处置 Microsoft.Office.Interop.Word.Application [英] Disposing of Microsoft.Office.Interop.Word.Application

问题描述

(该帖子的一些后续内容(仍未得到答复):https://stackoverflow.com/q/6197829/314661)

(Somewhat of a follow on from the post (which remains unanswered): https://stackoverflow.com/q/6197829/314661)

使用以下代码

Application app = new Application();
_Document doc = app.Documents.Open("myDocPath.docx", false, false, false);
doc.PrintOut(false);
doc.Close();

我正在尝试以编程方式打开和打印文件.

I am attempting to open and print a file programmatically.

问题是每次我运行上述代码时都会启动一个新的 WINWORD.exe 进程，显然这会很快吃掉所有内存.

The problem is each time I run the above code a new WINWORD.exe process is started and obviously this quickly eats up all the memory.

应用程序类似乎不包含 dispose/close 或类似方法.

The application class doesn't seem to contain a dispose/close or similar method.

经过一番研究，我(意识到)并将代码更改为以下内容.

After a bit of research I (realized) and changed the code to the following.

 Application app = new Application();
 _Document doc = app.Documents.Open(fullFilePath + ".doc", false, false, false);
 doc.PrintOut(false);
 doc.Close();
 int res = System.Runtime.InteropServices.Marshal.ReleaseComObject(doc);
 int res1 = System.Runtime.InteropServices.Marshal.ReleaseComObject(app);

我可以看到剩余的引用计数为零，但进程仍然存在?

And I can see the remaining reference count is zero but the processes remain?

PS:我使用的是 Microsoft.Office.Interop 库的第 14 版.

PS: I'm using Version 14 of the Microsoft.Office.Interop library.

推荐答案

也许尝试设置 doc = null 并调用 GC.Collect()

Perhaps try setting doc = null and calling GC.Collect()

编辑，不是我自己的代码，我忘记了我从哪里得到的，但这是我用来处理 Excel 的，它可以完成工作，也许您可​​以从中收集到一些东西:

Edit, not really my own code I forget where I got it but this is what I use to dispose of Excel, and it does the job maybe you can glean something from this:

public void DisposeExcelInstance()
{
    app.DisplayAlerts = false;
    workBook.Close(null, null, null);
    app.Workbooks.Close();
    app.Quit();
    if (workSheet != null)
        System.Runtime.InteropServices.Marshal.ReleaseComObject(workSheet);
    if (workBook != null)
        System.Runtime.InteropServices.Marshal.ReleaseComObject(workBook);
    if (app != null)
        System.Runtime.InteropServices.Marshal.ReleaseComObject(app);
    workSheet = null;
    workBook = null;
    app = null;
    GC.Collect(); // force final cleanup!
}

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