<
form
id
="form1"
runat
="server"
>
<
div
align
="center"
>
<
fieldset
style
="width: 350px; height: 200px;"
>
<
table
border
="0"
cellpadding
="3"
cellspacing
="3"
>
<
tr
>
<
td
>
请选择汽车类型：
</
td
>
</
tr
>
<
tr
>
<
td
>
<
asp:CheckBoxList
ID
="chkCar"
runat
="server"
>
<
asp:ListItem
Value
="1"
Text
="奔驰汽车"
></
asp:ListItem
>
<
asp:ListItem
Value
="2"
Text
="宝马汽车"
></
asp:ListItem
>
<
asp:ListItem
Value
="3"
Text
="奥迪汽车"
></
asp:ListItem
>
<
asp:ListItem
Value
="4"
Text
="现代汽车"
></
asp:ListItem
>
<
asp:ListItem
Value
="5"
Text
="丰田汽车"
></
asp:ListItem
>
</
asp:CheckBoxList
>
</
td
>
</
tr
>
<
tr
>
<
td
>
<
asp:Button
ID
="btnSubmit"
runat
="server"
Text
="提交"
/>
</
td
>
</
tr
>
</
table
>
</
fieldset
>
<
asp:CustomValidator
ID
="ctvCar"
runat
="server"
Display
="Dynamic"
ErrorMessage
="至少选择三种车！"
ForeColor
="Red"
ClientValidationFunction
="ctvCar_Validation"
></
asp:CustomValidator
>
</
div
>
</
form
>
<
head
id
="Head1"
runat
="server"
>
<
title
>
Recipe15
</
title
>
<
script
type
="text/javascript"
src
="Scripts/jquery-1.4.1-vsdoc.js"
></
script
>
<
script
type
="text/javascript"
>
function
ctvCar_Validation(sender, args) {
//
CustomValidator控件通过自定义函数的参数args属性IsValid来判断是否验证通过
args.IsValid
=
($(
"
#chkCar input:checked
"
).length
>=
3
);
}
</
script
>
</
head
>