Question

我是Identity 2和C＃的新手。

我想创建一个与当前所选角色的用户关联的电子邮件地址列表，由role.RoleId引用。

我做错了，我只知道......

到目前为止我已经尝试了

List<UsersEmailViewModel> EmailList = new List<UsersEmailViewModel>() { new UsersEmailViewModel { Email = ???? } }

不确定如何为角色中的每个用户创建列表条目。

也开始尝试

List<UsersEmailViewModel> EmailList = from l in UserManager.Users.Where(x => x.Roles.Any(y => y.RoleId == role.RoleId )) select new UsersEmailViewModel { Email = l.email }

但是得到一个无法转换的错误。

if (user.Roles.Count() > 0)
{
    List<IdentityUserRole> userRoles = user.Roles.ToList();

    foreach (var role in userRoles)
    {
        var dbrole = RoleManager.Roles.SingleOrDefault(x => x.Id == role.RoleId);
        if ((UserManager.IsInRole(User.Identity.GetUserId(), "Admin")) || (UserManager.IsInRole(User.Identity.GetUserId(), "SuperAdmin")))
        {
            boundUser.Roles.Add(new RoleViewModel()
            {
                RoleName = dbrole.Name,
                RoleId = role.RoleId,
                //EmailList = Want to create list of only Email Addresses of Accounts in Role

            });
        }
        else
        {
            boundUser.Roles.Add(new RoleViewModel()
            {
                RoleName = dbrole.Name,
                RoleId = "Redacted",
                EmailList = new List<UsersEmailViewModel>() { new UsersEmailViewModel { Email = "Redacted" } }
            });
        }
    }
}

public class RoleViewModel
{
    public string RoleId { get; set; }
    public string RoleName { get; set; }
    public List<UsersEmailViewModel> EmailList { get; set; }
}

public class UsersEmailViewModel
{
    public string Email { get; set; }
}

Answer 1

尝试以下方法：

List<string> list = new List<string>();
var rs = context.Roles.Where(x => x.Name == role).SingleOrDefault().Id; // where role is your role in which you want to find
var users = context.Users.Where(item => item.Roles.Any(x => x.RoleId == rs)).ToList();
foreach (var a in users)
{
    list.Add(a.Email);
}

创建此列表的最佳方法是什么？

1 个答案: