如何从 RadioButtonList 中获取选定的 RadioButton 对象

Question

SelectedIndexChanged事件中如何从RadioButtonList中获取选中的RadioButton对象？

好吧，为了获得更多描述，

我需要捕获在单选按钮列表中选择的单选按钮，以便在单选按钮列表自动回发时关注它

Answer 1

void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
    var script = string.Format("document.getElementById('{0}_{1}').focus();", RadioButtonList1.ClientID, RadioButtonList1.SelectedIndex);

    if (ScriptManager.GetCurrent(this) != null && ScriptManager.GetCurrent(this).IsInAsyncPostBack)
        ScriptManager.RegisterStartupScript(RadioButtonList1, typeof(RadioButtonList), Guid.NewGuid().ToString(), script, true);
    else
        ClientScript.RegisterStartupScript(typeof(RadioButtonList), Guid.NewGuid().ToString(), script, true);
}

Answer 2

试试这个：

protected void rbl_SelectedIndexChanged(object sender, EventArgs e)
    {
        RadioButtonList rbList = (RadioButtonList)sender;
        ListItem selItem = rbList.Items[rbList.SelectedIndex];
        selItem.Selected = true;
    }