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C# ASP.NET MVC Forms Adding Form Validation Adding Server-Side Validations Using ModelState

Posted by Sachini Hansini Nawalaella
Sachini Hansini Nawalaella
2,842 Points

ASP.NET MVC forms

In IssuesController.cs complete the server-side validation rule that enforces if the issue severity is "Critical" that the Issue.Email property is not null or empty. The conditional logic for this validation rule has already been added to the Report POST action method. Add a call to the ModelState.AddModelError method where the TODO comment is located. Pass in the string "Email" for the key parameter value and the string "The Email field is required for critical issues." for the errorMessage parameter.

I DONT UNDERSTAND THE QUESTION>>>PLEASE HELP ME

IssuesController.cs 
using System.Web.Mvc;
using IssueReporter.Data;
using IssueReporter.Models;

namespace IssueReporter.Controllers
{
    public class IssuesController : Controller
    {
        private IssuesRepository _issuesRepository;

        public IssuesController()
        {
            _issuesRepository = new IssuesRepository();
        }

        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Report()
        {
            var issue = new Issue();

            SetupDepartmentsSelectListItems();

            return View(issue);
        }

        [HttpPost]
        public ActionResult Report(Issue issue)
        {
            if (issue.Severity == Issue.SeverityLevel.Critical && string.IsNullOrEmpty(issue.Email))
            {
             if(ModelState.IsNullOrEmpty("Email") && issue.Email <=0)
             {
             ModelState.AddModelError("The Email field is required for critical issues."); 
             }
            }

            if (ModelState.IsValid)
            {
                _issuesRepository.AddIssue(issue);

                return RedirectToAction("Index");
            }

            SetupDepartmentsSelectListItems();

            return View(issue);
        }

        private void SetupDepartmentsSelectListItems()
        {
            ViewBag.DepartmentsSelectListItems = new SelectList(
                Data.Data.Departments, "Id", "Name");
        }
    }
}

2 Answers

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

You're working to hard.

You apparently missed where the instructions said, "The conditional logic for this validation rule has already been added to the Report POST action method." So you don't need that if statement at all.

But when you call ModelState.AddModelError, remember that it takes two arguments. So be sure to provide both.

Steven Hughes
Steven Hughes
17,974 Points
Steven Hughes
Steven Hughes
17,974 Points

What was stated above was actually a very good hint in fact it worked for me. What this exercise is try to teach is how to target the field. At least that was the way I read it. I hope this helps anyone looking at it.

if (issue.Severity == Issue.SeverityLevel.Critical && string.IsNullOrEmpty(issue.Email)) <----provided code { // TODO Use the ModelState.AddModelError method to add an error message for the "Email" field. ModelState.AddModelError("Email", "The Email field is required for critical issues."); //"Email" is called from issue.Email but because it is a string you can target it //with "Email"
}