G
Guest
Hi all,
..NET Framework 1.1 / Windows Forms - VB.NET
I have a wizard form and a user control with 2 listboxes on it (plus other
user controls for multiple dates and string values).
At runtime I create a new panel, then I instantiate the user control, pass
in an arraylist as the data source for the left-hand listbox, add the
usercontrol to the controls collection of the panel, and add the panel to the
form.
It all works fine, the arraylist is displayed in the left listbox, events
raised when the user clicks the button to add an item from the list on the
left to the list on the right... plus the panel hides itself ok to show
another panel with a different control when the user clicks Next.
The problem comes when I want to show again the Panel with the listbox
usercontrol on it after the user clicks 'Previous'.
An exception is thrown (cannot change the Items collection when the
DatSource property is set).
thing is, in the Previous method, there is nothing that would try to affect
the Items collection, so where is the error coming from?
thanks for any help
Philip
..NET Framework 1.1 / Windows Forms - VB.NET
I have a wizard form and a user control with 2 listboxes on it (plus other
user controls for multiple dates and string values).
At runtime I create a new panel, then I instantiate the user control, pass
in an arraylist as the data source for the left-hand listbox, add the
usercontrol to the controls collection of the panel, and add the panel to the
form.
It all works fine, the arraylist is displayed in the left listbox, events
raised when the user clicks the button to add an item from the list on the
left to the list on the right... plus the panel hides itself ok to show
another panel with a different control when the user clicks Next.
The problem comes when I want to show again the Panel with the listbox
usercontrol on it after the user clicks 'Previous'.
An exception is thrown (cannot change the Items collection when the
DatSource property is set).
thing is, in the Previous method, there is nothing that would try to affect
the Items collection, so where is the error coming from?
thanks for any help
Philip