<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="test.aspx.cs" Inherits="WebApp.test" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="Scripts/jquery-2.1.0.min.js"></script>
<script>
$(function () {
$("#pp input:checkbox").click(function () {
if ($("#pp :checked").size() > 2) {
alert('message');
this.checked = false;
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBoxList ID="pp" AutoPostBack="true" runat="server" OnSelectedIndexChanged="pp_SelectedIndexChanged">
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
</asp:CheckBoxList>
</div>
</form>
</body>
</html>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="Scripts/jquery-2.1.0.min.js"></script>
<script>
$(function () {
$("#pp input:checkbox").click(function () {
if ($("#pp :checked").size() > 2) {
alert('message');
this.checked = false;
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBoxList ID="pp" AutoPostBack="true" runat="server" OnSelectedIndexChanged="pp_SelectedIndexChanged">
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
<asp:ListItem Text="1" Value="1"></asp:ListItem>
</asp:CheckBoxList>
</div>
</form>
</body>
</html>
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