Dynamically handling events

  • Thread starter Thread starter Jeff Molby
  • Start date Start date
J

Jeff Molby

I'm trying to implement the following code.
I want the base class to compile a collection of ComboBox controls and
handle their SelectedIndexChanged() event. I can't figure out how though.

I get a compile error on line 10.

"'cbx' is not an event of 'BaseClass'"

The first paramenter of the AddHandler statement is supposed to an Event,
but I don't know how to get a reference to the SelectedIndexChanged event of
cbx.


Public Class BaseClass
Dim colLookups As Collection

Protected Sub AddLookup(ByRef cbx As System.Windows.Forms.ComboBox)
10 AddHandler cbx, AddressOf cbxLookup_SelectedIndexChanged
colLookups.Add(cbx)
End Sub

Protected Overridable Sub cbxLookup_SelectedIndexChanged(ByVal sender As
System.Object, ByVal e As System.EventArgs)

End Sub
End Class

Public Class ChildClass
Inherits BaseClass

Public Sub CreateLookupControls()
'Creates any number of ComboBoxes (or none), changes various
settings, and sends each combo to MyBase.AddLookup()
End Sub
End Class


Any ideas??

Thanks!
 
Hello,

Jeff Molby said:
I want the base class to compile a collection of ComboBox
controls and handle their SelectedIndexChanged() event. I can't
figure out how though.

I get a compile error on line 10.

"'cbx' is not an event of 'BaseClass'" [...]
AddHandler cbx, AddressOf cbxLookup_SelectedIndexChanged
Click to expand...

\\\
AddHandler _
cbx.SelectedIndexChanged, _
AddressOf cbxLookup_SelectedIndexChanged
///
 
Herfried, you embarrass me.... How did I not figure that out?? Thanks for
your help!


Herfried K. Wagner said:
Hello,

Jeff Molby said:
I want the base class to compile a collection of ComboBox
controls and handle their SelectedIndexChanged() event. I can't
figure out how though.

I get a compile error on line 10.

"'cbx' is not an event of 'BaseClass'" [...]
AddHandler cbx, AddressOf cbxLookup_SelectedIndexChanged
Click to expand...

\\\
AddHandler _
cbx.SelectedIndexChanged, _
AddressOf cbxLookup_SelectedIndexChanged
///
colLookups.Add(cbx)
Click to expand...
Click to expand...
 
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