[Last Call] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

C#, Valid ModelState fails .isValid

Posted on 2012-03-15
1
Medium Priority
?
933 Views
Last Modified: 2012-03-16
********************* SEARCH CONTROLLER *************************
    //
    // GET: /Search/Create

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

    //
    // POST: /Search/Create

    [HttpPost]
    public ActionResult Create(Search search)
    {
      search.Created = DateTime.Now;

      search. SearchSet = "test data";
      search. URLParameter  = 1432567389;
     
    if (ModelState.IsValid)
      {
         _db.Searchs.Add(search);
        _db.SaveChanges();
        return RedirectToAction("Index");
     
      }

     return View(search);
    }

************************* SEARCH CLASS ***********************

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;

namespace TalentProfile.Models
{
  public class Search
  {
    public int Id { get; set; }
      [Required]
    public int URLParameter { get; set; }
      [Required, MaxLength(50, ErrorMessage = "Client must be 50 characters or less")]
    public string Client { get; set; }
      [DataType(DataType.MultilineText), StringLength(150, ErrorMessage = "{0} must be {1} characters or less")]
    public string Notes { get; set; }
      [Required]
    public string SearchSet { get; set; }
      [Required]
    public DateTime Created { get; set; }
  }
}

If I run in debug all the fields in the class are properly set but it fails ModelState.isValid.  If I drill into the ModelState.isValid it is false.  Drilling down further I find the error “The SearchSet field is required”.
The SearchSet field is properly set to “test data”.  If I remove the ModelState.isValid check the save to the database succeeds.

Why am I getting the “field is required” error if the field contains valid data.

Thanks,

Bob


****** Updated Search Controller  and Create View ***************

//
// GET: /Search/Create

public ActionResult Create()
{
Search search = new Search();
search.SearchSet = "test Data";
return View(search); }

//
// POST: /Search/Create

[HttpPost]
public ActionResult Create(Search search)
{
search.Created = DateTime.Now;

search.URLParameter = 1435267836;

if (ModelState.IsValid)
{
_db.Searchs.Add(search);
_db.SaveChanges();
return RedirectToAction("Index");
}
return View(search);
}



In view put:  @Html.HiddenFor(model => model.SearchSet)
0
Comment
Question by:Bobmumm
1 Comment
 

Accepted Solution

by:
Bobmumm earned 0 total points
ID: 37730198
When the form is posted back to the POST action a Search object is created.  Created and URLParameter are DateTime and int fields are non-nullable and are set to 01/01/0001 and 0 by default.  SearchSet is a string whose default is null, thus the ModelState fails on SearchSet.  Drilling down into ModleState shows that it only checks the string fields (Client, Notes and SearchSet), Client and Notes are set in the view.  This is why you can set the DateTime and int but not the string fields in the POST action.  Passing the view a Search object with the SearchSet field set to a non-null value in the GET action and then exposing SearchSet with a @Html.HiddenFor  resolves the problem.  See updated post with the revised code.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this Article, I will provide a few tips in problem and solution manner. Opening an ASPX page in Visual studio 2003 is very slow. To make it fast, please do follow below steps:   Open the Solution/Project. Right click the ASPX file to b…
A quick way to get a menu to work on our website, is using the Menu control and assign it to a web.sitemap using SiteMapDataSource. Example of web.sitemap file: (CODE) Sample code to add to the page menu: (CODE) Running the application, we wi…
This Micro Tutorial will teach you how to add a cinematic look to any film or video out there. There are very few simple steps that you will follow to do so. This will be demonstrated using Adobe Premiere Pro CS6.
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
Suggested Courses

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question