Calling methods inside a user control from the container control

[Guest]

Hi,

I have an aspx page page with some existing controls code etc. This page has
an update button which updates a SQL Db based on any user changes. I need to
add a new section to this page and a few other pages. I think that it's best
to create a user control for this purpose. This user control will contain a
number of webcontrols e.g textbox, dropdown etc When the user clicks update
on the main page I need to update the DB as before for the original controls
plus the new ones from the user control.

What is the best way to do this? I thought that the user control should have
its own methods to take care of the updates but how should the main page call
these methods or is there a better way to do this?

 

[Karl]

The best way, in my opinion, is to have the page raise an event, which the
user controls are hooked into.

Basically, your page defines an event:
Public Event Save As EventHandler

on the click event of the page, you raise the event:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
RaiseEvent Save(Me, e)
End Sub

in the user control(s) you hook into the event:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
AddHandler CType(Page, TYPEOFPAGEHERE).Save, AddressOf OnSave
'TYPEOFPAGEHERE is going to be like WebForm1 or something
End Sub

and then you have your control's save function:

Private Sub OnSave(ByVal source As Object, ByVal e As EventArgs)
'do your magic here
End Sub

Karl