Question

问题在于SmtpClient in .NET 3.5。我知道网络4的处置变化,但移徙目前不是一个选择。

我不禁要问,如果你使用派遣国和点燃国,会发生什么。例:

public void SendSomething(){
    SmtpClient smtp = new SmtpClient(...);
    smtp.SendCompleted += SendCompletedCallback;
    smtp.SendAsync(...);
}

private void SendCompletedCallback(object sender, AsyncCompletedEventArgs e){
...
}

如果你发出类似的东西,目标就会超出方法的范围,而点燃者只是缓慢的,现在才开始实际发送:这是否带来任何问题? 或者, s子公司是否保护自己免遭垃圾收集等?

According to the msdn documentation you can t do a sendasync while another sendasync isn t finished yet. But what happens if you create two smtpclients and do a sendasync at the same time (for example two threads call the SendSomething() method at the same time). Can it handle this or will it create problems?

Another question: Currently in .NET 3.5 the smtp client doesn t send the quit command after it s done. This is fixed in .NET 4 with dispose. However how bad is this bug: does it cause problems for the smtp servers if the quit command isn t sent? Or is this something they should be able to handle?

Answer 1

As long as the async operation is executing, the SmtpClient is referencced by a method frame or callback delegate.
Don t worry about it.

多个<代码>SmtpClients将不会干扰对方。

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