C#判断检测网络是否连接

完整的代码: using System.Runtime.InteropServices;

 namespace internet

{

 public class Class1

{

[DllImport("wininet.dll")]

private extern static bool InternetGetConnectedState( out int connectionDescription, int reservedValue ) ;

public Class1(){}

 private bool IsConnected()

{

 int I=0;

 bool state = InternetGetConnectedState(out I,0);

return state;

}

}

}