ASP.NET RadioButton 与名称(组名)混淆 [英] ASP.NET RadioButton messing with the name (groupname)

问题描述

我有一个模板化控件(中继器)，列出了一些文本和其他标记.每个项目都有一个与之关联的单选按钮，使用户可以选择中继器创建的项目之一.

I got a templated control (a repeater) listing some text and other markup. Each item has a radiobutton associated with it, making it possible for the user to select ONE of the items created by the repeater.

转发器写入单选按钮，设置其 id 和生成的名称，使用默认的 ASP.NET 命名约定，使每个单选按钮成为一个完整的组".这意味着所有单选按钮都是相互独立的，不幸的是，这再次意味着我可以同时选择所有单选按钮.单选按钮具有用于设置通用名称的巧妙属性组名"，因此它们被组合在一起，因此应该相互依赖(所以我一次只能选择一个).问题是 - 这不起作用 - 转发器确保 id 和名称(控制分组)不同.

The repeater writes the radiobutton setting its id and name generated with the default ASP.NET naming convention making each radiobutton a full 'group'. This means all radiobuttons are independent on each other, which again unfortunately means I can select all radiobuttons at the same time. The radiobutton has the clever attribute 'groupname' used to set a common name, so they get grouped together and thus should be dependant (so I can only select one at a time). The problem is - this doesn't work - the repeater makes sure the id and thus the name (which controls the grouping) are different.

由于我使用了中继器(可能是列表视图或任何其他模板化数据绑定控件)，我无法使用 RadioButtonList.那我该怎么办?

Since I use a repeater (could have been a listview or any other templated databound control) I can't use the RadioButtonList. So where does that leave me?

我知道我以前遇到过这个问题并解决了它.我知道几乎每个 ASP.NET 程序员都必须拥有它，那么为什么我不能 google 并找到解决问题的可靠方法呢?我遇到了通过 JavaScript 强制分组的解决方案(丑陋！)，甚至将单选按钮作为非服务器控件处理，迫使我执行 Request.Form[name] 来读取状态.我还尝试在 PreRender 事件上覆盖 name 属性 - 不幸的是，拥有页面和 masterpage 再次覆盖此名称以反映完整的 id/name，所以我最终得到了相同的错误结果.

I know I've had this problem before and solved it. I know almost every ASP.NET programmer must have had it too, so why can't I google and find a solid solution to the problem? I came across solutions to enforce the grouping by JavaScript (ugly!) or even to handle the radiobuttons as non-server controls, forcing me to do a Request.Form[name] to read the status. I also tried experimenting with overriding the name attribute on the PreRender event - unfortunately the owning page and masterpage again overrides this name to reflect the full id/name, so I end up with the same wrong result.

如果您没有比我发布的更好的解决方案，仍然非常欢迎您发表您的想法 - 至少我会知道我的朋友 'jack' 关于 ASP.NET 有时是多么混乱的说法是正确的 ;)

If you have no better solution than what I posted, you are still very welcome to post your thoughts - at least I'll know that my friend 'jack' is right about how messed up ASP.NET is sometimes ;)

推荐答案

Google-fu: asp.net单选按钮转发器问题

Google-fu: asp.net radiobutton repeater problem

确实是 id 修改的不幸后果.我的想法是创建一个 - 或从众多可用的 - 自定义控件中选择一个，以在客户端上添加对同名的支持.

Indeed an unfortunate consequence of the id mangling. My take would be creating a - or picking one of the many available - custom control that adds support for same name on the client.

这篇关于ASP.NET RadioButton 与名称(组名)混淆的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！