无法在C＃中将数据集分配给ReportDataSource

    private void Form1_Load(object sender, EventArgs e)
    {
        // Sql Connection Object
        SqlConnection con = new SqlConnection(@\"Data Source=SEVEN01-PC\\SQLEXPRESS;Initial Catalog=RealWorld;Integrated Security=SSPI;\");

        // Sql Command Object
        SqlCommand cmd = new SqlCommand(\"Select * from ProductReorder\", con);

        try
        {
            // Open Connection
            con.Open();

            // Dataset Object
            DataSet ds = new DataSet();

            // Sql DataReader Object
            SqlDataReader reader = cmd.ExecuteReader();

            // Fill Data Set
            ds.Tables[0].Load(reader);

            // Close Sql Datareader and Connection Objects
            reader.Close();
            con.Close();

            //provide local report information to viewer
            reportViewer1.LocalReport.ReportEmbeddedResource = \"ProductReorder.rptProductReorder.rdlc\";

            //prepare report data source
            ReportDataSource rds = new ReportDataSource();
            rds.Name = \"dsProductReorder_dtProductReorder\";
            rds.Value = ds.Tables[0];
            reportViewer1.LocalReport.DataSources.Add(rds);

            //load report viewer
            this.reportViewer1.RefreshReport();
        }
        catch (Exception ex)
        {

            MessageBox.Show(ex.Message);
        }
    }