NetCore给World或Pdf添加水印
框架：net Core 3.1
包：
World：FreeSpire.Doc 7.11.0
PDF：Spire.PDF 8.1.0
因为两个包的命名空间都是 Spire 无法通知引用所以建了两个项目
给PDF文件添加文字水印
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/// <summary>
/// 给PDF文件添加文字水印
/// </summary>
/// <param name="pdfPath">目标文件路径</param>
/// <param name="targetPath">保存路径</param>
/// <param name="marks">文字水印内容</param>
/// <returns></returns>
public static void FontWaterMarkToFile()
{
Spire.Pdf.PdfDocument pdf1 = new PdfDocument();
pdf1.LoadFromFile(@"D:\广联达BIM课件新版.pdf");
for (int i = 0; i < pdf1.Pages.Count; i++)
{
PdfPageBase page = pdf1.Pages[0];
page = pdf1.Pages[i];
PdfTilingBrush brush = new PdfTilingBrush(new SizeF(page.Canvas.ClientSize.Width / 2, page.Canvas.ClientSize.Height / 3));
brush.Graphics.SetTransparency(0.3f);
brush.Graphics.Save();
brush.Graphics.TranslateTransform(brush.Size.Width / 2, brush.Size.Height / 2);
brush.Graphics.RotateTransform(-45);
brush.Graphics.DrawString(i.ToString(), new Spire.Pdf.Graphics.PdfFont(PdfFontFamily.Helvetica, 24), PdfBrushes.Blue, 0, 0, new PdfStringFormat(PdfTextAlignment.Center));
brush.Graphics.Restore();
brush.Graphics.SetTransparency(1);
page.Canvas.DrawRectangle(brush, new RectangleF(new PointF(0, 0), page.Canvas.ClientSize));
}
//保存文档
pdf1.SaveToFile(@"D:\Output.pdf");
}
给World文件添加文字水印
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/// <summary>
/// 给World文件添加文字水印
/// </summary>
public static void FontWaterMark()
{
Spire.Doc.Document doc1 = new Spire.Doc.Document();
doc1.LoadFromFile(@"D:\面试题.docx");
//设置文本水印
TextWatermark txtWatermark = new TextWatermark();
txtWatermark.Text = "Microsoft";
txtWatermark.FontSize = 90;
txtWatermark.Layout = WatermarkLayout.Diagonal;
doc1.Watermark = txtWatermark;
doc1.SaveToFile("水印.docx");
}
