Crystal report load report error

when i click on button then an error occure Load report failed.
My code is:
ReportDocument cryrpt = new ReportDocument(); private void button1_Click(object sender, EventArgs e) { SqlConnection sqlcon = new SqlConnection("Data Source=.\\sqlexpress;Initial Catalog=Company;Integrated Security=True"); SqlDataAdapter dap = new SqlDataAdapter("select * from tbl_addemp", sqlcon); DataSet ds = new DataSet(); dap.Fill(ds, "tbl_addemp"); cryrpt.Load("~/CrystalReport1.rpt"); cryrpt.SetDataSource(ds); crystalReportViewer1.ReportSource = cryrpt; }