我試圖創建將直接發送PDF文件到我的打印機的方法(導致出現打印對話框)。iTextSharp的PDF打印
下面是我一直在努力的代碼 - 大部分在論壇here找到。如果我使用iTextSharp的創建一個新的PDF文檔,但只要我嘗試一些JavaScript注入到一個已經存在的文件,我調用print()
方法說
對象不支持的時候得到一個例外,它工作正常屬性或方法 '打印'
<script type="text/javascript">
function load() {
try {
var x = document.getElementById("frame1");
x.print();
}
catch (err) {
}
}
</script>
<body onload="load();">
<form id="form1" runat="server">
<div>
<iframe id="frame1" src="C:/1686850_1.pdf" runat="server" frameborder="0" style="height: 0px; width: 0px;" />
</div>
</form>
</body>
</html>
.CS文件
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
public partial class Print : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SetPDF(File.ReadAllBytes("C:\\1686850.pdf"), "C:\\1686850_1.pdf"); //test files
}
private void SetPDF(byte[] file, string outputPath)
{
PdfReader reader = new PdfReader(file);
int pageCount = reader.NumberOfPages;
Rectangle pageSize = reader.GetPageSize(1);
Document pdf = new Document(pageSize);
PdfWriter writer = PdfWriter.GetInstance(pdf, new FileStream(outputPath, FileMode.Create));
pdf.Open();
//This action leads directly to printer dialogue
PdfAction jAction = PdfAction.JavaScript("this.print(true);\r", writer);
writer.AddJavaScript(jAction);
//Omitting this loop and simply adding some text to the file produces the behavior I want.
for (int i = 0; i < pageCount; i++)
{
pdf.NewPage();
PdfImportedPage page = writer.GetImportedPage(reader, i + 1);
writer.DirectContent.AddTemplate(page, 0, 0);
}
pdf.Close();
//Open the pdf in the frame
frame1.Attributes["src"] = outputPath;
}
}
感謝的人,它的工作原理..我複製此代碼'//這個動作直接導致打印機對話 VAR jAction = PdfAction.JavaScript (「this.print(true); \ r」,writer); writer.AddJavaScript(jAction);' – 2015-04-23 08:40:47