C# 监测当前网络连接状态，点击检测按钮即可检测是否连接到网络，将检测结果以弹出框的形式告之。经www.codefang.com测试，检测结果准确。C# to monitor the current network connection status, click the test button to test whether the connection to the network, the test results reported in the form of pop-up box. T