C# code for Lists retrieval

it.mailupnet.services.MailupSend myService = 
new it.mailupnet.services.MailupSend();
string s = myService.Login(user, password, myURL);... string s = myService.GetLists(accessKey);... if (errorCode == 0)
{
// executing return message parsing to retrieve // the defined lists in the administration console
}