检查用户是否在asp.net mvc Identity中担任角色

Question

我在使用用户和角色为数据库播种时遇到了问题.

创建用户和角色(我可以在抛出错误后在数据库中看到它们).

但是,当我尝试检查用户是否在角色中时,我得到一个例外.

我的代码是:

    public class tbInitializer<T> : DropCreateDatabaseAlways<tbContext>
    {
    protected override void Seed(tbContext context)
    {
        ApplicationDbContext userscontext = new ApplicationDbContext();
        var userStore = new UserStore<ApplicationUser>(userscontext);
        var userManager = new UserManager<ApplicationUser>(userStore);

        var roleStore = new RoleStore<IdentityRole>(userscontext);
        var roleManager = new RoleManager<IdentityRole>(roleStore);


        if(!userscontext.Users.Any(x=> x.UserName=="marktest"))
        {
            var user = new ApplicationUser { UserName = "marktest", Email = "marktest@gmail.com" };
            userManager.Create(user, "Pa$$W0rD!");
        }

        if (!roleManager.RoleExists("Admin"))
        { 
            roleManager.Create(new IdentityRole("Admin"));
        }

        if(!userManager.IsInRole("marktest","Admin"))
        { 
            userManager.AddToRole("marktest","Admin");
        }

但是,在线:

if(!userManager.IsInRole("marktest","Admin"))

抛出错误的异常: UserId not found.

在抛出异常后检查时,用户和角色都在数据库中:

谁能看到我做错了什么？

谢谢你的帮助,

标记

Answer 1

我找到了解决方案,以防其他人遇到此问题.

"IsInRole"期待User.Id - 而不是UserName字符串 - 所以我改为:

            if (!userManager.IsInRole(user.Id, "Admin"))
            {
                userManager.AddToRole(user.Id, "Admin");
            }

所以工作代码变成:

    ApplicationDbContext userscontext = new ApplicationDbContext();
    var userStore = new UserStore<ApplicationUser>(userscontext);
    var userManager = new UserManager<ApplicationUser>(userStore);

    var roleStore = new RoleStore<IdentityRole>(userscontext);
    var roleManager = new RoleManager<IdentityRole>(roleStore);

    // Create Role
    if (!roleManager.RoleExists("Admin"))
    { 
        roleManager.Create(new IdentityRole("Admin"));
    }

    if(!userscontext.Users.Any(x=> x.UserName=="marktest"))
    {
        // Create User
        var user = new ApplicationUser { UserName = "marktest", Email = "marktest@gmail.com" };
        userManager.Create(user, "Pa$$W0rD!");

        // Add User To Role
        if (!userManager.IsInRole(user.Id, "Admin"))
            {
                userManager.AddToRole(user.Id, "Admin");
            }


    }

我希望有帮助,

标记

Answer 2

生活中最简单的事情;

bool isAdmin= User.IsInRole("admin")