Software developer can use System.Web.SessionState.HttpSessionState member IsCookieless which identifies whether this session is tracked with a cookie or using modified URLs. Related TutorialsHow to investigate the ASP.NET page life cycle in VB.NET How to open popup window in ASP.NET How to find number of items in the current session collection in ASP.NET How to compare strings in ASP.NET How to use the Calendar control in ASP.NET page in C#