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This post covers storing and retrieving settings with a WPF combobox for the UI. If you are looking for a solution to store settings across devices, for instance a Windows Surface tablet and a Windows Phone powered device, you should check out the blog of Mike Taulty. That is called roaming data storage. And if you are not working on an app for Windows RT/metro or Windows Phone but are just coding some WPF application, you should read this post from Scott Hanselman.

Let’s start with some code now that it’s clear what this post covers and what it doesn’t cover.

Here is my XAML from my userinterface:

<ComboBox x:Name="cbCountry" 
    SelectionChanged="ComboBox_SelectionChanged" 
    PlaceholderText="Select country" SelectedValuePath="Tag">
    <ComboBoxItem Content="Australia" Tag="au"/>
    <ComboBoxItem Content="New Zealand" Tag="nz"/>
</ComboBox>

Please note the ‘SelectedValuePath’ is being set to ‘Tag’, otherwise it would grab the ‘comboboxitem’ or ‘content’ like this:

var comboboxContent = ((ComboBoxItem)cbCountry.SelectedValue).Content;

With the value path set to tag, it will grab ‘au’ or ‘nz’ as selected value.

This is the constructor of the xaml page containing my settings.

var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;

this.InitializeComponent();

if (localSettings.Values.ContainsKey("country"))
{
    cbCountry.SelectedValue = localSettings.Values["country"];
}

and this is the code for the selectionchanged event of the combobox.

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
    localSettings.Values["country"] = cbCountry.SelectedValue;
}

Good luck with this small code sample. If this is not what you are looking for, please check the links mentioned at the start. I strongly believe that they take you to the code that you are looking for (if the code above is insufficient)

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