how to fix EntityValidationErrors - asp.net-mvc

Question

I want to update user but whene I click on submit I get this error : EntityValidationErrors in this ligne :
Ligne 335 : context.SaveChanges();
I am using Entity Framework in ASP.NET MVC project:
this this my edit action in controller :
// GET: ApplicationUsers/Edit/2 :
[AuthLog(Roles = "Super Administrateur")]
public ActionResult Edit(string id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
ApplicationUser user = context.Users.Find(id);
if (user == null)
{
return HttpNotFound();
}
return View(user);
}
// POST: ApplicationUsers/Edit/2
[AuthLog(Roles = "Super Administrateur")]
[HttpPost, ValidateInput(false), ActionName("Edit")]
[ValidateAntiForgeryToken]
public ActionResult Edit([Bind(Include = "Id,No_,RaisonSociale,Magasin,RemiseHabituelle,FamilyName,FirstName,EmailSup,Login,AffPrix,PasserCmd,EmailRespMagasin,Admin,BoursePR,Actif,IdSession,VendeurItirénant,ChargeClient,ValidOuAnnul,Email,EmailConfirmed,PasswordHash,SecurityStamp,PhoneNumber,PhoneNumberConfirmed,TwoFactorEnabled,LockoutEndDateUtc,LockoutEnabled,AccessFailedCount,UserName")] ApplicationUser applicationUser)
{
if (ModelState.IsValid)
{
context.Entry(applicationUser).State = EntityState.Modified;
context.SaveChanges();
return RedirectToAction("ListUsers","Account");
}
return View(applicationUser);
}
this is the Edit View :
<div class="form-horizontal">
<hr />
#Html.ValidationSummary(true, "", new { #class = "text-danger" })
#Html.HiddenFor(model => model.Id)
<div class="form-group">
#Html.LabelFor(model => model.Login, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.Login, new { htmlAttributes = new { #class = "form-control" } })
#Html.ValidationMessageFor(model => model.Login, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Enregistrer" class="btn btn-default" />
</div>
</div>
</div>
}

Answer 1

The solution was : that UserName attributes is required.I find this error by adding block try {} catch {} to my edit action :
public ActionResult Edit([Bind(Include = "Id,No_,RaisonSociale,Magasin,RemiseHabituelle,FamilyName,FirstName,EmailSup,Login,AffPrix,PasserCmd,EmailRespMagasin,Admin,BoursePR,Actif,IdSession,VendeurItirénant,ChargeClient,ValidOuAnnul,Email,EmailConfirmed,PasswordHash,SecurityStamp,PhoneNumber,PhoneNumberConfirmed,TwoFactorEnabled,LockoutEndDateUtc,LockoutEnabled,AccessFailedCount,UserName")] ApplicationUser applicationUser)
{
if (ModelState.IsValid)
{
context.Entry(applicationUser).State = EntityState.Modified;
try
{
context.SaveChanges();
}
catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
{
Exception raise = dbEx;
foreach (var validationErrors in dbEx.EntityValidationErrors)
{
foreach (var validationError in validationErrors.ValidationErrors)
{ string message = string.Format("{0}:{1}",
validationErrors.Entry.Entity.ToString(),
validationError.ErrorMessage);
// raise a new exception nesting
// the current instance as InnerException
raise = new InvalidOperationException(message, raise);
}
}
throw raise;
}
return RedirectToAction("ListUsers","Account");
}
return View(applicationUser);
}