Hi I'm using azure active directory for my WebApp, the user id is GUID given automatically by azure active directory, so im having problems with this code:
public long? UserId { get { var userId = Thread.CurrentPrincipal.Identity.GetUserId(); if (string.IsNullOrEmpty(userId)) { return null; }
return Convert.ToInt64(userId);
Exception Details: System.FormatException: Input string was not in a correct format.
What can i do ?