多个 RadionButtonList 的 SelectedIndexChanged

Question

我有 3 个 RadionButtonList 有意连接到同一个 SelectedIndexChanged 事件。有没有办法确定哪个 RadioButtonList 刚刚以编程方式单击了其中一个项目？

Answer 1

您可以使用 RadioButtonList 对象的 ID 属性来执行此操作，只要在触发事件时获取 sender 对象的 ID。

protected void RadioButtonList_SelectedIndexChanged(object sender, EventArgs e)
{
    string listName = ((RadioButtonList)sender).ID
    // listName = RadioButtonList1 or RadioButtonList2 or whatever the ID is set to.

    if (listName == "RadioButtonList1")
    {
        // Rest of your code goes here, now that you know which RadioButtonList the event was fired from
    }
}