Combobox items will be drawn above each other on scroll down

[Hypnos3]

Environment

• Fluent.Ribbon v4.0.3.394
• Theme Office2013
• Windows 7
• .NET Framework 4.0

Combobox shows items wrong.

on Scrolling a large list, the items would be drawn above each other:

When scrolbar is at the top, all is fine:

This problem occures in the version from GitHb from Today (2016-04-18) or from actual version on NuGet.

[batzen]

Will have a look.

[batzen]

I can't reproduce your exact problem. On my machine the scrolling is totally broken.
I guess the problems are related to each other.
Could you try to reproduce your issue with the latest sources from the develop branch?

[Hypnos3]

Thank you for your testing.

I will try to reproduce this tomorrow.
Am 19.04.2016 18:51 schrieb "Bastian Schmidt" [email protected]:

I can't reproduce your exact problem. On my machine the scrolling is
totally broken.
I guess the problems are related to each other.
Could you try to reproduce your issue with the latest sources from the
develop branch?

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#305 (comment)

[Hypnos3]

With the code from latest develop branch the problem is solved.

An unattractiveness is now, if an element is selected and the combobox is opened, the scrollbar is always at the end. As far as I can remember the normal combobox behaviour is that the selected element is in the view.

[batzen]

Ok, my fix fixes the weird drawing but also destroys virtualization.

Will have to find different solution.

[batzen]

I pushed the changes for #309, please check how it works for you.

[Hypnos3]

Yes, this is working if I use your suggestion:

On the ComboBox:

ScrollViewer.CanContentScroll="False"

itemspanel:

<Fluent:ComboBox.ItemsPanel>
    <ItemsPanelTemplate>
        <Fluent:GalleryPanel GroupBy="Tag"
                                ItemContainerGenerator="{Binding ItemContainerGenerator, RelativeSource={RelativeSource FindAncestor, AncestorType=ComboBox}}" />
    </ItemsPanelTemplate>
</Fluent:ComboBox.ItemsPanel>

[batzen]

Glad to hear that it works for you.