c# - xceed wpf 属性网格集合选择

Question

我是 WPF 的新手，这可能是个愚蠢的问题，但是......)一个由 xceed wpf propertygrid 可视化的自定义属性类

public class ShopProperties
{
    private readonly ObservableCollection<string> _cars = new ObservableCollection<string>();

    [Category(@"CarsShop")]
    [DisplayName(@"CarsCollection")]
    public ObservableCollection<string> CarsCollection { get {return _cars;}}

    [Browsable(false)] 
    private string SelectedCar {get; set;}
}

我需要使用什么最简单最好的 PropertyGrid 编辑器(或自定义编辑器)来从 CarsCollection 分配 SelectedCar 元素？

Answer 1

经过一些搜索和阅读http://wpftoolkit.codeplex.com/wikipage?title=PropertyGrid&referringTitle=Documentation我认为在我的情况下至少有两种方式。

1。自定义 xctk:CollectionControl 并编辑 XAML。

<xctk:PropertyGrid Name="_generalPropertyGrid" DockPanel.Dock="Top" 
                            ShowSearchBox="False" ShowSortOptions="False" ShowTitle="False" NameColumnWidth="120" BorderThickness="0">
  <xctk:PropertyGrid.EditorDefinitions>
    <xctk:EditorTemplateDefinition TargetProperties="CarsCollection">
      <xctk:EditorTemplateDefinition.EditingTemplate>
        <DataTemplate>
          <xctk:CollectionControl SelectedItem="{Binding Path=SelectedCar}"/>
        </DataTemplate>
      </xctk:EditorTemplateDefinition.EditingTemplate>
    </xctk:EditorTemplateDefinition>
  </xctk:PropertyGrid.EditorDefinitions>
</xctk:PropertyGrid>

2。创建自己的 UserControl 来实现 ITypeEditor

请参阅 http://wpftoolkit.codeplex.com/wikipage?title=PropertyGrid&referringTitle=Documentation 中的数据通过 ComboBox 选择。我选择这种方式。

<UserControl x:Class="proj_namespace.CarSelector"
 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
 mc:Ignorable="d" 
 x:Name="CarSelector"
 d:DesignHeight="25" d:DesignWidth="200">
  <Grid>
    <ComboBox ItemsSource="{Binding Value, ElementName=CarSelector}" SelectionChanged="Selector_OnSelectionChanged"/>
  </Grid>
</UserControl>

后面还有类代码:

public partial class CarSelector : ITypeEditor
{
    public CarSelector()
    {
        InitializeComponent();
    }

    public static readonly DependencyProperty ValueProperty = 
        DependencyProperty.Register("Value", typeof(ObservableCollection<string>), typeof(CarSelector),
            new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));

    
    public string Value
    {
        get { return (string)GetValue(ValueProperty); }
        set { SetValue(ValueProperty, value); }
    }

    public FrameworkElement ResolveEditor(PropertyItem propertyItem)
    {
        var binding = new Binding("Value");
        binding.Source = propertyItem;
        binding.Mode = propertyItem.IsReadOnly ? BindingMode.OneWay : BindingMode.TwoWay;
        BindingOperations.SetBinding(this, ValueProperty, binding);
        return this;
    }

    private void Selector_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (sender != null)
            MainWindow.Instance._properties.SelectedCar = (sender as ComboBox).SelectedItem as string;
    }
}

最后在属性上方添加自定义编辑器行

[Editor(typeof(CarSelector), typeof(CarSelector))]
public ObservableCollection<string> CarsCollection { get { return _securities; } }