboBox1.DataSource = dt1;
            comboBox1.DisplayMember = "用户编码";
            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也想绑定该数据源，实现连动（如输入编码显示对应名称）

    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]["用户编码"].ToString() == strUserNo)
                {
                    this.comboBox1.SelectedIndex = i;
                    break;
                }
                else
                {
                    this.comboBox1.SelectedIndex = -1;
                }
            }
        }