Use Aspose. Slide to obtain the titles of all slides in the PPT,

Use Aspose. Slide to obtain the titles of all slides in the PPT,

This article uses a third-party class library Aspose. Slide. If you are using OpenXml, you can see the following link. The principles are the same. This article also provides a detailed explanation of the Xml tag.

How to: Get titles of all slides in a presentation

Principle:

The principle is easy to explain, and everyone can understand the principle.

Simply put, a PPT contains multiple slides, one slide contains multiple shapes, and the Shape has a Plcaeholder. The Type attribute of Placeholder determines whether the title is used.

Aspose IPresentation-> Slide-> Shape-> PlaceHolder

 

Code:

To determine whether a Shape is a Title, use the extension method:

Public static class ShapeExtension {public static bool IsTitleShape (this IShape p_shape) {if (p_shape = null) {return false;} var placeholder = p_shape.Placeholder; if (placeholder! = Null) {switch (placeholder. type) {// Any title shape. case PlaceholderType. title: // A centered title. case PlaceholderType. centeredTitle: return true; default: return false ;}}View Code

We define a SlideTitle to store.

Public class SlideTitle {public int PageNum {get; set;} public int TitleCount {get; set;} public string [] Titles {get; set ;}}View Code

Expand the IPresentation object and add a GetTitles method.

    public static class PresentationExtension    {        public static IEnumerable<SlideTitle> GetTitles(this IPresentation p_presentation)        {            var presentation = p_presentation;            if (presentation != null)            {                foreach (var slide in presentation.Slides)                {                    List<string> titles = new List<string>();                    foreach (var shape in slide.Shapes)                    {                        if (!shape.IsTitleShape())                        {                            continue;                        }                        var autoShape = shape as AutoShape;                        if (autoShape == null)                        {                            continue;                        }                        titles.Add(autoShape.TextFrame.Text);                    }                    var title = new SlideTitle()                    {                        PageNum = slide.SlideNumber,                        TitleCount = titles.Count,                        Titles = titles.ToArray()                    };                    yield return title;                }            }        }    }

 

Summary:

This is a very simple thing, mainly to determine which attribute. Fortunately, I found Microsoft's article.

 

Original article

Reprinted please indicate the source: http://www.cnblogs.com/gaoshang212/p/4440807.html