C# 在PPT中添加多行（平铺）文本水印效果

今天药忘吃喽~ 2022-11-04 01:40 168阅读 0赞

在PPT幻灯片中，可通过添加形状的方式，来实现类似水印的效果，可添加单一文本水印效果，即幻灯片中只有一个文本水印；也可以添加多行（平铺）文本水印效果，即幻灯片中以一定方式平铺排列多个文本水印效果。本文主要以C\#程序代码为例介绍第二种水印添加方法，另附VB.NET代码供参考。

### **程序环境** ###

*  需引入以下程序集文件，如图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VpY2VibHVl_size_16_color_FFFFFF_t_70][]

其中，Spire.Presentation.dll程序集，需下载安装至本地（也可以通过Nuget下载），这里使用的***[免费版][Link 1]***。

*  .NET Framework 4.8

**详细代码**

【C\#】

using Spire.Presentation;
    using Spire.Presentation.Drawing;
    using System;
    using System.Drawing;
    using System.Windows.Forms;
    
    namespace TextWatermark2
    {
        class Program
        {
            static void Main(string[] args)
            {
                //加载PPT文档
                Presentation ppt = new Presentation();
                ppt.LoadFromFile("test.pptx");
    
                //获取需要添加的水印的幻灯片（第一张幻灯片）
                ISlide slide = ppt.Slides[0];
    
                //创建水印文本
                Font font = new Font("宋体", 20);
                String watermarkText = "内部资料";
                SizeF size = TextRenderer.MeasureText(watermarkText, font);
    
                //指定水印添加的起始坐标位置
                float x = 50;
                float y = 80;
                for (int i = 0; i < 4; i++)
                {
                    for (int j = 0; j < 4; j++)
                    {
                        //绘制文本，设置文本格式
                        RectangleF rect = new RectangleF(x, y, size.Width, size.Height);
                        IAutoShape shape = slide.Shapes.AppendShape(Spire.Presentation.ShapeType.Rectangle, rect);
                        shape.Fill.FillType = FillFormatType.None;
                        shape.ShapeStyle.LineColor.Color = Color.White;
                        shape.Rotation = -45;
                        shape.Locking.SelectionProtection = true;
                        shape.Line.FillType = FillFormatType.None;
                        shape.TextFrame.Text = watermarkText;
                        TextRange textRange = shape.TextFrame.TextRange;
                        textRange.Fill.FillType = FillFormatType.Solid;
                        textRange.Fill.SolidColor.Color = Color.FromArgb(120, Color.HotPink);
                        textRange.EastAsianFont = new TextFont(font.Name);
                        textRange.FontHeight = font.Size;
                        x += (100 + size.Width);
                    }
                    x = 30;
                    y += (100 + size.Height);
                }
    
                //保存文档
                ppt.SaveToFile("TextWatermark.pptx", FileFormat.Pptx2013);
                System.Diagnostics.Process.Start("TextWatermark.pptx");
            }
        }
    }

【VB.NET】

Imports Spire.Presentation
    Imports Spire.Presentation.Drawing
    Imports System.Drawing
    Imports System.Windows.Forms
    
    Namespace TextWatermark2
    	Class Program
    		Private Shared Sub Main(args As String())
    			'加载PPT文档
    			Dim ppt As New Presentation()
    			ppt.LoadFromFile("test.pptx")
    
    			'获取需要添加的水印的幻灯片（第一张幻灯片）
    			Dim slide As ISlide = ppt.Slides(0)
    
    			'创建水印文本
    			Dim font As New Font("宋体", 20)
    			Dim watermarkText As [String] = "内部资料"
    			Dim size As SizeF = TextRenderer.MeasureText(watermarkText, font)
    
    			'指定水印添加的起始坐标位置
    			Dim x As Single = 50
    			Dim y As Single = 80
    			For i As Integer = 0 To 3
    				For j As Integer = 0 To 3
    					'绘制文本，设置文本格式
    					Dim rect As New RectangleF(x, y, size.Width, size.Height)
    					Dim shape As IAutoShape = slide.Shapes.AppendShape(Spire.Presentation.ShapeType.Rectangle, rect)
    					shape.Fill.FillType = FillFormatType.None
    					shape.ShapeStyle.LineColor.Color = Color.White
    					shape.Rotation = -45
    					shape.Locking.SelectionProtection = True
    					shape.Line.FillType = FillFormatType.None
    					shape.TextFrame.Text = watermarkText
    					Dim textRange As TextRange = shape.TextFrame.TextRange
    					textRange.Fill.FillType = FillFormatType.Solid
    					textRange.Fill.SolidColor.Color = Color.FromArgb(120, Color.HotPink)
    					textRange.EastAsianFont = New TextFont(font.Name)
    					textRange.FontHeight = font.Size
    					x += (100 + size.Width)
    				Next
    				x = 30
    				y += (100 + size.Height)
    			Next
    
    			'保存文档
    			ppt.SaveToFile("TextWatermark.pptx", FileFormat.Pptx2013)
    			System.Diagnostics.Process.Start("TextWatermark.pptx")
    		End Sub
    	End Class
    End Namespace

完成代码后，执行程序，生成结果文档。在结果文档中可查看水印添加效果，如下图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VpY2VibHVl_size_16_color_FFFFFF_t_70 1][]

（本文完）

转载请注明出处！

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[Link 1]: https://www.e-iceblue.cn/Downloads/Free-Spire-Presentation-NET.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0VpY2VibHVl_size_16_color_FFFFFF_t_70 1]: /images/20221023/a49d16d646414e4895a9b6460cf8b037.png