在c#中使用wkhtmltopdf.exe生成PDF

我正在使用wkhtmltopdf.exe生成PDF，代码如下。

 string url = HttpContext.Current.Request.Url.AbsoluteUri;
        //string[] strarry = sPath.Split('/');
        //int lengh = strarry.Length;
  var pdfUrl = HtmlToPdf(pdfOutputLocation: "~/PDF/", outputFilenamePrefix: "DT", urls: new string[] { url });
        WebClient req = new WebClient();
        HttpResponse response = HttpContext.Current.Response;
        response.Clear();
        response.ClearContent();
        response.ClearHeaders();
        response.Buffer = true;
        Response.ContentType = "application/pdf";
        response.AddHeader("Content-Disposition", "attachment;filename='"" + pdfUrl.ToString().Substring(6) + "'"");
        byte[] data = req.DownloadData(Server.MapPath(pdfUrl.ToString()));
        response.BinaryWrite(data);
        File.Delete(Server.MapPath(pdfUrl.ToString()));
        response.End();

和

  public static string HtmlToPdf(string pdfOutputLocation, string outputFilenamePrefix, string[] urls,
 string[] options = null,
 string pdfHtmlToPdfExePath = "C:''Program Files''wkhtmltopdf''wkhtmltopdf.exe")
    {
        string urlsSeparatedBySpaces = string.Empty;
        try
        {
            //Determine inputs
            if ((urls == null) || (urls.Length == 0))
                throw new Exception("No input URLs provided for HtmlToPdf");
            else
                urlsSeparatedBySpaces = String.Join(" ", urls); //Concatenate URLs
            string outputFolder = pdfOutputLocation;
            string outputFilename = outputFilenamePrefix + "_" + DateTime.Now.ToString("yyyy-MM-dd-hh-mm-ss-fff") + ".PDF"; // assemble destination PDF file name
            var p = new System.Diagnostics.Process()
            {
                StartInfo =
                {
                    FileName = pdfHtmlToPdfExePath,
                    Arguments = ((options == null) ? "" : String.Join(" ", options)) + " " + urlsSeparatedBySpaces + " " + outputFilename,
                    UseShellExecute = false, // needs to be false in order to redirect output
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    RedirectStandardInput = true, // redirect all 3, as it should be all 3 or none
                    WorkingDirectory = HttpContext.Current.Server.MapPath(outputFolder)
                }
            };
            p.Start();
            // read the output here...
            var output = p.StandardOutput.ReadToEnd();
            var errorOutput = p.StandardError.ReadToEnd();
            // ...then wait n milliseconds for exit (as after exit, it can't read the output)
            p.WaitForExit(60000);
            // read the exit code, close process
            int returnCode = p.ExitCode;
            p.Close();
            // if 0 or 2, it worked so return path of pdf
            if ((returnCode == 0) || (returnCode == 2))
                return outputFolder + outputFilename;
            else
                throw new Exception(errorOutput);

            //Response.ContentType = "application/pdf";
            //Response.AddHeader("content-length", theData.Length.ToString());
            //if (Request.QueryString["attachment"] != null)
            //    Response.AddHeader("content-disposition", "attachment; filename=ExampleSite.pdf");
            //else
            //    Response.AddHeader("content-disposition", "inline; filename=ExampleSite.pdf");
            //Response.BinaryWrite(theData);
            //HttpContext.Current.ApplicationInstance.CompleteRequest();
        }
        catch (Exception exc)
        {
            throw new Exception("Problem generating PDF from HTML, URLs: " + urlsSeparatedBySpaces + ", outputFilename: " + outputFilenamePrefix, exc);
        }
    }

从上面的代码，PDF生成良好。但我有两个页面与登录和注销用户相同的URL。例如，让我们说www.xyz/pdf/brason。这个相同的URL用于登录和注销用户，但内容将根据用户登录或注销而不同。

现在当我登录并尝试使用上面的代码生成PDF时，它总是向我显示登出用户页面的内容。我不知道如何解决这个问题。