C# 使用自定义成员资格和角色提供程序在MVC中实现IPrincipal和IIdentity

我被一个自定义iprincpal和iidentity对象的实现所困扰。我现在花了一天的时间来寻找如何实现这些权利，并用更多的信息来扩展它

我想用诸如全名或其他自定义变量扩展信息

@Context.User.Identity.Name

编辑：现在我得到了以下代码，但是如果我尝试读取

@（（CustomPrincipal）Context.User.Identity）.Nachname

我得到了一个错误，

System.Web.Security.formSidenty

无法转换到

CustomPrincipal

有什么想法吗

public class CustomPrincipal : GenericPrincipal
{
    public CustomPrincipal(IIdentity identity, String[] roles) : base(identity, roles){ 

    }
    public String Vorname { get; set; }
    public String Nachname { get; set; } 
}

会计模型：

public class FormsAuthenticationService : IFormsAuthenticationService
{
    public void SignIn(string userName, bool createPersistentCookie)
    {
        if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Der Wert darf nicht NULL oder leer sein.", "userName");
        // Grab user information to insert
        KIMembershipUser membershipUser = (KIMembershipUser)Membership.GetUser(userName);
        var customInfo = String.Format("{0}|{1}", membershipUser.Vorname, membershipUser.Nachname);
        // Create and encrypt the ticket
        var ticket = new FormsAuthenticationTicket(
            2, // Version number
            userName, // Username
            DateTime.Now, // Issue date
            DateTime.Now.AddMinutes(30), // Expiration date
            createPersistentCookie, // Is it persistent?
            customInfo // User data
        );
        var encTicket = FormsAuthentication.Encrypt(ticket);
        // Store the ticket into a cookie
        var cookie = FormsAuthentication.GetAuthCookie(FormsAuthentication.FormsCookieName,createPersistentCookie);
        cookie.Value = encTicket;
        // Append the cookie to the response
        HttpContext.Current.Response.Cookies.Add(cookie); 

        //FormsAuthentication.SetAuthCookie(userName, createPersistentCookie);
    }

    public void SignOut()
    {
        FormsAuthentication.SignOut();
    }
}

global.asax：

    protected void Application_PostAuthenticateRequest(){
        // Collect current security information
        var principal = HttpContext.Current.User as RolePrincipal;
        if (principal == null)
            return;
        var identity = principal.Identity as FormsIdentity;
        if (identity == null)
            return;
        var roles = principal.GetRoles();
        // Extract user data in the authentication ticket
        var customInfo = identity.Ticket.UserData;
        var tokens = customInfo.Split('|');
        // Build a richer principal object
        var CustomPrincipal = new CustomPrincipal(identity, roles){
            Vorname = tokens[0],
            Nachname = tokens[1]
        };
        // Store the new principal in the HttpContext
        HttpContext.Current.User = CustomPrincipal;
    }

---

使用

（CustomPrincipal）Context.User）.Nachname

而不是

（CustomPrincipal）Context.User.Identity）.Nachname

扩展GenericPrincipal和GenericEntity类有什么问题？我不知道有这些对象。如何扩展它们？您可能不需要扩展（继承）它们，最简单的方法是为它们中的每一个构建一个新实例：@Islam Ibrahim我用昨天所做的编辑了我的第一篇文章。也许你有个主意？Do（CustomPrincipal）Context.User）.Nachname而不是（CustomPrincipal）Context.User.Identity.Nachname。