从列表框选择可以在datagridview中编辑时如何使用列表框中显示的数据库表

Question

当从列表框选择可以在datagridview中编辑时，C＃如何使用列表框中显示的数据库表

private void button4_Click(object sender, EventArgs e)
{            
    SqlConnection conn = new SqlConnection(this.connetionString);
    string sql = @"SELECT * from amd_err;";
    SqlDataAdapter sda = new SqlDataAdapter(sql, conn);
    DataTable dt = new DataTable();         
    sda.Fill(dt);

    this.listBox1.DataSource = result;
    this.listBox1.DataSource = dt;       
    listBox1.DisplayMember = "amd_err";