C# winform 报表 问题

 private void button1_Click(object sender, EventArgs e)

        {

            string strcnn = "Data Source=ST101;Initial Catalog=TEST; Integrated Security=SSPI";

            SqlConnection sqlcnn = new SqlConnection(strcnn);

            SqlCommand sqlcmd = new SqlCommand();

            SqlDataReader sqldr;

            DataSet ds = new DataSet1();

            sqlcnn.Open();

            sqlcmd.CommandType = CommandType.Text;

            sqlcmd.Connection = sqlcnn;

            sqlcmd.CommandText = "select * from userdata";



            sqldr = sqlcmd.ExecuteReader();

            ds.Tables["DataTable1"].Load(sqldr);

            ds.Tables.

            sqldr.Close();

            sqlcnn.Close();



            if (ds.Tables[0].Rows.Count == 0)

                MessageBox.Show("error");



            // reportViewer1.LocalReport.ReportPath = "E:\\VS2008\\print\\print\\Report1.rdlc";

            reportViewer1.LocalReport.ReportEmbeddedResource = "print.Report1.rdlc";

            ReportDataSource rds = new ReportDataSource();

            rds.Name = "DataSet1_DataTable1";

            rds.Value = ds.Tables[0];



            reportViewer1.LocalReport.DataSources.Add(rds);



            this.reportViewer1.RefreshReport();

        }

补充：.NET技术 ,  C#

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