新建一个web窗体的问题

Question

新建一个web窗体，default.aspx页面不做定义
在default.cs文件中创建
DropDownList oSelectAppearance = new DropDownList();
DropDownList oSelectSpeed = new DropDownList();
下拉框，设置自动回发
oSelectAppearance.AutoPostBack = true;
oSelectSpeed.AutoPostBack = true;这时候要在后台设置他们的OnSelectedIndexChanged事件应该怎样设置呢~？
在msdn帮助写的该OnSelectedIndexChanged事件是protected的阿~求教各位大大了

Answer 1

DropDownList oSelectAppearance = new DropDownList();
DropDownList oSelectSpeed = new DropDownList();oSelectAppearance.SelectedIndexChanged += new EventHandler(oSelectAppearance_SelectedIndexChanged);
    void oSelectAppearance_SelectedIndexChanged(object sender, EventArgs e)
    {
        throw new Exception("The method or operation is not implemented.");
    }

Answer 2

protected void Page_Load(object sender, EventArgs e)
        {
            DropDownList1.SelectedIndexChanged += new EventHandler(DropDownList1_SelectedIndexChanged);
        }        void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }

Answer 3

在msdn帮助写的该OnSelectedIndexChanged事件是protected的阿~
--------------------------------------
最好写成private的
    void oSelectAppearance_SelectedIndexChanged(object sender, EventArgs e)
    {
        throw new Exception("The method or operation is not implemented.");
    }

Answer 4

oSelectAppearance.SelectedIndexChanged += new EventHandler(oSelectAppearance_SelectedIndexChanged); void oSelectAppearance_SelectedIndexChanged(object sender, EventArgs e)
{
    throw new Exception("The method or operation is not implemented.");
}这样子是添加了一个委托么~？

Answer 5

这样子是添加了一个委托么~？
--------------------------
Yes