我已经将 a 设置ItemsSource为ListBox一个ObservableCollection<Employee>集合,并且我的Employee类实现了INotifyPropertyChanged.
在 上Employee,我绑定了几个属性,其中一个是一个Color属性,并且我确保它在PropertyChanged事件发生更改时调用它。我还检查了PropertyChanged调用调用的调试器。
但是,当数据绑定时,绑定中的永远Background不会更新,这非常令人沮丧。ListBoxItemListBox
将其设置ItemsSource为 null,并在工作后将其重置,但这不是我们使用观察者模式的方式。
使用的 XAML:
<Style TargetType="{x:Type ListBoxItem}">
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}"
Color="{x:Static SystemColors.HighlightColor}" />
</Style.Resources>
<Setter Property="Foreground" Value="White" />
<Setter Property="Background"
Value="{Binding Path=Color, Converter={StaticResource ColorConverter}}" />
<Setter Property="Content" Value="{Binding Path=Name}" />
<Setter Property="Height" Value="25" />
<Setter Property="Margin" Value="0,1,0,1" />
<EventSetter Event="MouseDoubleClick" Handler="HelperList_MouseDoubleClick" />
</Style>
<ListBox x:Name="helperList" Grid.Column="0" Grid.Row="1"
Margin="5,2,0,5" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"
ScrollViewer.VerticalScrollBarVisibility="Visible"
SelectionChanged="HelperList_SelectionChanged">
</ListBox>
响应第一个回复的更多代码:
public class Employee : Person
{
private EmployeeColor color = new EmployeeColor();
public EmployeeColor Color
{
get { return this.color; }
set
{
if(!this.color.Equals(value))
OnPropertyChanged("Color");
this.color = value;
}
}
}
var employees = new ObservableCollection<Employee>();
//... fill out data here
helperList.ItemsSource = employees;