如何修复用户只能在运行时选中10个复选框 [英] How to fix a user can select only 10 check boxs at run time

问题描述

我的页面中有一个复选框列表....我需要限制用户只能在10个复选框内选择...我使用复选框作为HTML的输入类型....我该怎么办？那????

I have a check box list in my page....I need to limit the user can select only within 10 checkboxes...I had use the check boxes as input type of HTML.... How can i do that????

推荐答案

OnChecked - 增加一个计数器变量

OnUnChecked - 递减计数器变量



一旦你有这个...



在支票上你可以验证计数，如果计数> 10取消选中它并向用户显示一条消息。



如果您需要更多提示，请分享一些示例代码

OnChecked -- increment a counter variable
OnUnChecked -- decrement a counter variable

Once you have this in place ..

On check you can validate the count and if count > 10 uncheck it and show a message to the user.

Please share some sample code if you need more hints

write复选框选择更改事件

和

当checkbox.checked为true时递增count变量

并在checkbox.checked为false时递减count变量。

希望这有助于......！

write checkbox selection changed event
and
increment the count variable when checkbox.checked is true
and decrement the count variable when checkbox.checked is false.
Hope this helps...!

从代码后面调用函数如下：

Call function from code behind like this:

string script = "<SCRIPT LANGUAGE='JavaScript'> ";
script += "counter()";
script += "</SCRIPT>";
Page.RegisterClientScriptBlock("ClientScript", script);

In你的页面的头部添加这样的功能：

In your page''s head section add function like this:

<script type="text/javascript">
       function counter() 
        {
           //increment or decrement variable       
                  
        }
    </script>

根据您的需要努力增加和减少。

Put some efforts to increment and decrement according to your needs.

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