title: Clearing text box fields on a page in MVC
body: <p>What should be a simple issue is stumping me for some reason. I am new to MVC so that should explain that.</p>
  
  <p>I am trying to clear all fields on a page after a submit is entered.</p>
  
  <p>I have seen the code below used in examples but dont know where to put it.  I tried it in my PersonModel.vb and it throws errors. I tried it in my Repository where I keep my subs and functions and it throws errors everytime over the word(s) ModelState and ValueProvierResult. </p>
  
  <pre><code>ModelState.SetModelValue("Key", new ValueProviderResult(null, string.Empty, CultureInfo.InvariantCulture))
  </code></pre>
  
  <p>Can someone offer some advice for me to clear out the fields(text boxes) on a page?  I am very new to MVC and could use some assistanct.</p>
  
  <p>Thanks</p>
  
  <p>LW</p>
  
  <p>Here is the code....</p>
  
  <pre><code>&lt;HttpPost(), MvcReCaptcha.CaptchaValidator()&gt; _
  Function Nominate(ByVal m As NominationModel, ByVal captchaValid As Boolean) As ActionResult
  
      Dim db = New ChampionTrees.Common.DataAccess.ChampionTreesRepository With {.UserName = "SYSTEM"}
      BindNominateDdls(db)
  
      Dim addPost As Boolean = False
      If (Request.Form("addNominator") &lt;&gt; Nothing) Then
          m.People.Add(New PersonModel With {.Indicator = PersonIndicator.Nominator})
          addPost = True
      ElseIf Request.Form("addOwner") &lt;&gt; Nothing Then
          m.People.Add(New PersonModel With {.Indicator = PersonIndicator.Owner})
          addPost = True
      Else
          For Each f In Request.Form.Keys
              If f.ToString.StartsWith("deletePerson") Then
  
                  Dim idx = f.ToString.IndexOf("n")
                  m.People.RemoveAt(Integer.Parse(f.ToString.Substring(idx + 1, f.ToString.Length - (idx + 1))))
                  addPost = True
                  Exit For
  
              End If
          Next
      End If
  
      If addPost Then
  
          For Each v In ModelState.Values.AsEnumerable()
              v.Errors.Clear()
          Next
  
          Return View(m)
  
      End If
  
      If m.Tree.Id &lt; 0 AndAlso String.IsNullOrEmpty(m.OtherName) Then
  
          Dim err As String = "Either a Common, Scientific, or Other Name must be provided."
          ModelState.AddModelError("Tree.Id", err)
          ModelState.AddModelError("OtherName", err)
  
      End If
  
      If String.IsNullOrEmpty(m.Measurement.CountyForester) = _
          String.IsNullOrEmpty(m.Measurement.OtherCountyForester) Then
  
          Dim err As String = "A County Forester must be selected or entered (but not both)."
          ModelState.AddModelError("Measurement.CountyForester", err)
          ModelState.AddModelError("Measurement.OtherCountyForester", err)
  
      End If
  
      Dim i As Integer = 0
      For Each p As PersonModel In m.People
  
          If String.IsNullOrEmpty(p.EmailAddress) AndAlso _
              (p.Phone.Phone1 Is Nothing Or p.Phone.Phone2 Is Nothing Or p.Phone.Phone3 Is Nothing) Then
  
              ModelState.AddModelError(String.Format("People[{0}].Phone", i), "Either an E-mail Address or Phone number must be provided.")
              ModelState.AddModelError(String.Format("People[{0}].Phone.Phone1", i), "")
              ModelState.AddModelError(String.Format("People[{0}].Phone.Phone2", i), "")
              ModelState.AddModelError(String.Format("People[{0}].Phone.Phone3", i), "")
              ModelState.AddModelError(String.Format("People[{0}].EmailAddress", i), " ")
  
          Else
  
              Dim int As Integer = 0
              Dim err As Boolean = False
  
              If Not p.Phone.Phone1 Is Nothing AndAlso _
                              (p.Phone.Phone1.Length &lt;&gt; 3 Or Not Integer.TryParse(p.Phone.Phone1, Int)) Then
  
                  ModelState.AddModelError(String.Format("People[{0}].Phone.Phone1", i), "")
                  err = True
              End If
              If Not p.Phone.Phone2 Is Nothing AndAlso _
                              (p.Phone.Phone2.Length &lt;&gt; 3 Or Not Integer.TryParse(p.Phone.Phone2, int)) Then
  
                  ModelState.AddModelError(String.Format("People[{0}].Phone.Phone2", i), "")
                  err = True
              End If
              If Not p.Phone.Phone3 Is Nothing AndAlso _
                  (p.Phone.Phone3.Length &lt;&gt; 4 Or Not Integer.TryParse(p.Phone.Phone3, int)) Then
  
                  ModelState.AddModelError(String.Format("People[{0}].Phone.Phone3", i), "")
                  err = True
              End If
  
              If err Then ModelState.AddModelError(String.Format("People[{0}].Phone", i), "Phone Number is not numeric.")
  
          End If
  
          If m.OwnershipType = Ownership.Public AndAlso _
              p.Indicator = PersonIndicator.Owner AndAlso _
              p.ParcelName Is Nothing Then
              ModelState.AddModelError(String.Format("People[{0}].ParcelName", i), "The Parcel Name field is required for public nominations.")
          End If
  
          i += 1
  
      Next
  
      If Not m.UseNominatorsAsOwners AndAlso _
          (From e In m.People Where e.Indicator = PersonIndicator.Owner Select e).Count = 0 Then
          ModelState.AddModelError("UseNominatorsAsOwners", "At least one Owner is required.")
      End If
  
      If Files.Count &gt; 0 AndAlso Not m.ElectronicUseAgreement Then
          ModelState.AddModelError("ElectronicUseAgreement", "The Electronic Use Agreement must be agreed to.")
      End If
  
      If Not captchaValid Then
          ModelState.AddModelError("ReCaptcha", "You did not type the verification word correctly. Please try again.")
      End If
  
      If ModelState.IsValid Then
  
          ' load our uploads from session
          For Each f In Files
              f.Value.Viewable = m.ElectronicUseAgreement
              m.Uploads.Add(f.Value)
          Next
  
          ' insert the nomination into the db
          db.InsertNomination(m)
  
          ViewData("message") = "Nomination has been submitted"
  
      End If
  
      ModelState.Clear()
      Return View(m)
  </code></pre>