如何将DataTable绑定到MS图表

this is myCode:

这是myCode：

 private void frmChart_Load(object sender, EventArgs e)
    {
        string cs = ConfigurationManager.ConnectionStrings["dbcs"].ConnectionString;
        using (SqlConnection Con = new SqlConnection(cs))
        {
            SqlCommand cmdSum = new SqlCommand("Select distinct(UserName),sum(Value) from mytable  group by UserName",Con);
            Con.Open();
            SqlDataReader reader = cmdSum.ExecuteReader();
            chart1.DataBindTable(reader,"sum(Value)");
        }
        foreach (Series series in chart1.Series)
        {
            series.CustomProperties = "DrawingStyle=LightToDark";
        }

    }
 private void frm