HtmlInputCheckBox Konstruktor

Definition

Namespace:
System.Web.UI.HtmlControls
Assembly:
System.Web.dll

Initialisiert eine neue Instanz der HtmlInputCheckBox-Klasse.

public:
 HtmlInputCheckBox();
public HtmlInputCheckBox();
Public Sub New ()

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie eine neue Instanz der HtmlInputCheckBox Klasse erstellt und initialisiert wird.

<%@ 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 Constructor Sample</title>
<script language="C#" runat="server">
       
       
       // Create a new instance of HtmlInputCheckBox.
       HtmlInputCheckBox cb = new HtmlInputCheckBox();

       // Create a new instance of Label.
       Label label = new Label();
       
       // Create a new instance of Button.
       HtmlButton b = new HtmlButton();

       protected void Page_Load(object sender, EventArgs e)
       {
           // Define attributes of Button and Label.
           b.InnerText = "Click";
           label.Text = "checkbox";
           
           // Add controls to placeholder
           Container.Controls.Add(cb);
           Container.Controls.Add(label);
           Container.Controls.Add(new LiteralControl("<br />"));
           Container.Controls.Add(b);
           
           // Add EventHandler
           b.ServerClick += new EventHandler(button_ServerClick);

       }
       
       void button_ServerClick(object sender, EventArgs e)
       {
           switch (cb.Checked)
           {
               case true:
                   Message.InnerHtml = "Checkbox is checked.";
                   break;

               default:
                   Message.InnerHtml = "Checkbox is not checked.";
                   break;
           }
       }
</script>

</head>

<body>

   <h3>HtmlInputCheckBox Constructor Sample</h3>

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

      <asp:PlaceHolder id="Container" runat="server"></asp:PlaceHolder>    
       
      <br />
      <span id="Message" 
            style="color:red" 
            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 Constructor Sample</title>
<script language="VB" runat="server">

       ' Create a new instance of HtmlInputCheckBox.
       Dim cb As New HtmlInputCheckBox()

       ' Create a new instance of Label.
       Dim label As New Label()
       
       ' Create a new instance of Button.
       Dim b As New HtmlButton()
       
       Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
           
           ' Define attributes of Button and Label.
           b.InnerText = "Click"
           label.Text = "checkbox"
           
           ' Add controls to placeholder
           Container.Controls.Add(cb)
           Container.Controls.Add(label)
           Container.Controls.Add(New LiteralControl("<br />"))
           Container.Controls.Add(b)
           
           ' Add EventHandler
           AddHandler b.ServerClick, AddressOf button_ServerClick
          
       End Sub
       
       Sub button_ServerClick(ByVal sender As Object, ByVal e As EventArgs)
           Select Case cb.Checked
               Case True
                   Message.InnerHtml = "Checkbox is checked."
        
               Case Else
                   Message.InnerHtml = "Checkbox is not checked."
           End Select

       End Sub

</script>

</head>

<body>

   <h3>HtmlInputCheckBox Constructor Sample</h3>

   <form id="Form1" runat="server">

      <asp:PlaceHolder id="Container" runat="server"></asp:PlaceHolder>    
       
      <br />
      <span id="Message" 
            style="color:red" 
            runat="server"/>

   </form>

</body>
</html>

Hinweise

Verwenden Sie diesen Konstruktor, um eine neue Instanz der HtmlInputCheckBox Klasse zu erstellen und zu initialisieren.

Die folgende Tabelle zeigt den anfänglichen Eigenschaftswert für eine Instanz von HtmlInputCheckBox.

Eigentum Anfangswert
TagName Die Literalzeichenfolge "checkbox".

Gilt für: