asp.net中checkboxlist和radiobuttonlist_.net

asp.net中checkboxlist和radiobuttonlist_javascript_02

asp.net中checkboxlist和radiobuttonlist_.net_03

asp.net中checkboxlist和radiobuttonlist_vs2010_04

asp.net中checkboxlist和radiobuttonlist_.net_05

.aspx代码如下：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RadoButtonList和CheckBoxList.aspx.cs" Inherits="RadoButtonList和CheckBoxList" %>

<!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 runat="server">
    <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <title></title>
    
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <span id="errmsg"></span>
    <asp:checkboxlist ID="Checkboxlist1" runat="server">
        <asp:ListItem>1</asp:ListItem>
        <asp:ListItem>2</asp:ListItem>
        <asp:ListItem>3</asp:ListItem>
        </asp:checkboxlist>
        <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="return emptycheck()" />
        <script type="text/javascript">
            function emptycheck() {
                var _s = $(":checked","#checkboxlist").val();
                if (_s == null) {
                    $("#errmsg").text("至少选中一项");
                return  false;
                }
                else{
                 $("#errmsg").text("");
                 return true;
                }
            }
        </script>

    </div>
    </form>
</body>
</html>


效果如下：

asp.net中checkboxlist和radiobuttonlist_vs2010_06