<UserControl x:Class="MapModes.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:m="clr-namespace:Microsoft.Maps.MapControl;assembly=Microsoft.Maps.MapControl"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <UserControl.Resources>
        <m:ApplicationIdCredentialsProvider x:Key="BingStorageCred" ApplicationId="your key" />
    </UserControl.Resources>

    <Grid x:Name="LayoutRoot" Background="White">
        <m:Map x:Name="MapCustomMode" CredentialsProvider="{StaticResource BingStorageCred}" >
        </m:Map>
    </Grid>
</UserControl>
