C# PDF插入指定位置PDF
时间: 2024-10-09 08:03:46 浏览: 51
在C#中,你可以使用一些第三方库来操作PDF文件并插入内容到特定位置。一个常用的库是iTextSharp,它是一个开源的.NET库,用于处理PDF文档。下面是一个基本步骤,展示了如何使用iTextSharp将文本插入到PDF的指定页和位置:
```csharp
using iTextSharp.text;
using iTextSharp.text.pdf;
// 加载现有的PDF文档
Document document = new Document();
PdfReader reader = PdfReader.Open("source.pdf", PdfReadOptions(pdfVersion: PdfVersion.VERSION_1_4));
// 获取要插入的页面索引
int page = 0; // 更改为你需要插入的页面
float xPosition = 50f; // 插入点的X坐标
float yPosition = 75f; // 插入点的Y坐标
// 创建一个新的PDFStamper对象,用于对PDF进行写入操作
using (PdfStamper stamper = new PdfStamper(reader, new FileStream("destination.pdf", FileMode.Create)))
{
// 获取页面对象
PdfImportedPage pageObject = stamper.GetOverContent(page);
// 使用Font和Paragraph创建文本
Font font = new Font(Font.FontFamily.HELVETICA, 12);
Paragraph paragraph = new Paragraph("要插入的内容", font);
// 将文本画到PDF上
ColumnText.showTextAligned(stamper.GetOverContent(page), Element.ALIGN_LEFT, paragraph, xPosition, yPosition, 0);
// 关闭列文本对象
ColumnText.Flush(stamper.GetOverContent(page));
}
// 清理资源
reader.Close();
document.Close();
```
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