利用NPOI给excel文件中添加图片

利用NPOI给excel中添加图片

核心代码，可自行封装

 var imgPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "seal.png");
 var filePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "tttt.xls");
 var newPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "aaaa.xls");
 var buffer = File.OpenRead(filePath);
 var bytes = File.ReadAllBytes(imgPath);
 var workbook = new HSSFWorkbook(buffer);
 var sheet = workbook.GetSheetAt(0);
 var drawing = sheet.CreateDrawingPatriarch();
 var pic = workbook.AddPicture(bytes, PictureType.PNG);
 var anchor = new HSSFClientAnchor();
 anchor.SetAnchor(
    short.Parse(Col1.Text),
     int.Parse(Row1.Text),
    int.Parse(X1.Text),
     int.Parse(Y1.Text),
     short.Parse(Col2.Text),
     int.Parse(Row2.Text),
     int.Parse(X2.Text),
     int.Parse(Y2.Text));
 anchor.AnchorType = AnchorType.MoveAndResize;
 drawing.CreatePicture(anchor, pic);
 using (var fs = new FileStream(newPath, FileMode.Create, FileAccess.Write))
 {
     workbook.Write(fs);
 }

参数说明：