RadioButton Web 服务器控件声明性语法


<asp:RadioButton ????AccessKey="string" ????AutoPostBack="True\|False" ????BackColor="color name\|#dddddd" ????BorderColor="color name\|#dddddd" ????BorderStyle="NotSet\|None\|Dotted\|Dashed\|Solid\|Double\|Groove\|Ridge\| Inset\|Outset" ????BorderWidth="size" ????CausesValidation="True\|False" ????Checked="True\|False" ????CssClass="string" ????Enabled="True\|False" ????EnableTheming="True\|False" ????EnableViewState="True\|False" ????Font-Bold="True\|False" ????Font-Italic="True\|False" ????Font-Names="string" ????Font-Overline="True\|False" ????Font-Size="string\|Smaller\|Larger\|XX-Small\|X-Small\|Small\|Medium\| Large\|X-Large\|XX-Large" ????Font-Strikeout="True\|False" ????Font-Underline="True\|False" ????ForeColor="color name\|#dddddd" ????GroupName="string" ????Height="size" ????ID="string" ????OnCheckedChanged="CheckedChanged event handler" ????OnDataBinding="DataBinding event handler" ????OnDisposed="Disposed event handler" ????OnInit="Init event handler" ????OnLoad="Load event handler" ????OnPreRender="PreRender event handler" ????OnUnload="Unload event handler" ????runat="server" ????SkinID="string" ????Style="string" ????TabIndex="integer" ????Text="string" ????TextAlign="Left\|Right" ????ToolTip="string" ????ValidationGroup="string" ????Visible="True\|False" ????Width="size" />

<asp:RadioButton
????AccessKey="string"
????AutoPostBack="True|False"
????BackColor="color name|#dddddd"
????BorderColor="color name|#dddddd"
????BorderStyle="NotSet|None|Dotted|Dashed|Solid|Double|Groove|Ridge|
        Inset|Outset"
????BorderWidth="size"
????CausesValidation="True|False"
????Checked="True|False"
????CssClass="string"
????Enabled="True|False"
????EnableTheming="True|False"
????EnableViewState="True|False"
????Font-Bold="True|False"
????Font-Italic="True|False"
????Font-Names="string"
????Font-Overline="True|False"
????Font-Size="string|Smaller|Larger|XX-Small|X-Small|Small|Medium|
        Large|X-Large|XX-Large"
????Font-Strikeout="True|False"
????Font-Underline="True|False"
????ForeColor="color name|#dddddd"
????GroupName="string"
????Height="size"
????ID="string"
????OnCheckedChanged="CheckedChanged event handler"
????OnDataBinding="DataBinding event handler"
????OnDisposed="Disposed event handler"
????OnInit="Init event handler"
????OnLoad="Load event handler"
????OnPreRender="PreRender event handler"
????OnUnload="Unload event handler"
????runat="server"
????SkinID="string"
????Style="string"
????TabIndex="integer"
????Text="string"
????TextAlign="Left|Right"
????ToolTip="string"
????ValidationGroup="string"
????Visible="True|False"
????Width="size"
/>

RadioButton 服务器控件在 Web 窗体页上创建一个单选按钮。通过设置 Text 属性指定要在控件中显示的文本。该文本可显示在单选按钮的左侧或右侧。设置 TextAlign 属性以控制该文本显示在哪一侧。如果为每个 RadioButton 控件指定了相同的 GroupName，则可以将多个单选按钮分为一组。将单选按钮分为一组将只允许从该组中进行互相排斥的选择。

注意
您还可以使用 RadioButtonList 控件。对于使用数据绑定创建一组单选按钮而言，RadioButtonList 控件更易于使用，而单个 RadioButton 控件则使您能够更好地控制布局。

若要确定 RadioButton 控件是否已选中，请测试 Checked 属性。

警告
文本在 RadioButton 控件中显示之前并非 HTML 编码形式。这使得可以在文本中的 HTML 标记中嵌入脚本。如果控件的值是由用户输入的，请务必要对输入值进行验证以防止出现安全漏洞。

有关 RadioButton Web 服务器控件的属性和事件的详细信息，请参见 RadioButton 类文档。

下面的示例演示如何使用 RadioButton 控件为用户提供一组互斥的选项。

Visual Basic?	复制代码
<%@ Page Language="VB" AutoEventWireup="True" %> <html> <head> <script language="VB" runat="server"> Sub SubmitBtn_Click(Sender As Object, e As EventArgs) If Radio1.Checked Then Label1.Text = "You selected " & Radio1.Text ElseIf Radio2.Checked Then Label1.Text = "You selected " & Radio2.Text ElseIf Radio3.Checked Then Label1.Text = "You selected " & Radio3.Text End If End Sub </script> </head> <body> <h3>RadioButton Example</h3> <form runat=server> <h4>Select the type of installation you want to perform:</h4> <asp:RadioButton id=Radio1 Text="Typical" Checked="True" GroupName="RadioGroup1" runat="server" /><br> This option installs the features most typically used. <i>Requires 1.2 MB disk space.</i><p> <asp:RadioButton id=Radio2 Text="Compact" GroupName="RadioGroup1" runat="server"/><br> This option installs the minimum files required to run the product. <i>Requires 350 KB disk space.</i><p> <asp:RadioButton id=Radio3 runat="server" Text="Full" GroupName="RadioGroup1" /><br> This option installs all features for the product. <i>Requires 4.3 MB disk space.</i><p> <asp:button text="Submit" OnClick="SubmitBtn_Click" runat=server/> <asp:Label id=Label1 font-bold="true" runat="server" /> </form> </body> </html>

Visual Basic?

