RadioButton

GroupName属性:此按钮所属组,如果不设置该属性,可以多选择

拖放两个RadioButton,设置GroupName,两个RadioButton添加同一个事件ReadioButton_CheckedChanged

<body>
    <form id="form1" runat="server">
    <div>
        请选择您要学的方向:
        <asp:RadioButton ID="rbCSharp" runat="server"
            oncheckedchanged="ReadioButton_CheckedChanged" Text="C#"
            AutoPostBack="true" GroupName="Language" />
        <asp:RadioButton ID="rbJava" runat="server" Text="Java" GroupName="Language"
            oncheckedchanged="ReadioButton_CheckedChanged" AutoPostBack="true" />
    </div>
    </form>
</body>

打开cs

protected void ReadioButton_CheckedChanged(object sender, EventArgs e)
    {
        if (rbCSharp.Checked)
        {
            Response.Write("您选择的是C#！");
        }
        else if (rbJava.Checked)
        {
            Response.Write("您选择的是Java!");
        }
    }