I have a module containing a global function, and I want it to have access to the calling page's controls.
myControl shows as 'Not Declared'. I understand this, but how do I reference it properly?

Thanks in advance,
Colonel

- - - - - - - - - - - - - - - - - - - - - - -
In God we trust, everything else we test.

What is parameters in this case? A control, or the entire page?
Do you want the Sub routine to change a (random) control in the page, or a specific control?

In the first scenario, pass the control in the page:

MySub (Button1)

Then have the MySub sub accept a Control as a parameter.

Otherwise, pass the entire form:

MySub (Me)

and have the MySub accept a Page object. You can use the Controls collection of the Page instance to find your control.

If you elaborate a bit about what you're trying to accomplish, I may be able to come up with a better or more detailed solution.

Cheers,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Wandering Star by Portishead (Track 5 from the album: Dummy) What's This?

The parameter in this case is a string. It's used in a db lookup; if the lookup returns zero rows, then I want myControl (a label) to be visible.

I guess I could pass the page, but it seems like overkill for just switching Visible on a label?

- - - - - - - - - - - - - - - - - - - - - - -
In God we trust, everything else we test.

Since you're passing a reference, not a copy of the page, there is not that much overhead. But if you know it's going to be a label, pass a label:

(ASPX Page)
Dim MyLabel1 As Label
DetermineVisibility(MyLabel1, true)

(Sub Routine)
Public Sub DetermineVisibility(ByRef TheLabel As Label, condition As Boolean)
  If condition Then
    TheLabel .Visible = True
  Else
    TheLabel .Visible = False
  End If
End Sub

This way, you have strongly typed reference to a Label instance, so you could set other Label specific properties / methods as well.
If you want a generic method that can handle Textboxes, buttons and so on as well, change the type of the TheLabel variable to Control.

HtH,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Missed by P.J. Harvey (Track 2 from the album: Rid Of Me) What's This?

Or why not simplify this whole situation and do this...

(ASPX Page)
Dim MyLabel1 As Label
MyLabel1.Visible = DetermineCondition(<parameters>)

(Sub Routine)
Public Function DetermineCondition(<parameters>) As Boolean
If <condition> Then
    Return True
Else
    Return False
End If
End Function

This would help separate your business logic (determining some condition) from your UI logic (setting visibility) while also removing the requirement of passing UI control(s) to the helper method.

Actually, Peter I like that solution better for the "cleanliness" of not having to pass an object, and better separation of logic and UI.

Thanks guys!

- - - - - - - - - - - - - - - - - - - - - - -
In God we trust, everything else we test.