Question

I am trying to bind to a static property on a static class,
this property contains settings that are deserialized from a file.

It never works with the following XAML :

    <Window.Resources>
    <ObjectDataProvider x:Key="wrapper" ObjectType="{x:Type Application:Wrapper}"/>
</Window.Resources>

<ScrollViewer x:Name="scrollViewer" ScrollViewer.VerticalScrollBarVisibility="Auto"DataContext="{Binding Source={StaticResource wrapper}, UpdateSourceTrigger=PropertyChanged}">

   <ComboBox x:Name="comboboxThemes"
                  SelectedIndex="0"
                  SelectionChanged="ComboBoxThemesSelectionChanged"
                  Grid.Column="1"
                  Grid.Row="8"
                  Margin="4,3" ItemsSource="{Binding Settings.Themes, Mode=OneWay}" SelectedValue="{Binding Settings.LastTheme, Mode=TwoWay}"   />

It does work by code however :

comboboxThemes.ItemsSource = Settings.Themes;

Any idea ?

Thank you 🙂

Answer 1

I have found the answers !

It did silently throw an Exception has been thrown by the target of an invocation i didn’t know more …

I was initializing a log that writes to a file; the designer finally showed up the details of the exception, it was looking for creating the file in Visual Studio directory which is in Program Files, hence a security exception was thrown.

Apparently VS copies the file to its folder, for its Designer.

I fixed it like this :

 var isInDesignMode = DesignerProperties.GetIsInDesignMode(SettingsWindow);
        if (!isInDesignMode)
        {
            Log = new WrapperLogManager("log_wrapper.txt");
        }

Last but not least, using ObjectDataProvider never worked as well, only through x:Static

This was driving me totally crazy for a few days as it’s not so hard to bind data; I just learned another lesson !