<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    
    <Label Grid.Row="0" Grid.Column="0" Text="Enter Value:" />
    <Entry Grid.Row="0" Grid.Column="1" x:Name="ValueEntry" />
    
    <Label Grid.Row="1" Grid.Column="0" Text="From:" />
    <Picker Grid.Row="1" Grid.Column="1" x:Name="FromPicker">
        <Picker.Items>
            <x:String>Miles</x:String>
            <x:String>Kilometers</x:String>
        </Picker.Items>
    </Picker>
    
    <Label Grid.Row="2" Grid.Column="0" Text="To:" />
    <Picker Grid.Row="2" Grid.Column="1" x:Name="ToPicker">
        <Picker.Items>
            <x:String>Miles</x:String>
            <x:String>Kilometers</x:String>
        </Picker.Items>
    </Picker>
    
    <Button Grid.Row="3" Grid.Column="1" Text="Convert" Clicked="OnConvertClicked" />
    <Label Grid.Row="4" Grid.Column="1" x:Name="ResultLabel" />
</Grid>