获取不在 ASP .NET 列表中的选定单选按钮 [英] Get selected radio button not in a list in ASP .NET

问题描述

我有许多属于一个组的单选按钮.我没有将它们列在列表中，因为它们都散落在页面上.如何轻松获取选定的单选按钮?

I have a number of radio buttons belonging to a group. I don't have them in a list, as they are all scattered around the page. How can I easily get the selected radio button?

推荐答案

也许不是最快的方法，但应该可以:

Maybe not the fastest way, but something like this should work:

private RadioButton GetSelectedRadioButton(string groupName)
{
    return GetSelectedRadioButton(Controls, groupName);
}

private RadioButton GetSelectedRadioButton(ControlCollection controls, string groupName)
{
    RadioButton retval = null;

    if (controls != null)
    {
        foreach (Control control in controls)
        {
            if (control is RadioButton)
            {
                RadioButton radioButton = (RadioButton) control;

                if (radioButton.GroupName == groupName && radioButton.Checked)
                {
                    retval = radioButton;
                    break;
                }
            }

            if (retval == null)
            {
                retval = GetSelectedRadioButton(control.Controls, groupName);
            }
        }
    }

    return retval;
}

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