为什么我需要处置 System.Net.Mail.MailMessage 实例? [英] Why do I need to Dispose a System.Net.Mail.MailMessage instance?

问题描述

它分配了哪些需要处置的非托管资源?它不只是一个简单的托管数据数组吗?那么为什么要处理?

What unmanaged resources does it allocates that needs to be disposed? Isn't it just a simple array of managed data? So why disposing?

推荐答案

邮件消息有附件 -> 附件是 Streams -> Streams 将被处理.

A mail message has attachments -> attachments are Streams -> Streams are to be disposed.

这里是MailMessage的反编译的Dispose方法:

Here is the decompiled Dispose method of MailMessage:

    protected virtual void Dispose(bool disposing)
    {
        if (disposing && !this.disposed)
        {
            this.disposed = true;
            if (this.views != null)
            {
                this.views.Dispose();
            }
            if (this.attachments != null)
            {
                this.attachments.Dispose();
            }
            if (this.bodyView != null)
            {
                this.bodyView.Dispose();
            }
        }
    }

作为一般规则，一个类应该实现 IDisposable，如果它包含的任何子类实现它.

As a general rule a class should implement IDisposable if any of its contained children implement it.

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