Software developer can use System.Web.SessionState.HttpSessionState member Clear() which removes all the session items but doesn’t change the current session identifier. Related TutorialsHow to use a separate Windows service for state management in ASP.NET How to read XML file in VB.NET How to open popup window in ASP.NET How to validate XML document with XDocument class in VB.NET How to use Validation groups in ASP.NET 4.0