C#

///SERVERCODE <br />
<br />
[WebMethod(EnableSession =true)] <br />
public bool Login(string username, string password) <br />
{ <br />
    Session["userid"]=username; <br />
    /* <br />
     Some non important lines of code here<br />
     */ <br />
    return true; <br />
} <br />
<br />
public string WhoAmI() <br />
{ <br />
    return (string) Session["userid"]; <br />
} 

//CLIENT CODE <br />
<br />
public class Form() <br />
{ <br />
   //create a proxy class to the Web Services<br />
<br />
   private MyWebServices m_proxy = new MyWebServices; <br />
<br />
   /*Auto Generated code for Windows Form */ <br />
<br />
<br />
   //Login button click event<br />
   public void Login_click (object sender, EventArg eventArg)  <br />
   { <br />
       m_proxy.CookieContainer = new System.Net.CookieContainer(); <br />
       if (m_proxy.Login()) <br />
       { <br />
           MessageBox.Show("Login Success"); <br />
       } <br />
        else <br />
           MessageBox.Show("Login Fail"); <br />
<br />
   } <br />
<br />
    //WhoAmI button click event<br />
    public void WhoAmI_click(object sender, EventArg eventArg) <br />
    { <br />
         MessageBox.Show("Hello, you are "+m_proxy.WhoAmI()); <br />
    } <br />
<br />
}