C#

//user authenticate
private bool Authenticate(string userName, string password, string domain = null)
{
    bool authentic = false;
    try
    {
        using (PrincipalContext context = new PrincipalContext(ContextType.Domain))
        {
            authentic = context.ValidateCredentials(userName, password);
        }
    }
    catch (DirectoryServicesCOMException) { }
    return authentic;
}

using (new Impersonator(txtGebruiker.Text, txtDomein.Text, txtPw.Text))
{
    string profile = GetProfilePath(txtProfiel.Text);
    txtLog.Text = profile;
}

protected void btnAuthenticateAndPrint_Click(object sender, EventArgs args)
    {
        try
        {
            
            //Getting Values from grid
            LinkButton lb = (LinkButton)sender;
            GridViewRow row = (GridViewRow)lb.NamingContainer;
            Label lbOrderID = row.FindControl("lbOrderID") as Label;
            int OrderId = Convert.ToInt32(lbOrderID.Text);
            da = new SqlDataAdapter("Get_PODetails", con);
            da.SelectCommand.CommandType = CommandType.StoredProcedure;
            da.SelectCommand.Parameters.AddWithValue("@MPDI_ID", OrderId);
            ds = new DataSet();
            da.Fill(ds, "PO");
            if (ds.Tables["PO"].Rows.Count > 0)
            {
                lblPOId.Text=ds.Tables["PO"].Rows[0]["MPDI_ID"].ToString();
                lblVendid.Text = ds.Tables["PO"].Rows[0]["MVDI_ID"].ToString();
                lblBranch.Text = ds.Tables["PO"].Rows[0]["MBRI_ID"].ToString();
                lblDate.Text = Convert.ToDateTime(ds.Tables["PO"].Rows[0]["MPDI_Date"]).ToString("dd-MM-yyyy");
            }
 
            //SSRS Report Print
            rs = new RSWebService.ReportingService2005();
            rsExec = new REWebService.ReportExecutionService();
            rs.Credentials = System.Net.CredentialCache.DefaultCredentials;
            rsExec.Credentials = System.Net.CredentialCache.DefaultCredentials;
            rs.Url = "http://localhost/ReportServer/ReportService2005.asmx";
            rsExec.Url = "http://localhost/ReportServer/ReportExecution2005.asmx";
            byte[] Sendresults = null;
            byte[] bytes = null;
            string historyID = null;
            string deviceInfo = @"<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>";
            string format = "PDF";
            string encoding = null;
            string mimeType = null;
            string extension = null;
            REWebService.Warning[] warnings = null;
            string[] streamIDs = null;
            string _reportName = @"/FIMO GOF Assets Reports/PURCHASE ORDER";
            REWebService.ExecutionInfo ei = rsExec.LoadReport(_reportName, historyID);
            REWebService.ParameterValue[] parameters = new REWebService.ParameterValue[4];
            parameters[0] = new REWebService.ParameterValue();
            parameters[0].Name = "MVDI_ID";
            parameters[0].Value = lblVendid.Text;
            parameters[1] = new REWebService.ParameterValue();
            parameters[1].Name = "MBRI_ID";
            parameters[1].Value = lblBranch.Text;
            parameters[2] = new REWebService.ParameterValue();
            parameters[2].Name = "MPDI_Date";
            parameters[2].Value = lblDate.Text;
            parameters[3] = new REWebService.ParameterValue();
            parameters[3].Name = "ReportParameter1";
            parameters[3].Value = lblPOId.Text;
            rsExec.SetExecutionParameters(parameters, "en-us");
            Sendresults = rsExec.Render(format, deviceInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);
            MemoryStream ms = new MemoryStream(Sendresults);
 

            //To create a PDF
if (format == "PDF")
            {
                Response.ContentType = "application/pdf";
                Response.AddHeader("Content-disposition", "inline;filename=output.pdf");
                Response.AddHeader("Content-Length", Sendresults.Length.ToString());
            }
            Response.OutputStream.Write(Sendresults, 0, Sendresults.Length);
            Response.OutputStream.Flush();
            Response.OutputStream.Close();
 
        }
        catch(Exception Ex)
        {
            throw Ex;
        }
    }