官方文档
原文件如下图,替换第一行的新编码,把41230441044替换为41230441000
替换代码如下:
PdfDocument doc = new PdfDocument();
//加载PDF文档
doc.LoadFromFile("Input.pdf");
PdfTextReplaceOptions textReplaceOptions = new PdfTextReplaceOptions();
textReplaceOptions.ReplaceType = PdfTextReplaceOptions.ReplaceActionType.IgnoreCase;
textReplaceOptions.ReplaceType = PdfTextReplaceOptions.ReplaceActionType.WholeWord;
textReplaceOptions.ReplaceType = PdfTextReplaceOptions.ReplaceActionType.AutofitWidth;
PdfPageBase page = doc.Pages[0];
PdfTextReplacer textReplacer = new PdfTextReplacer(page);
textReplacer.Options = textReplaceOptions;
textReplacer.ReplaceAllText("41230441044", "41230441000");
doc.SaveToFile("ReplaceTextInPage.pdf");
doc.Dispose();
替换后格式乱了,如下图
解决方法如下,作用PdfTextFinder
PdfDocument doc = new PdfDocument();
//加载PDF文档
doc.LoadFromFile("Input.pdf");
PdfPageBase page = doc.Pages[0];
PdfTextFinder finder = new PdfTextFinder(page);
var finds = finder.Find("41230441044");
foreach (var textFragment in finds)
{
textFragment.ApplyRecoverString("41230441000", Color.White, true);
}
doc.SaveToFile("ReplaceTextInPage.pdf");
doc.Dispose();