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HtmlInputCheckBox.ServerChange Kejadian

  • Referensi

Definisi

Ruang nama:
System.Web.UI.HtmlControls
Rakitan:
System.Web.dll

Terjadi ketika halaman Web dikirimkan ke server dan HtmlInputCheckBox kontrol berubah status dari posting sebelumnya.

public:
 event EventHandler ^ ServerChange;
public event EventHandler ServerChange;
member this.ServerChange : EventHandler 
Public Custom Event ServerChange As EventHandler

Jenis Acara

EventHandler

Contoh

Contoh kode berikut menunjukkan cara menentukan dan mengkodekan handler untuk peristiwa tersebut ServerChange .

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>HtmlInputCheckBox Sample</title>
<script language="C#" runat="server">

      void Button1_Click(object sender, EventArgs e) 
      { 

         if (Prev_Check_State.Value == Check1.Checked.ToString())
            Span2.InnerHtml = "CheckBox1 did not change state between clicks.";

         if (Check1.Checked == true)
         {          
            Span1.InnerHtml = "CheckBox1 is selected!";
            Prev_Check_State.Value="True";
         }         
         else
         { 
            Span1.InnerHtml = "CheckBox1 is not selected!";
            Prev_Check_State.Value="False";
         }
         
      }

      void Server_Changed(object sender, EventArgs e) 
      {
         Span2.InnerHtml = "CheckBox1 changed state between clicks.";
      }

   </script>

</head>

<body>

   <h3>HtmlInputCheckBox Sample</h3>

   <form id="form1" runat="server">

      <input id="Check1" 
             type="checkbox"
             onserverchange="Server_Changed" 
             runat="server"/> 
 
      CheckBox1   

      <span id="Span1" 
            style="color:red" 
            runat="server"/>

      <br />

      <input type="button" 
             id="Button1" 
             value="Enter" 
             onserverclick="Button1_Click" 
             runat="server"/>
      
      <br /><br />

      <span id="Span2" 
            runat="server"/>

      <input type="hidden" id="Prev_Check_State"
                       visible="false"
                       runat="server"/>

   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>HtmlInputCheckBox Sample</title>
<script language="VB" runat="server">

    Sub Button1_Click(sender As Object, e As EventArgs)
        
        If Prev_Check_State.Value = Check1.Checked.ToString() Then
            Span2.InnerHtml = "CheckBox1 did not change state between clicks."
        End If
        If Check1.Checked = True Then
            Span1.InnerHtml = "CheckBox1 is selected!"
            Prev_Check_State.Value = "True"
        Else
            Span1.InnerHtml = "CheckBox1 is not selected!"
            Prev_Check_State.Value = "False"
        End If
    End Sub 'Button1_Click
     

    Sub Server_Changed(sender As Object, e As EventArgs)
        Span2.InnerHtml = "CheckBox1 changed state between clicks."
    End Sub 'Server_Changed

  </script>

</head>

<body>

   <h3>HtmlInputCheckBox Sample</h3>

   <form id="form1" runat="server">

      <input id="Check1" 
             type="checkbox"
             onserverchange="Server_Changed" 
             runat="server"/> 
 
      CheckBox1   

      <span id="Span1" 
            style="color:red" 
            runat="server"/>

      <br />

      <input type="button" 
             id="Button1" 
             value="Enter" 
             onserverclick="Button1_Click" 
             runat="server"/>
      
      <br /><br />

      <span id="Span2" 
            runat="server"/>

      <input type="hidden" id="Prev_Check_State"
                       visible="false"
                       runat="server"/>
   </form>

</body>
</html>

Keterangan

Kejadian ini dimunculkan ketika halaman Web dikirimkan ke server dan HtmlInputCheckBox kontrol berubah status dari posting sebelumnya.

Catatan

Kontrol harus mengaktifkan status tampilan agar ServerChange kejadian berfungsi dengan benar.

Untuk informasi selengkapnya tentang cara menangani peristiwa, lihat Menangani dan Menaikkan Peristiwa.

Berlaku untuk

Lihat juga