var claimsPrincipal = new ClaimsPrincipal();
var a =new ClaimsIdentity();
a.AddClaim(new Claim("UserId","150"));
if (claimsPrincipal != null) claimsPrincipal.AddIdentity(a);
Thread.CurrentPrincipal = claimsPrincipal;
var claimsPrincipal = Thread.CurrentPrincipal as ClaimsPrincipal;
var userId= claimsPrincipal.Claims.FirstOrDefault(c => c.Type == "UserId").Value;