saving a report copy to the computer

I found the solution :)

using System.IO;
using System.Data.Sql;
using System.Data.SqlClient;
using Microsoft.Reporting.WinForms;

Warning[] warnings;
string[] streamids;
string mimeType;
string encoding;
string extension;

byte[] bytes = reportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension, out streamids, out warnings);

FileStream fs = new FileStream(@"D:\Report" + sales_code + ".pdf", FileMode.Create);

fs.Write(bytes, 0, bytes.Length);

fs.Close();