直接通过代码打开生成的pdf文件，无需保存到磁盘 [英] Open Generated pdf file through code directly without saving it onto the disk

问题描述

我使用 Sharepoint 2010 并且我正在开发一个 Web 部件，其中在按钮单击事件中，需要生成并直接打开 pdf 文件.不应该保存到磁盘上.我试过下面的代码

I use Sharepoint 2010 and I am developing a web part where on a button click event, a pdf file needs to be generated and opened directly. Should not be saving onto the disk. I tried the below code

 protected void Button1_OnClick(object sender, EventArgs e)
    {
        Document myDoc = new Document(PageSize.A4.Rotate());
        try
        {
            PdfWriter.GetInstance(myDoc, new FileStream(@"C:DirectoryTest.pdf", FileMode.Create));
            myDoc.Open();
            myDoc.Add(new Paragraph("Hello World"));
        }
        catch (DocumentException ex)
        {
            Console.Error.WriteLine(ex.Message);
        }
        myDoc.Close();
    }

我也尝试了下面的代码，它也在服务器上生成了我不想要的文件.

I also tried the below code which also generates the file on the Server which I dont want.

  Document document = new Document(PageSize.A4);
        PdfWriter.GetInstance(document, new FileStream(HttpContext.Current.Server.MapPath("~/Test.pdf"), FileMode.Create));
        document.Open();
        var WelcomePara = new Paragraph("Hello World");
        document.Add(WelcomePara);
        document.Close();

这是在桌面上创建pdf文件，我需要以pdf格式打开它.有人可以帮我吗.

This one creates the pdf file on the desktop, I need it to be opened in the pdf format.Can someone help me please.

推荐答案

我终于让它工作了.

  using (var ms = new MemoryStream())
      {
          using (var document = new Document(PageSize.A4,50,50,15,15))
          {
              PdfWriter.GetInstance(document, ms); 
              document.Open();
              document.Add(new Paragraph("HelloWorld"));
              document.Close();
          }
          Response.Clear();
          //Response.ContentType = "application/pdf";
          Response.ContentType = "application/octet-stream";
          Response.AddHeader("content-disposition", "attachment;filename= Test.pdf");
          Response.Buffer = true; 
          Response.Clear();
          var bytes = ms.ToArray();
          Response.OutputStream.Write(bytes, 0, bytes.Length);
          Response.OutputStream.Flush();
      } 

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