使用iTextSharp更改PDF的字体 [英] Changing font of PDF using iTextSharp
本文介绍了使用iTextSharp更改PDF的字体的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在C#中使用iTextSharp更改现有PDF文件的字体?
How can I change the font of a existing PDF file with iTextSharp in C#?
我想将整个文档字体更改为一个,例如Arial
I want to change the whole documents font into one e.g. Arial
推荐答案
最后我解决了这个问题。
以下代码将打开一个现有的Pdf文件,并根据我的预期将其所有字体更改为盲文。
Finally I solved the problem. The following code will open an existing Pdf file and will change all its font to 'Braille' as per my expectation.
private static void ChangeFont()
{
string strFile = @"E:\\xyz.pdf";
string OutputFile = @"E:\\xyz1.pdf";
PdfReader pdfReader = new PdfReader(strFile);
//Get first page,Generally we get font information on first page,however we can loop throw pages e.g for(int i=0;i<=pdfReader.NumberOfPages;i++)
PdfDictionary cpage = pdfReader.GetPageN(1);
if (cpage == null)
return;
PdfDictionary dictFonts = cpage.GetAsDict(PdfName.RESOURCES).GetAsDict(PdfName.FONT);
if (dictFonts != null)
{
foreach (var font in dictFonts)
{
var dictFontInfo = dictFonts.GetAsDict(font.Key);
if (dictFontInfo != null)
{
foreach (var f in dictFontInfo)
{
//Get the font name-optional code
var baseFont = dictFontInfo.Get(PdfName.BASEFONT);
string strFontName = System.Text.Encoding.ASCII.GetString(baseFont.GetBytes(), 0,
baseFont.Length);
//
//Remove the current font
dictFontInfo.Remove(PdfName.BASEFONT);
//Set new font eg. Braille, Areal etc
dictFontInfo.Put(PdfName.BASEFONT, new PdfString("Braille"));
break;
}
}
}
}
//Now create a new document with updated font
using (FileStream FS = new FileStream(OutputFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (Document Doc = new Document())
{
using (PdfCopy writer = new PdfCopy(Doc, FS))
{
Doc.Open();
for (int j = 1; j <= pdfReader.NumberOfPages; j++)
{
writer.AddPage(writer.GetImportedPage(pdfReader, j));
}
Doc.Close();
}
}
}
pdfReader.Close();
}
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