Question

在我的webform项目中，我在C＃中使用Aspose生成excel文件，并使用以下代码为其添加水印：

 Aspose.Cells.Worksheet sheet = workbook.Worksheets[0];
            Aspose.Cells.Drawing.MsoPresetTextEffect effect = Aspose.Cells.Drawing.MsoPresetTextEffect.TextEffect2;
            Aspose.Cells.Drawing.Shape wordart = sheet.Shapes.AddTextEffect(effect,"WATERMARKTEXT", "Arial Black", 47, false, false, 1, 1, 1, 1, 50, 300);
            Aspose.Cells.Drawing.MsoFillFormat wordArtFormat = wordart.FillFormat;
            wordArtFormat.ForeColor = System.Drawing.Color.Red;
            wordArtFormat.Transparency = 0.8;
            Aspose.Cells.Drawing.MsoLineFormat lineFormat = wordart.LineFormat;
            lineFormat.IsVisible = false;
            return workbook;

但我想在每张纸上水平和垂直重复这个水印。我怎么能这样做？

Answer 1

使用Aspose.Cells API查看以下示例代码，以完成您的任务供您参考：例如 示例代码：

Workbook workbook = new Workbook("e:\\test2\\Book1.xlsx");
            //Add watermark to the first worksheet.
            Aspose.Cells.Worksheet sheet = workbook.Worksheets[0];
            Aspose.Cells.Drawing.MsoPresetTextEffect effect = Aspose.Cells.Drawing.MsoPresetTextEffect.TextEffect2;
            Aspose.Cells.Drawing.Shape wordart = sheet.Shapes.AddTextEffect(effect, "WATERMARKTEXT", "Arial Black", 47, false, false, 1, 1, 1, 1, 50, 300);
            Aspose.Cells.Drawing.MsoFillFormat wordArtFormat = wordart.FillFormat;
            wordArtFormat.ForeColor = System.Drawing.Color.Red;
            wordArtFormat.Transparency = 0.8;
            Aspose.Cells.Drawing.MsoLineFormat lineFormat = wordart.LineFormat;
            lineFormat.IsVisible = false;


            //Now add watermark to the second worksheet as it is.
            Aspose.Cells.Worksheet worksheet1 = workbook.Worksheets[1];
            worksheet1.Shapes.AddCopy(wordart, wordart.UpperLeftRow, wordart.Top, wordart.UpperLeftColumn, wordart.Left);


            //Now add watermark to the third worksheet vertically.
            Aspose.Cells.Worksheet worksheet2 = workbook.Worksheets[2];
            worksheet2.Shapes.AddCopy(wordart, wordart.UpperLeftRow, wordart.Top, wordart.UpperLeftColumn, wordart.Left);
            worksheet2.Shapes[0].RotationAngle = 90;

            workbook.Save("e:\\test2\\out.xlsx");

注意：我在Aspose担任支持开发人员/传播者。

Answer 2

我使用此方法设置背景而不是水印：

  private static Aspose.Cells.Workbook AddExcelWaterMark(Aspose.Cells.Workbook workbook)
    {
        try
        {
            string path = HttpContext.Current.Server.MapPath("~/images/ExcelBackGround.png");
            byte[] bgBuffer = File.ReadAllBytes(path);

            foreach (Aspose.Cells.Worksheet sheet in workbook.Worksheets)
                sheet.SetBackground(bgBuffer);

            return workbook;
        }
        catch
        {
            return workbook;
        }
    }

如何在excel中重复水印

2 个答案: