通过

HtmlInputCheckBox.Checked 属性

  • 参考

定义

命名空间:
System.Web.UI.HtmlControls
程序集:
System.Web.dll

获取或设置一个值，该值指示是否选择 HtmlInputCheckBox。

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

属性值

Boolean

如果选择了 HtmlInputCheckBox 控件，则为 true；否则为 false。

属性
TypeConverterAttribute

示例

下面的代码示例演示了对从一组控件中进行选择的用户的一组 HtmlInputCheckBox 响应。

<%@ 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>

注解

使用此属性可确定是否选择了控件 HtmlInputCheckBox 。 此属性还可用于以编程方式设置控件的状态 HtmlInputCheckBox 。

适用于