How to get IP Address of User using .net?

Question

In my web application i have registration form, when user register i want to get his ip address of his system, how can i get using asp.net. help me please.

Answer 1

HttpContext.Current.Request.UserHostAddress; 

or

HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

To get the IP address of the machine and not the proxy use the following code

HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

Answer 2

HttpContext.Current.Request.UserHostAddress

Answer 3

尝试：

Request.ServerVariables["REMOTE_ADDR"].ToString()