HtmlInputCheckBox.Checked 屬性

定義

命名空間:
System.Web.UI.HtmlControls
組件:
System.Web.dll

取得或設定一個值，表示是否 HtmlInputCheckBox 被選中。

public:
 property bool Checked { bool get(); void set(bool value); };
public bool Checked { get; set; }
[System.ComponentModel.TypeConverter(typeof(System.Web.UI.MinimizableAttributeTypeConverter))]
public bool Checked { get; set; }
member this.Checked : bool with get, set
[<System.ComponentModel.TypeConverter(typeof(System.Web.UI.MinimizableAttributeTypeConverter))>]
member this.Checked : bool with get, set
Public Property Checked As Boolean

屬性值

Boolean

true若HtmlInputCheckBox選擇控制項;否則，。 false

屬性
TypeConverterAttribute

範例

以下程式碼範例展示了使用者從一組 HtmlInputCheckBox 控制項中選擇時的回應。

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

<!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"  >
  <script language="C#" runat="server">

    protected void SubmitBtn_Click(object sender, EventArgs e)
    {
      if (Basketball.Checked)
      {
        // You like basketball
      }
      
      if (Football.Checked)
      {
        // You like football
      }
      
      if (Soccer.Checked)
      {
        // You like soccer
      }
    
    }
</script>
    <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
       <form id="Form1" method="post" runat="server">
         Enter Interests:  
         <input id="Basketball" checked="checked" type="checkbox" runat="server" /> Basketball
         <input id="Football" type="checkbox" runat="server" /> Football
         <input id="Soccer" type="checkbox" runat="server" /> Soccer
                 
         <input id="Button1" type="button" value="Enter" onserverclick="SubmitBtn_Click" 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" >
    <script language="VB" runat="server">
       Sub SubmitBtn_Click (Source As Object, ByVal E as EventArgs)
           If (Basketball.Checked = true) Then 
               ' You like basketball
           End If
 
           If (Football.Checked = true) Then
               ' You like football
           End If
 
           If (Soccer.Checked = true) Then
               ' You like soccer
           End If
       End Sub
    </script>
  
    <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
       <form id="form1" method="post" runat="server">
         Enter Interests:  
         <input id="Basketball" checked="checked" type="checkbox" runat="server" /> Basketball
         <input id="Football" type="checkbox" runat="server" /> Football
         <input id="Soccer" type="checkbox" runat="server" /> Soccer
                 
         <input type="button" value="Enter" onserverclick="SubmitBtn_Click" runat="server" />
        </form>
    </body>
 </html>

備註

利用此特性判斷是否選擇了控制項 HtmlInputCheckBox 。 此特性也可用於程式化設定控制項的 HtmlInputCheckBox 狀態。

適用於