Forms Authentication - Passing logged in user details to current context

We can set the Logged in user details to current context using Application_AuthenticateRequest function in Global.asax file.

E.g.

protected void Application_AuthenticateRequest(object sender, EventArgs e)
{
// look if any security information exists for this request
if (HttpContext.Current.User != null)
{
// see if this user is authenticated, any authenticated cookie (ticket) exists for this user
if (HttpContext.Current.User.Identity.IsAuthenticated)
{
// see if the authentication is done using FormsAuthentication
if (HttpContext.Current.User.Identity is FormsIdentity)
{
// Get the roles stored for this request from the ticket
// get the identity of the user
FormsIdentity identity = (FormsIdentity)HttpContext.Current.User.Identity;
// get the forms authetication ticket of the user
FormsAuthenticationTicket ticket = identity.Ticket;
// get the roles stored as UserData into the ticket
string[] roles = ticket.UserData.Split(',');
// create generic principal and assign it to the current request
HttpContext.Current.User = new System.Security.Principal.GenericPrincipal(identity, roles);
}
}
}
}