什么时候在MVC4中设置User.Identity.Name(When does User.Identity.Name get set in MVC4)

我试图从MVC4中的UserProfile中获取一个自定义属性，该属性使用SimpleMembershipProvider。我的表格如下：

public class UserProfile { [Key] [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] public int UserId { get; set; } public string UserName { get; set; } //Added to round out requirements for site user profile public string FirstName { get; set; } public string LastName { get; set; } public string Site { get; set; } }

当我尝试在登录时的会话变量中获取我感兴趣的userprofile项目FirstName

public ActionResult Login(LoginModel model, string returnUrl) { if (ModelState.IsValid && WebSecurity.Login(model.UserName, model.Password, persistCookie: model.RememberMe)) { var context = new UsersContext(); var curuser = context.UserProfiles.First(p => p.UserName == User.Identity.Name); Session["FName"] = curuser.FirstName; return RedirectToLocal(returnUrl); } // If we got this far, something failed, redisplay form ModelState.AddModelError("", "The user name or password provided is incorrect."); return View(model); }

我收到一个错误：Sequence没有包含我的var curuser行的元素。如果我用model.Username替换User.Identity.Name，它可以正常工作。我宁愿使用User.Identity.Name，因为我可以在任何需要的地方使用它，或者我认为。

I am trying to get a custom property out of the UserProfile in MVC4 which uses SimpleMembershipProvider. My table is as follows:

public class UserProfile { [Key] [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] public int UserId { get; set; } public string UserName { get; set; } //Added to round out requirements for site user profile public string FirstName { get; set; } public string LastName { get; set; } public string Site { get; set; } }

When I try to get the userprofile item I am interested in, FirstName, in a session variable on login

public ActionResult Login(LoginModel model, string returnUrl) { if (ModelState.IsValid && WebSecurity.Login(model.UserName, model.Password, persistCookie: model.RememberMe)) { var context = new UsersContext(); var curuser = context.UserProfiles.First(p => p.UserName == User.Identity.Name); Session["FName"] = curuser.FirstName; return RedirectToLocal(returnUrl); } // If we got this far, something failed, redisplay form ModelState.AddModelError("", "The user name or password provided is incorrect."); return View(model); }

I get an error: Sequence contains no elements referring to my var curuser line. If I replace User.Identity.Name with model.Username it works fine. I would rather use User.Identity.Name since I can use this wherever needed, or so I thought.