CustomValidator.ServerValidate Kejadian

Referensi

Definisi

Ruang nama:: System.Web.UI.MobileControls

Rakitan:: System.Web.Mobile.dll

Penting

Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.

Terjadi ketika CustomValidator memvalidasi nilai ControlToValidate properti . API ini kedaluarsa. Untuk informasi tentang cara mengembangkan aplikasi seluler ASP.NET, lihat Situs & Mobile Apps dengan ASP.NET.

public:
 event System::Web::UI::WebControls::ServerValidateEventHandler ^ ServerValidate;

[System.ComponentModel.Bindable(false)]
public event System.Web.UI.WebControls.ServerValidateEventHandler ServerValidate;

[<System.ComponentModel.Bindable(false)>]
member this.ServerValidate : System.Web.UI.WebControls.ServerValidateEventHandler

Public Custom Event ServerValidate As ServerValidateEventHandler

Jenis Acara

ServerValidateEventHandler

Atribut: BindableAttribute

Contoh

Contoh berikut menunjukkan cara menjebak ServerValidate peristiwa untuk menambahkan logika guna memvalidasi halaman.

<%@ Page Language="C#" 
    Inherits="System.Web.UI.MobileControls.MobilePage" %>
<%@ Register TagPrefix="mobile" 
    Namespace="System.Web.UI.MobileControls" 
    Assembly="System.Web.Mobile" %>

<script runat="server">
    // If the page validates, go to page 2
    protected void Submit_Click(Object sender, EventArgs e)
    {
        if (Page.IsValid)
        {
            ActiveForm = Form2;
        }
    }
    
    // Validate whether the number is even
    private void ServerValidate(object source, 
        ServerValidateEventArgs args)
    {
        // Convert the text to a number
        int num;
        Int32.TryParse(numberBox.Text, out num);
        // Test for an even number
        if (num > 0)
            args.IsValid = ((num % 2) == 0);
        else
            args.IsValid = false;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <mobile:form id="Form1" runat="server">
        <mobile:Label ID="Label1" runat="server">
            Please enter an even number greater than zero.
        </mobile:Label>
        <mobile:TextBox ID="numberBox" Runat="server" 
            Numeric="true" MaxLength="2" />
        <mobile:CustomValidator ID="CustomValidator1" 
            ControlToValidate="numberBox"
            OnServerValidate="ServerValidate" runat="server">
            Your number is not an even number.
        </mobile:CustomValidator>
        <mobile:Command ID="Command1" runat="server" 
            OnClick="Submit_Click">
            Submit
        </mobile:Command>
    </mobile:form>
    <mobile:Form id="Form2" runat="server">
        <mobile:Label ID="Label2" runat="server">
            Your number is an even number.
        </mobile:Label>
    </mobile:Form>
</body>
</html>

<%@ Page Language="VB" 
    Inherits="System.Web.UI.MobileControls.MobilePage" %>
<%@ Register TagPrefix="mobile" 
    Namespace="System.Web.UI.MobileControls" 
    Assembly="System.Web.Mobile" %>

<script runat="server">
    ' If the page validates, go to page 2
    Protected Sub Submit_Click(ByVal sender As Object, ByVal e As EventArgs)
        If (Page.IsValid) Then
            ActiveForm = Form2
        End If
    End Sub
    
    ' Validate whether the number is even
    Private Sub ServerValidate(ByVal source As Object, _
        ByVal args As ServerValidateEventArgs)
    
        ' Convert the text to a number
        Dim num As Integer
        Integer.TryParse(numberBox.Text, num)
        ' Test for an even number
        If (num > 0) Then
            args.IsValid = ((num Mod 2) = 0)
        Else
            args.IsValid = False
        End If
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <mobile:form id="Form1" runat="server">
        <mobile:Label ID="Label1" runat="server">
            Please enter an even number greater than zero.
        </mobile:Label>
        <mobile:TextBox ID="numberBox" Runat="server" 
            Numeric="true" MaxLength="2" />
        <mobile:CustomValidator ID="CustomValidator1" 
            ControlToValidate="numberBox"
            OnServerValidate="ServerValidate" runat="server">
            Your number is not an even number.
        </mobile:CustomValidator>
        <mobile:Command ID="Command1" runat="server" 
            OnClick="Submit_Click">
            Submit
        </mobile:Command>
    </mobile:form>
    <mobile:Form id="Form2" runat="server">
        <mobile:Label ID="Label2" runat="server">
            Your number is an even number.
        </mobile:Label>
    </mobile:Form>
</body>
</html>

Keterangan

Jika metode terdaftar dengan peristiwa ini, metode dipanggil dengan nilai ControlToValidate properti . Validasi hanya berhasil jika penanganan aktivitas ini mengembalikan true.

Berlaku untuk

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