在PowerPoint OpenXml C#中访问特定的TextBody

using DocumentFormat.OpenXml.Packaging;

string filePath = "path_to_pptx_file.pptx";
using (PresentationDocument presentationDocument = PresentationDocument.Open(filePath, false))
{
    // 在这里执行操作
}

PresentationPart presentationPart = presentationDocument.PresentationPart;

Presentation presentation = presentationPart.Presentation;

SlideIdList slideIdList = presentation.SlideIdList;

SlideId slideId = slideIdList.ChildElements[slideIndex] as SlideId;
SlidePart slidePart = presentationPart.GetPartById(slideId.RelationshipId) as SlidePart;

IEnumerable<Shape> shapes = slidePart.Slide.Descendants<Shape>();
foreach (Shape shape in shapes)
{
    if (shape is Shape && shape.HasTextBody)
    {
        TextBody textBody = shape.TextBody;
        // 在这里执行对TextBody的操作
    }
}