一个简单的Ｃ＃入门的例子，但是是学习的入门的例子，简单而有用-A simple C# example entry, but entry is an example of learning, simple and useful

C# 实现pop发邮件，接收邮件并接收附件。。。自己测试用的。大家将就着看看吧-C# to achieve pop mail, receive mail and receive attachments. . . Own testing purposes. We will look forward to it