如何设置使用ASP.Net无线电输入标签检查的价值？ [英] How to set checked value for a radio input tag using ASP.Net?

问题描述

我有这种无线电标签：

<input name="phoneRadio" class="phoneRadio" id="rbDefaultPhone" 
    type="radio" checked="<%# GetIsChecked(Eval("IsDefault")) %>"/>

在一个中继器和GetIsChecked是一个C＃函数返回bool值，我的问题，即它不影响单选按钮的正确方法的检验值，
任何一个知道如何解决这个问题？

in a repeater and GetIsChecked is a c# function which return bool value, my problem that its not affecting the checked value of the radio button the right way, Any one know how to fix that?

推荐答案

就具有检查在输入属性是足以使它检查。在HTML中，你只需要拥有在那里检查，在XHTML中，它应该是检查=选中，但无论哪种方式，你要排除整个属性，如果未选中它。

Just having the checked attribute on the input is enough to make it checked. In HTML, you just need to have checked in there, in XHTML, it should be checked="checked", but either way, you'll want to exclude the whole attribute if it isn't checked.

这就是 GetIsChecked 应（改名和）返回或者检查='检查'。或的String.Empty 。然后，您将调用它只是在输入标签本身，而不是作为的值检查属性（你应该删除）。它会是这个样子：

That is, GetIsChecked should (be renamed and) return either "checked='checked'" or String.Empty. You will then call it just in the input tag itself, not as the value for the checked attribute (which you should remove). It'll look something like this:

<input name="phoneRadio" class="phoneRadio" id="rbDefaultPhone" type="radio" <%# GetChecked(Eval("IsDefault"))%> />

＆NBSP;

protected string GetChecked(object isDefault)
{
    return (bool)isDefault ? "checked='checked'" : string.Empty;
}

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