PM> Install-Package Spire.Presentation

using Spire.Presentation;
using System.Drawing;

namespace HighlightTextInPPT
{
    class Program
    {
        static void Main(string[] args)
        {
            // 創(chuàng)建 Presentation 類的實(shí)例
            Presentation presentation = new Presentation();
            // 加載 PowerPoint 文件
            presentation.LoadFromFile(@"Sample1.pptx");

            // 遍歷所有幻燈片
            for (int i = 0; i < presentation.Slides.Count; i++)
            {
                // 獲取當(dāng)前幻燈片
                ISlide slide = presentation.Slides[i];
                // 遍歷幻燈片上的所有形狀
                for (int j = 0; j < slide.Shapes.Count; j++)
                {
                    // 檢查當(dāng)前形狀是否為 IAutoShape 類型
                    if (slide.Shapes[j] is IAutoShape)
                    {
                        // 將形狀類型轉(zhuǎn)換為 IAutoShape
                        IAutoShape shape = slide.Shapes[j] as IAutoShape;

                        // 創(chuàng)建 TextHighLightingOptions 類的實(shí)例
                        TextHighLightingOptions options = new TextHighLightingOptions();
                        // 設(shè)置文本高亮選項(xiàng)
                        options.CaseSensitive = true;      // 區(qū)分大小寫
                        options.WholeWordsOnly = true;     // 僅匹配完整單詞

                        // 對(duì)形狀中的特定文本進(jìn)行高亮，并設(shè)置顏色
                        shape.TextFrame.HighLightText("Spire.Presentation", Color.LightYellow, options);
                    }

                }
            }

            // 保存結(jié)果文件
            presentation.SaveToFile("HighlightText.pptx", FileFormat.Pptx2013);
        }
    }
}