[Mono-bugs] [Bug 426167] New: CheckedListBox: change of NewValue property in ItemCheck event is ignored

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=426167


           Summary: CheckedListBox: change of NewValue property in ItemCheck
                    event is ignored
           Product: Mono: Class Libraries
           Version: 2.0
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: andyhume32 at yahoo.co.uk
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


The NewValue property of the ItemChangeEventArgs type is mutable.  If the event
handler method changes the value then that value should be used as the
resultant item state.  Mono ignores any change.

Repro app attached.  Unit-test cases in the patch in bug 426166.

Repro app can test both the Add action and setting state on an existing item.
• 'Add' cases
Initial value=Checked, event action: Leave/Checked/Unset.
Expect: Checked/Checked/Unchecked
Mono produces: Checked/Checked/Checked
Note when Add state is 'unchecked' then there's no ItemCheck event.
• Click/set-state cases
Click on item to toggles, event action: Leave/Check/Uncheck.
Expect, respectively: Item toggles on clicking; Item never becomes unchecked on
clicking; Item never becomes checked on clicking.


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