c# - 打开 XML SDK : 'The process cannot access the file ' x' because it is being used by another process. '

Question

这是我修改 PowerPoint 演示文稿的代码，将其另存为新文件，关闭它，然后尝试打开该文件。

var doc = PresentationDocument.Open(@"d:\temp.pptx", true);    
//... proccess presentation
doc.SaveAs(@"d:\temp2.pptx");
doc.Close();

var doc2 = PresentationDocument.Open(@"d:\temp2.pptx", false);
doc2.Close();

我不明白为什么运行时会抛出异常:

The process cannot access the file 'x' because it is being used by another process.

Answer 1

我注意到 doc.SaveAs() 返回了我刚刚关闭的对象

var savedDoc = doc.SaveAs(@"d:\temp2.pptx") as PresentationDocument;

savedDoc.Close();