windows-phone-7 - 在 WP7 ListBox 控件中显示应用设置

Question

我有一个绑定到ObservableCollection.

我的 XAML 代码：

<ListBox Margin="12,148,12,90" ItemsSource="{Binding FuelRecords}" Name="ListBox1">
        <ListBox.ItemTemplate>
            <DataTemplate>
               <StackPanel>
                   <TextBlock Text="Fuel quantity: {Binding Quantity}" FontSize="20" />
               </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

我想在数量之后显示一个计量单位（升、加仑）。测量单位保存IsolatedStorageSettings在AppSettings类（VolumeSetting属性）中。

最终结果：燃油量：23.45 加仑

Answer 1

public class Fuel
{
    public double QuantityGallons { get; set; }

    public double Quantity
    {
        get
        {
            return QuantityGallons * (AppSettings["VolumeSetting"] == Units.Pounds) ? 1.5 : 1.0;
        }
    }

    public string Units
    {
        get
        {
            return (AppSettings["VolumeSetting"] == Units.Pounds) ? "pound" : "gallon";
        }
    }
}

xml:

<StackPanel Orientation="Horizontal">
    <TextBlock Text="Fuel quantity: " FontSize="20" />
    <TextBlock Text="{Binding Quantity}" FontSize="20" />
    <TextBlock Text="{Binding Units}" FontSize="20" />
</StackPanel>