复制代码

<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
 <head>
 
     <script language="VB" runat="server">

    Sub SubmitBtn_Click(Sender As Object, e As EventArgs)
        
        If Radio1.Checked Then
            Label1.Text = "You selected " & Radio1.Text
        ElseIf Radio2.Checked Then
            Label1.Text = "You selected " & Radio2.Text
        ElseIf Radio3.Checked Then
            Label1.Text = "You selected " & Radio3.Text
        End If
    End Sub
 
     </script>
 
 </head>
 <body>
 
     <h3>RadioButton Example</h3>
 
     <form runat=server>
     
         <h4>Select the type of installation you want to perform:</h4>
     
         <asp:RadioButton id=Radio1 Text="Typical" Checked="True" GroupName="RadioGroup1" runat="server" /><br>
         
         This option installs the features most typically used.  <i>Requires 1.2 MB disk space.</i><p>
             
         <asp:RadioButton id=Radio2 Text="Compact" GroupName="RadioGroup1" runat="server"/><br>
         
         This option installs the minimum files required to run the product.  <i>Requires 350 KB disk space.</i><p>
          
         <asp:RadioButton id=Radio3 runat="server" Text="Full" GroupName="RadioGroup1" /><br>
         
         This option installs all features for the product.  <i>Requires 4.3 MB disk space.</i><p>
 
         <asp:button text="Submit" OnClick="SubmitBtn_Click" runat=server/>
 
         <asp:Label id=Label1 font-bold="true" runat="server" />
             
     </form>
 
 </body>
 </html>

C#?	复制代码
<%@ Page Language="C#" AutoEventWireup="True" %> <html> <head> <script language="C#" runat="server"> void SubmitBtn_Click(Object Sender, EventArgs e) { if (Radio1.Checked) { Label1.Text = "You selected " + Radio1.Text; } else if (Radio2.Checked) { Label1.Text = "You selected " + Radio2.Text; } else if (Radio3.Checked) { Label1.Text = "You selected " + Radio3.Text; } } </script> </head> <body> <h3>RadioButton Example</h3> <form runat=server> <h4>Select the type of installation you want to perform:</h4> <asp:RadioButton id=Radio1 Text="Typical" Checked="True" GroupName="RadioGroup1" runat="server" /><br> This option installs the features most typically used. <i>Requires 1.2 MB disk space.</i><p> <asp:RadioButton id=Radio2 Text="Compact" GroupName="RadioGroup1" runat="server"/><br> This option installs the minimum files required to run the product. <i>Requires 350 KB disk space.</i><p> <asp:RadioButton id=Radio3 runat="server" Text="Full" GroupName="RadioGroup1" /><br> This option installs all features for the product. <i>Requires 4.3 MB disk space.</i><p> <asp:button text="Submit" OnClick="SubmitBtn_Click" runat=server/> <asp:Label id=Label1 font-bold="true" runat="server" /> </form> </body> </html>

C#?

复制代码

<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
 <head>
 
     <script language="C#" runat="server">
 
         void SubmitBtn_Click(Object Sender, EventArgs e) {
         
             if (Radio1.Checked) {
                 Label1.Text = "You selected " + Radio1.Text;
             }
             else if (Radio2.Checked) {
                 Label1.Text = "You selected " + Radio2.Text;
             }
             else if (Radio3.Checked) {
                 Label1.Text = "You selected " + Radio3.Text;
             }
         }
 
     </script>
 
 </head>
 <body>
 
     <h3>RadioButton Example</h3>
 
     <form runat=server>
     
         <h4>Select the type of installation you want to perform:</h4>
     
         <asp:RadioButton id=Radio1 Text="Typical" Checked="True" GroupName="RadioGroup1" runat="server" /><br>
         
         This option installs the features most typically used.  <i>Requires 1.2 MB disk space.</i><p>
             
         <asp:RadioButton id=Radio2 Text="Compact" GroupName="RadioGroup1" runat="server"/><br>
         
         This option installs the minimum files required to run the product.  <i>Requires 350 KB disk space.</i><p>
          
         <asp:RadioButton id=Radio3 runat="server" Text="Full" GroupName="RadioGroup1" /><br>
         
         This option installs all features for the product.  <i>Requires 4.3 MB disk space.</i><p>
 
         <asp:button text="Submit" OnClick="SubmitBtn_Click" runat=server/>
 
         <asp:Label id=Label1 font-bold="true" runat="server" />
             
     </form>
 
 </body>
 </html>

参考

RadioButton

其他资源

Web 服务器控件语法

备注

示例

请参见

参考

其他资源