使用.NET的Spire.Presentation从pptx中的组形状中提取文本

using Spire.Presentation;

Presentation presentation = new Presentation();
presentation.LoadFromFile("your_pptx_file.pptx");

foreach (ISlide slide in presentation.Slides)
{
    // 遍历每个组形状
    foreach (IShape shape in slide.Shapes)
    {
        if (shape is IGroupShape groupShape)
        {
            // 遍历组形状中的每个子形状
            foreach (IShape subShape in groupShape.Shapes)
            {
                if (subShape is IAutoShape autoShape)
                {
                    // 提取文本内容
                    string text = autoShape.TextFrame.Text;
                    Console.WriteLine(text);
                }
            }
        }
    }
}