itextsharp生成pdf后的直接打印问题

原文 itextsharp生成pdf后的直接打印问题

小弟这两天用itextsharp生成pdf文档，生成的pdf可以直接保存在指定路径的文件夹下，可是user不想保存，想要点一下button，就可以直接打印，我搞了半天也没找到合适的方法，还希望有做过这方面的，给些建议．多谢多谢啦

我的代码是这样的： 　iTextSharp.text.Rectangle page = new Rectangle(683,850);

　iTextSharp.text.Document document = new iTextSharp.text.Document(page, 71, 43, 60, 28);

try

{

// and directs a PDF-stream to a file

PdfWriter.GetInstance(document, new FileStream("C:\\" + DateTime.Now.ToString("yyyyMMdd") +
　".pdf", FileMode.Create));

document.Open();

　　　　　　　　//我增加的文档内容部分

}

catch (Exception e)

{

}

// close the document

document.Close();

}

解决方法:

我把我的解决办法也贴出来吧，

１，把生成ＰＤＦ文档到MemoryStream.

MemoryStream pdfdata = new MemoryStream();

PdfWriter writer = PdfWriter.GetInstance(document, pdfdata);

2,在PdfWriter中加javescript．

StringBuilder script = new StringBuilder();

script.Append("this.print({bUI: true,bSilent: true,bShrinkToFit: false});");

writer.ViewerPreferences = PdfWriter.HideMenubar | PdfWriter.HideToolbar | PdfWriter.HideWindowUI;

writer.AddJavaScript(script.ToString());

３，输出到客户端缓存．

protected void submit_Click(object sender, EventArgs e)

{

MemoryStream PDFData =１中的返回值;

Response.Clear();

Response.ClearContent();

Response.ClearHeaders();

Response.ContentType = "application/pdf";

Response.Charset = string.Empty;

Response.Cache.SetCacheability(System.Web.HttpCacheability.Public);

Response.AddHeader("Content-Disposition",

"inline; filename=" + Title.Replace(" ", "").Replace(":", "-") + ".pdf");

Response.OutputStream.Write(PDFData.GetBuffer(), 0, PDFData.GetBuffer().Length);

Response.OutputStream.Flush();

Response.OutputStream.Close();

}

4,我在页面上放一个iframe(width=0,height=0),就是让他不可见，让pdf文档在他下面打开，就会执行打印动作．

<form id="form1" runat="server" target="iframe1">

<div><center>

<br />

<asp:Button ID="submit" runat="server" OnClick="submit_Click" Text="Print PO" />

</center></div>

</form>

<iframe name="iframe1" width="0" height="0">

</iframe>

希望对想和我实现一样功能的朋友有些参考价值．