Средство просмотра отчетов rdlc на языке C#

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private void button4_Click(object sender, EventArgs e)
        {
			Form3 frm = new Form3();
			
			DataSet1 myDataSet = new DataSet1();
			DataTable dataTable = myDataSet._myTable;
			 for (int i = 1; i <= n; i++)
                {

                    DataRow drow = dataTable.NewRow();
                    if (true)
                    {

                        drow["proid"] = "0001";
                        drow["proname"] = "data2";
                        drow["cost"] = "200";
                        drow["code"] = "0123";
                        drow["shopname"] = "Shop Name";
                    }
                    
                    dataTable.Rows.Add(drow);
                }
			ReportDataSource datasource = new ReportDataSource("mydata", (DataTable)dataTable) ;
            
            frm.reportViewer1.LocalReport.DataSources.Clear();
            frm.reportViewer1.LocalReport.DataSources.Add(datasource);
            frm.reportViewer1.RefreshReport();
			
            frm.Text = "reporting";
            frm.StartPosition = FormStartPosition.CenterScreen;
            frm.ShowDialog();
		}
<pre>

What I have tried:

data not show in the report viewer rdlc (c# )

https://2.bp.blogspot.com/-Cw76wxrVtM4/Wfv1tyTikTI/AAAAAAAAAqk/-WS3LidgkegsUuhvnDlw30hnM-oWCeKngCLcBGAs/s320/ppp.png

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