FormsAuthentication.GetAuthCookie Method (String, Boolean)
Creates an authentication cookie for a given user name. This does not set the cookie as part of the outgoing response, so that an application can have more control over how the cookie is issued.
Assembly: System.Web (in System.Web.dll)
public static HttpCookie GetAuthCookie( string userName, bool createPersistentCookie )
The name of the authenticated user.
true to create a durable cookie (one that is saved across browser sessions); otherwise, false.
Available since 1.1