public async Task <IHttpActionResult> Register_Company(RegisterCompany model)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var user = new ApplicationUser()
            {
                UserName = model.Email, Email = model.Email
            };

            IdentityResult result = await UserManager.CreateAsync(user, model.Password);

            if (result.Succeeded)
            {
                var UserId = UserManager.FindByEmail(model.Email);
                CompanyProvider.SaveCompanyInfo(model, UserId.Id);
                CompanyProvider.SaveCategory(model, UserId.Id);
                UserManager.AddToRole(UserId.Id, "Company");
            }

            if (!result.Succeeded)
            {
                return(GetErrorResult(result));
            }

            return(Ok());
        }