C#借助Spire.Doc for .NET实现Word段落和文本添加底纹

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;

namespace ParagraphShading
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个新的Word文档
            Document document = new Document();
            Section section = document.AddSection();

            // 添加一个段落
            Paragraph paragraph1 = section.AddParagraph();
            paragraph1.AppendText("这是一个没有底纹的段落。");

            // 添加另一个段落，并设置底纹
            Paragraph paragraph2 = section.AddParagraph();
            paragraph2.AppendText("这个段落将拥有一个绿色的背景底纹。");
            
            // 设置段落底纹的背景颜色
            paragraph2.Format.Shading.BackgroundPatternColor = Color.LightGreen;
            // 可以选择设置底纹图案和前景颜色，这里我们使用纯色，所以Texture为Solid，ForegroundColor不影响
            paragraph2.Format.Shading.Texture = TextureStyle.TextureSolid;
            // paragraph2.Format.Shading.ForegroundColor = Color.DarkGreen; // 如果Texture不是Solid，可以设置前景颜色

            // 添加第三个段落，演示不同底纹效果
            Paragraph paragraph3 = section.AddParagraph();
            paragraph3.AppendText("这个段落将使用一个水平条纹底纹。");
            paragraph3.Format.Shading.BackgroundPatternColor = Color.LightBlue;
            paragraph3.Format.Shading.ForegroundColor = Color.DarkBlue;
            paragraph3.Format.Shading.Texture = TextureStyle.TextureHorizontal;

            // 保存文档
            document.SaveToFile("ParagraphShading.docx", FileFormat.Docx2013);
            document.Dispose();
            System.Console.WriteLine("文档已生成：ParagraphShading.docx");
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;

namespace TextShading
{
    class Program
    {
        static void Main(string[] args)
        {
            Document document = new Document();
            Section section = document.AddSection();

            Paragraph paragraph = section.AddParagraph();
            paragraph.AppendText("这是一段包含重要关键词的文本。");

            // 通过查找文本来获取TextRange
            TextSelection selection = paragraph.Find("重要关键词", true, true);
            if (selection != null)
            {
                TextRange textRange = selection.GetAsOneRange();
                // 设置TextRange的底纹
                textRange.CharacterFormat.Shading.BackgroundPatternColor = Color.Yellow;
                textRange.CharacterFormat.Shading.Texture = TextureStyle.TextureSolid;
            }

            // 也可以在追加文本时直接设置其底纹
            Paragraph paragraph2 = section.AddParagraph();
            TextRange tr1 = paragraph2.AppendText("另一个示例：");
            TextRange tr2 = paragraph2.AppendText("高亮文本");
            tr2.CharacterFormat.Shading.BackgroundPatternColor = Color.LightCoral;
            tr2.CharacterFormat.Shading.Texture = TextureStyle.TextureSolid;
            TextRange tr3 = paragraph2.AppendText("，继续普通文本。");

            // 保存文档
            document.SaveToFile("TextShading.docx", FileFormat.Docx2013);
            document.Dispose();
            System.Console.WriteLine("文档已生成：TextShading.docx");
        }
    }
}