Dropdown_load事件和Page_load？

Question

1. I have to bind Drop down list when the Page load.In my previous Project I have used Page_Load event.Now i find an event which is Drop down_load event .I used Drop down_load and its Work well .

2. Is there any difference between these two events,In some cases i have to bind more than 10 Drop down list.

3. so which one is best?

   eg:

     protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { //bind my Dropdown } } protected void ddlProduct_Load(object sender, EventArgs e) { if (!IsPostBack) { //bind my Dropdown } } 

Answer 1

It depends on your requirement and when you want to bind your DropDownList s. According to ASP.Net Page Life cycle Page_Load event firs first and then control events, in this case the ddlProduct_Load event.

And, this is also true according the the DropDownList Load event's definition

Fires when the page has been loaded

So, you have to make a decision where you want to bind the control.

Since you have more than 10 DropDownLists I would suggests to use their own load event to bind your control rather than making Page_Load looks too busy.