Очистка полей текстового поля на странице в MVC

То, что должно быть простой проблемой, почему-то ставит меня в тупик. Я новичок в MVC, так что это должно объяснить это.

Я пытаюсь очистить все поля на странице после ввода отправки.

Я видел приведенный ниже код в примерах, но не знаю, куда его поместить. Я пробовал это в своем PersonModel.vb, и он выдает ошибки. Я пробовал это в своем репозитории, где я храню свои подпрограммы и функции, и каждый раз он выдает ошибки по словам ModelState и ValueProvierResult.

ModelState.SetModelValue("Key", new ValueProviderResult(null, string.Empty, CultureInfo.InvariantCulture))

Может кто-нибудь дать мне совет, как очистить поля (текстовые поля) на странице? Я новичок в MVC и мог бы использовать некоторую помощь.

Спасибо

LW

Вот код ....

<HttpPost(), MvcReCaptcha.CaptchaValidator()> _
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") <> Nothing) Then
        m.People.Add(New PersonModel With {.Indicator = PersonIndicator.Nominator})
        addPost = True
    ElseIf Request.Form("addOwner") <> 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 < 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 <> 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 <> 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 <> 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 > 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)
11
задан Lee 3 February 2011 в 15:51
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