無法找到類型或命名空間名稱'ClaimsIdentity'

Question

我已經添加了這些使用，並且已安裝nuget軟件包。爲什麼我不能使用索賠？ Visual Studio聲稱無法找到ClaimsIDentity，Claim和ClaimTypes。

〜/控制器/ AccController.cs

using Microsoft.AspNet.Identity; 
using Microsoft.Owin.Security; 
using System.Threading.Tasks; 
using System.Web; 
using System.Web.Mvc; 

namespace MyProject.Controllers 
{ 
    public class AccController : Controller 
    { 
     [AllowAnonymous] 
     [HttpPost] 
     public ActionResult Login(LoginModel model) 
     { 
      if (!ModelState.IsValid) 
      { 
       return View(); 
      } 

      // Don't do this in production! 
      if (model.Email == "admin@admin.com" && model.Password == "password") 
      { 
       var identity = new ClaimsIdentity(new[] { 
       new Claim(ClaimTypes.Name, "Ben"), 
       new Claim(ClaimTypes.Email, "a@b.com"), 
       new Claim(ClaimTypes.Country, "England") 
      }, 
        "ApplicationCookie"); 

       var ctx = Request.GetOwinContext(); 
       var authManager = ctx.Authentication; 

       authManager.SignIn(identity); 

       return Redirect(GetRedirectUrl(model.ReturnUrl)); 
      } 

      // user authN failed 
      ModelState.AddModelError("", "Invalid email or password"); 
      return View(); 
     } 
    } 
} 

Answer 1

嘗試添加該代碼中的：

using System.Security.Claims;