Question

我已经在asp.net上创建了一个Web表单。这个想法是我将一个用WebForm.aspx输入填充的html文件转换为pdf文件，并在按钮单击事件下将其下载。我曾尝试使用IronPDF，但每次单击按钮时，它只会一次又一次加载Web表单。这是代码：

    protected void btnConvertToPdf_Click(object sender, EventArgs e)
    {
        var Render = new IronPdf.HtmlToPdf();
        var PDF = Render.RenderHTMLFileAsPdf("C:/Users/silvio/source/repos/WebFormSilvio/WebFormSilvio/Views/HtmlPage1.html");
        var Outpupath = "C:/Users/silvio/Downloads/Form1.pdf";
        PDF.SaveAs(Outpupath);

    }

    protected void btnUpload_Click(object sender, EventArgs e)
    {
        if (FileUploadCtrl.HasFile)
        {
            try
            {
                string filename = Path.GetFileName(FileUploadCtrl.FileName);
                FileUploadCtrl.SaveAs(Server.MapPath("~/") + filename);
                StatusLabel.Text = "Upload Status: Dosja u ngarkua!";               
            }
            catch(Exception ex)
            {
                StatusLabel.Text = "Upload status: Dosja nuk u ngarkua. Ndodhi nje error:" + ex.Message;
            }
        }
    }
}

Answer 1

我认为您应该为客户端流式传输文件pdf：

  var Render = new IronPdf.HtmlToPdf();
  var PDF = Render.RenderHTMLFileAsPdf("C:/Users/silvio/source/repos/WebFormSilvio/WebFormSilvio/Views/HtmlPage1.html");
  var Outpupath = "C:/Users/silvio/Downloads/Form1.pdf";
  PDF.SaveAs(Outpupath);

  //attach the file to the reponse and return it
  var fileInfo = new System.IO.FileInfo(outputPath);
  Response.ContentType = "application/pdf";
  Response.AddHeader("Content-Disposition", String.Format("attachment;filename=\"{0}\"", outputPath));
  Response.AddHeader("Content-Length", fileInfo.Length.ToString());
  Response.WriteFile(outputPath);
  Response.End();

如果pdf很大，则应使用Response.TransmitFile而不是Response.WriteFile。

如何在C＃中将外部HTML文件转换为PDF

1 个答案: