using System.Data.SqlClient;

            SqlConnection conn = new SqlConnection();
            conn.ConnectionString = "Server=.;User Id=sa;pwd=sa;database=db_PMS";
            conn.Open();
            SqlCommand cmd = new SqlCommand("select * from tb_pay", conn);
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataSet ds = new DataSet();
            da.Fill(ds);
            listBox1.DataSource = ds.Tables[0].DefaultView;
            listBox1.DisplayMember = " 学生姓名";
            conn.Close()
这个为什么显示不是数据，把listBox1.DataSource = ds.Tables[0].DefaultView这句里的0改成其它数字就出错.