相关疑难解决方法(0)

我正在为我的MVC5项目使用OWIN身份验证.这是我的SignInAsync

 private async Task SignInAsync(ApplicationUser user, bool isPersistent)
        {
            var AccountNo = "101";
            AuthenticationManager.SignOut(DefaultAuthenticationTypes.ExternalCookie);
            var identity = await UserManager.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie);
            identity.AddClaim(new Claim(ClaimTypes.UserData, AccountNo));
            AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = isPersistent, RedirectUri="Account/Index"}, identity);
        }

如您所见,我添加AccountNo到声明列表中.

现在,如何在我的应用程序中的某个时刻更新此声明？到目前为止,我有这个:

 public string AccountNo
        {

            get
            {
                var CP = ClaimsPrincipal.Current.Identities.First();
                var Account= CP.Claims.FirstOrDefault(p => p.Type == ClaimTypes.UserData);
                return Account.Value;
            }
            set
            {
                var CP = ClaimsPrincipal.Current.Identities.First();
                var AccountNo= CP.Claims.FirstOrDefault(p => p.Type == ClaimTypes.UserData).Value;
                CP.RemoveClaim(new Claim(ClaimTypes.UserData,AccountNo));
                CP.AddClaim(new Claim(ClaimTypes.UserData, value));
            }

        }

当我尝试删除声明时,我得到以下异常:

声明' http://schemas.microsoft.com/ws/2008/06/identity/claims/userdata:101 …