ComboBox SelectedItem throws exception in Windows 10 - xaml

Question

following code works fine under Windows 8.1
and I recently upgraded my OS to Windows 10 and it throws an exception.
Here is a screenshot of the exception
This is the XAML code:
<ComboBox Grid.Row="3" HorizontalContentAlignment="Left" HorizontalAlignment="Left"
TabIndex="2" VerticalAlignment="Center"
ItemsSource="{Binding DateFormats}"
SelectedItem="{Binding DateFormatSelected, Mode=TwoWay}">
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Value}" />
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
When I removed the part "SelectedItem" it works but I need the SelectedItem
to be displayed.
Please help.
Here the event viewer application error details. It doesn't provide much info either
Faulting application name: BoardPACWinApp.exe, version: 0.0.0.1, time stamp: 0x55bdb705
Faulting module name: Windows.UI.Xaml.dll, version: 10.0.10240.16397, time stamp: 0x55af0da4
Exception code: 0xc000027b
Fault offset: 0x00722f90
Faulting process id: 0x1e48
Faulting application start time: 0x01d0cd2970f53bb1
Faulting application path: D:\Projects\BoardPACWinApp\BoardPACWinApp\bin\x86\Debug\AppX\BoardPACWinApp.exe
Faulting module path: C:\Windows\System32\Windows.UI.Xaml.dll
Report Id: 38e21b5c-cf75-4849-81df-01bb412c291a
Faulting package full name: IronOneTechnologiesPvtLtd.BoardPACWinDemo_3.14.35.2_x86__na7z394ep8t7e
Faulting package-relative application ID: App

Answer 1

I was getting a similar exception and it was caused because I was manipulating the ItemsSource binding property (List<>) when the binding process started. Now I make all the manipulations on a temp collection which I assign to the binded property when all manipulations to the collection are finished.
Hope this helps...

Answer 2

What I've done is do the SelectedItem binding using the code view.
Here's my XAML code:
<ComboBox x:Name="DateFormatsComboBox" Grid.Row="3" Style="{StaticResource CustomBlueComboBoxStyle}"
ItemsSource="{Binding DateFormats}" ItemContainerStyle="{StaticResource CustomBlueComboBoxItemStyle}">
<!--NOTE: Removed coz Windows 10 had issues | 2015-08-16 | SurenM -->
<!--SelectedItem="{Binding DateFormatSelected, Mode=TwoWay}"-->
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Value}" />
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
Here's my C# code:
//NOTE: Windows 10 had issues with XAML Combobox SelectItem, so it was brought to code behind
DateFormatsComboBox.SelectedItem = _model.DateFormatSelected;
NOTE: _model.DateFormatSelected is a CustomKeyValuePair<string, string>
This approach is tested on Windows 8.1 and Windows 10 both and it works great.