如何在创建的excel中重复水印答案

【问题标题】：How to repeat watermark in excel created如何在创建的excel中重复水印
【发布时间】：2018-01-29 09:15:00
【问题描述】：

在我的 webform 项目中，我在 C# 中生成带有 Aspose 的 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地重复这个水印。我该怎么做？

【问题讨论】：

标签： c# excel aspose

【解决方案1】：

请参阅以下示例代码，使用 Aspose.Cells API 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/宣传员。

【讨论】：

我想在一张纸上重复水印，我不能用水印来做，然后为这张纸设置背景，结果就是我想要的。
是的，设置背景图片（您可以使用所需的水印文本创建图片并保存为图像格式（例如PNG））可以满足您的需求，因为您需要多次放置水印/文本一个工作表。

【解决方案2】：

我用这种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;
        }
    }

【讨论】：