MultiSelectionComboBox - How to get SelectedItems about timswpfcontrols HOT 7 CLOSED

Oh indeed. But in my use case I don't select items from code.

from timswpfcontrols.

Hi @GWawrzeniecki

Seems like this is a bug comming from WPF itself. I tried several ways on my own but didn't find a solution so far 😢

• use DataTemplate ► Same issue you have
• use ItemContainerStyle ► works in 70 % of the cases, but not always. Does not work if the Popup was not shown first. Nothing to do here
• searching the web gave me: https://stackoverflow.com/questions/12466967/listbox-isselected-databinding-in-datatemplate

My conclusion is that we need to manually add / remove this in MultiSelectionComboBox.SelectedItems until I found a solution.

Note: I am transferring this control to MahApps. Maybe someone there will have a solution.

Happy coding
Tim

from timswpfcontrols.

Hi @timunie
At first, Thank you very much for your time!
I manged to resolve it with following code!

        '<controls:MultiSelectionComboBox.Resources>
            <Style TargetType="ListBoxItem">
                <Setter Property="IsSelected"
                Value="{Binding IsChecked, Mode=TwoWay}" />
            </Style>
        </controls:MultiSelectionComboBox.Resources>'

from timswpfcontrols.

@GWawrzeniecki Be aware that this does not work in every case! Try to select an item in your model on start up- You may notice that it does not work.

from timswpfcontrols.

That is what I would like to do, so in my case I need to handle it differently. At least I have to state this in the docs for the new implementation on MahApps.

from timswpfcontrols.

Here you are a few another solutions https://stackoverflow.com/questions/9880589/bind-to-selecteditems-from-datagrid-or-listbox-in-mvvm
Maybe one of them will suit your needs

from timswpfcontrols.