将演示文稿合并为单个演示文稿 [英] Merging presentations into single presentation

问题描述

我正在使用 GemBox.Presentation，我需要合并多个 PPTX 文件，将它们组合成单个 PPTX 文件.

I'm using GemBox.Presentation and I need to merge multiple PPTX files, combine them into a single PPTX file.

我试过了:

PresentationDocument presentation1 = PresentationDocument.Load("PowerPoint1.pptx");
PresentationDocument presentation2 = PresentationDocument.Load("PowerPoint2.pptx");

foreach (Slide slide2 in presentation2.Slides)
    presentation1.Slides.Add(slide2);

但我收到以下错误:

项目已包含在某个集合中.首先将其从该集合中删除.
参数名称:item

Item is already contained in some collection. Remove it from that collection first.
Parameter name: item

如何将多个演示文稿合并为一个演示文稿?

How can I merge several presentations into one presentation?

推荐答案

使用 AddCopy 方法而不是 Add.
换句话说，试试这个:

Use one of the AddCopy methods instead of Add.
In other words, try this:

var presentation1 = PresentationDocument.Load("PowerPoint1.pptx");
var presentation2 = PresentationDocument.Load("PowerPoint2.pptx");

// Merge "PowerPoint2.pptx" file into "PowerPoint1.pptx" file.
var context = CloneContext.Create(presentation2, presentation1);
foreach (var slide in presentation2.Slides)
    presentation1.Slides.AddClone(slide, context);

// Save resulting "Merged PowerPoints.pptx" file.
presentation1.Save("Merged PowerPoints.pptx");

另外，您可以参考克隆示例.

Also, you can refer to Cloning example.

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