Hello guys,
I try to use "ISelectionService Interface", somethig like this:
define variable rSel as ISelectionService no-undo.
...
if valid-object (rSel) then
rSel:SelectionChanged:Subscribe (OnSelectionChanged).
...
method void OnSelectionChanged ...
in VisualStudio I can see that the interface ISelectionService has 'SelectionChanged' event, the same is in MSDN, and I don't get compiler error. But at run-time I get an error, "can't find SelectionChanged in ISelectionService", why do I get this error?
MSDN C#:
private ISelectionService selectionService;
if (selectionService != null) {
selectionService.SelectionChanged += new EventHandler(OnSelectionChanged);
...
Progress 10.2B
Can you paste the definition of OnSelectionChanged? This works fine on my end.
define variable rSel as ISelectionService no-undo.
rSel = CAST (THIS-OBJECT:ServiceContainer:GetService( Progress.Util.TypeHelper:GetType ("System.ComponentModel.Design.ISelectionService") ), ISelectionService).
if valid-object (rSel) then
rSel:SelectionChanged:Subscribe( OnSelectionChanged ).METHOD VOID OnSelectionChanged ( rObj AS System.Object, rArgs AS System.EventArgs ):
MESSAGE "SelectionChanged! :)" VIEW-AS ALERT-BOX.
END METHOD.
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Error (Press HELP to view stack trace)
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System.MissingMemberException: Member 'System.ComponentModel.Design.SelectionService.SelectionChanged' not found.
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OK Help
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I'm using the same code as what you've got. I'm not seeing anything unusual. What Progress version you are on?
10.2B
Hello Aliaksandr,
I can get the same exception that you get, though I don't know how my test code compares with what you are doing. As a test, I created a UserControl, overrode its InitLayout() method, and put some code like yours into that method. I dropped the UserControl onto a Form in the Visual Designer and, when InitLayout() executes, I get the exception.
Are you trying to use ISelectionService at design time, like I did? (I know you mentioned "run time", but am not sure whether that just means "when the code executes", which in this case could be while designing a form.)
At any rate, I don't know why this exception is being raised, so please submit a bug to Tech Support.
Regards,
--Wayne Henshaw
Done - bug# OE00196061.