C #/obtain your Internet IP address in a complex network environment

 

 Static   String  Getip (){  String Strurl = "  Http://city.ip138.com/city0.asp  " ; //  The IP address is obtained. Uri uri = New  Uri (strurl); webrequest WR = Webrequest. Create (URI); stream s =Wr. getresponse (). getresponsestream (); streamreader SR = New  Streamreader (S, encoding. Default );  String All = Sr. readtoend (); //  Read website data              Int I = all. indexof ( "  [  " ) + 1  ;  String Tempip = all. substring (I,14 ); //  Here we need to change it based on our actual situation. The front part is [, You can intercept] and all the strings are left in the middle.              String IP = tempip. Replace ( "  ]  " , "" ). Replace ( "   " , ""  );  Return  IP address ;} 

 IntJ = all. indexof ("]")-1;StringTempip = all. substring (I, j );