C＃Outlook 2007 COM互操作应用程序不退出！ [英] C# Outlook 2007 COM interop application does not exit!

问题描述

任何想法为什么下列代码不会退出通过COM interop创建的Outlook 2007过程？

Any ideas why the following code does not exit the Outlook 2007 process created via COM interop?

Microsoft.Office.Interop.Outlook.Application app = new Microsoft.Office.Interop.Outlook.Application();

var item = app.Session.OpenSharedItem("C:\\test.msg") as Microsoft.Office.Interop.Outlook.MailItem;
string body = item.HTMLBody;
int att = item.Attachments.Count;

(item as Microsoft.Office.Interop.Outlook._MailItem).Close(Microsoft.Office.Interop.Outlook.OlInspectorClose.olDiscard);
System.Runtime.InteropServices.Marshal.ReleaseComObject(item);

(app as Microsoft.Office.Interop.Outlook._Application).Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(app);
System.Diagnostics.Debugger.Break();

使用Word几乎完全相同的代码段，所以我想知道我是否忘记清理一些东西。 ..

An almost identical snippet using Word works, so I wonder if I'm forgetting to clean up something...

推荐答案

您的代码中引用了第三个COM对象： app.Session 。这也必须正确释放。请尝试以下代码：

You have a 3rd COM object referenced in your code: app.Session. This must also be released correctly. Try this code:

Microsoft.Office.Interop.Outlook.Application app = null;
Microsoft.Office.Interop.Outlook.NameSpace session = null;
Microsoft.Office.Interop.Outlook.MailItem item = null;

try {
    app = new Microsoft.Office.Interop.Outlook.Application();
    session = app.Session;
    item = session.OpenSharedItem("C:\\test.msg") as Microsoft.Office.Interop.Outlook.MailItem;

    string body = item.HTMLBody;
    int att = item.Attachments.Count;

    (item as Microsoft.Office.Interop.Outlook._MailItem).Close(Microsoft.Office.Interop.Outlook.OlInspectorClose.olDiscard);

    (app as Microsoft.Office.Interop.Outlook._Application).Quit();
} finally {
    if(item != null) {
        System.Runtime.InteropServices.Marshal.FinalReleaseComObject(item);
    }
    if(session != null) {
        System.Runtime.InteropServices.Marshal.FinalReleaseComObject(session);
    }
    if(app != null) {
        System.Runtime.InteropServices.Marshal.FinalReleaseComObject(app);
    }
}

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