public async Task <IActionResult> AddAdmin([FromForm] GetAllAdminViewModel model)
        {
            if (!this.ModelState.IsValid)
            {
                return(this.View(model));
            }

            var admin = this.dbContext.Roles
                        .FirstOrDefault(x => x.Name == GlobalConstants.AdministratorRoleName);
            var user = this.dbContext.Users
                       .FirstOrDefault(x => x.Email == model.Add.Email);

            if (admin != null && user != null)
            {
                await this.dbContext.UserRoles
                .AddAsync(new IdentityUserRole <string>
                {
                    UserId = user.Id,
                    RoleId = admin.Id,
                });

                await this.dbContext.SaveChangesAsync();

                return(this.View("AdminCreateAdmin"));
            }
            else if (user != null)
            {
                var isAdmin = this.dbContext.UserRoles
                              .FirstOrDefault(x => x.RoleId == admin.Id && x.UserId == user.Id);

                if (isAdmin == null)
                {
                    await this.dbContext.UserRoles
                    .AddAsync(new IdentityUserRole <string>
                    {
                        UserId = user.Id,
                        RoleId = admin.Id,
                    });

                    await this.dbContext.SaveChangesAsync();

                    return(this.View("AdminCreateAdmin"));
                }
            }

            return(this.RedirectToAction("AddAdmin"));
        }
        public IActionResult All()
        {
            var adminRole = this.dbContext.Roles
                            .Where(x => x.Name == GlobalConstants.AdministratorRoleName)
                            .FirstOrDefault();
            var user = this.dbContext.Users
                       .OrderBy(x => x.Name)
                       .Where(x => x.Roles.Any(y => y.RoleId == adminRole.Id) && x.Name != "Admin")
                       .ToList();

            var viewModel = new GetAllAdminViewModel()
            {
                Users = user,
            };

            return(this.View(viewModel));
        }