اینم جواب ندارد
con.Open(); DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter("Select * from Tsaham WHERE kod='" + kodTextBox .Text+ "'", con);
da.Fill(dt);
con.Close();
Freport df = new Freport();
ReportParameter[] param = new ReportParameter[1];
param[0] = new ReportParameter("Image", Application.StartupPath + @"\picture\" + kodTextBox.Text + ".png");
df.reportViewer1.LocalReport.SetParameters(param);
df.reportViewer1.LocalReport.DataSources.Clear();
df.reportViewer1.LocalReport.ReportEmbeddedResourc e = "Zaiton.Report4.rdlc";
ReportDataSource rds = new ReportDataSource("DataSet1", dt);
df.reportViewer1.LocalReport.DataSources.Add(rds);
df.Show();