我正在使用WPF扩展工具包来显示Team对象的属性.现在其中一个属性是人物集合.没问题,我得到一个很好的下拉,当我点击时,向我显示每个人的姓名和年龄.
现在的问题是我实际上并不希望将我的Collection公开为public.但是,只要我将其setter设为私有,就会禁用该属性,以防止用户看到Person集合和人员详细信息:
当它的setter是私有的时候我该如何显示我的Person Collection?我可以使用XAML模板执行此操作吗?如果是这样的话?我正在使用MVVM,因此我不想在代码中添加任何内容.
更新
好的,所以@tencntraze的解决方案让我大部分都在那里 - 谢谢.但是它对于对象的集合不起作用,这是我在我的情况下得到的.此外,它还可以简化为使用CollectionControlDialog而不是下面实现的自定义ReadOnlyCollectionViewer.
XAML
代码隐藏
public partial class ReadOnlyCollectionEditor : UserControl, ITypeEditor { public ReadOnlyCollectionEditor() { InitializeComponent(); } // Use typeof(object) to allow for any Collectionpublic static readonly DependencyProperty ValueProperty = DependencyProperty.Register( "Value", typeof(object), typeof(ReadOnlyCollectionEditor), new PropertyMetadata(default(object))); public object Value { // We are now using object so no need to cast get { return GetValue(ValueProperty); } set { SetValue(ValueProperty, value); } } public FrameworkElement ResolveEditor(Xceed.Wpf.Toolkit.PropertyGrid.PropertyItem propertyItem) { var binding = new Binding("Value") { Source = propertyItem, Mode = propertyItem.IsReadOnly ? BindingMode.OneWay : BindingMode.TwoWay }; BindingOperations.SetBinding(this, ValueProperty, binding); return this; } private void Button_OnClick(object sender, RoutedEventArgs e) { var collectionControlDialog = new CollectionControlDialog { ItemsSource = (IList)this.Value }; collectionControlDialog.ShowDialog(); } }
Matt.. 10
我认为你最好的选择是根据Xceed文档实现自己的编辑器.然后,您可以向用户提供要显示的任何UI,而无需将值提交回基础对象.请注意,此方法适用于私有setter以及没有任何setter的属性.
ReadOnlyCollectionEditor
XAML
代码隐藏
public partial class ReadOnlyCollectionEditor : UserControl, ITypeEditor { public ReadOnlyCollectionEditor() { InitializeComponent(); } public static readonly DependencyProperty ValueProperty = DependencyProperty.Register( "Value", typeof (IList), typeof (ReadOnlyCollectionEditor), new PropertyMetadata(default(IList ))); public IList Value { get { return (IList )GetValue(ValueProperty); } set { SetValue(ValueProperty, value); } } public FrameworkElement ResolveEditor(Xceed.Wpf.Toolkit.PropertyGrid.PropertyItem propertyItem) { var binding = new Binding("Value") { Source = propertyItem, Mode = propertyItem.IsReadOnly ? BindingMode.OneWay : BindingMode.TwoWay }; BindingOperations.SetBinding(this, ValueProperty, binding); return this; } private void Button_OnClick(object sender, RoutedEventArgs e) { ReadOnlyCollectionViewer viewer = new ReadOnlyCollectionViewer {DataContext = this}; viewer.ShowDialog(); } }
ReadOnlyCollectionViewer
示例属性类
public class MyDataObjects { public MyDataObjects() { this.CollectionProperty = new Collection{"Item 1", "Item 2", "Item 3"}; this.StringProperty = "Hi!"; } public string StringProperty { get; set; } [Editor(typeof(ReadOnlyCollectionEditor), typeof(ReadOnlyCollectionEditor))] public ICollection CollectionProperty { get; private set; } }
分配到属性网格
this.propertyGrid.SelectedObject = new MyDataObjects();
结果
编辑
我意识到你想使用MVVM,我在使用WPF时非常鼓励,但是为了这个示例的目的,我认为保持简单有助于说明这一点,否则它会带来其他问题,比如从MVVM显示模态对话框,所以我只需点击一下按钮即可显示对话框.
我认为你最好的选择是根据Xceed文档实现自己的编辑器.然后,您可以向用户提供要显示的任何UI,而无需将值提交回基础对象.请注意,此方法适用于私有setter以及没有任何setter的属性.
ReadOnlyCollectionEditor
XAML
<UserControl x:Class="WpfApplication2.ReadOnlyCollectionEditor" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="uc"> <Button Click="Button_OnClick" /> </UserControl>
代码隐藏
public partial class ReadOnlyCollectionEditor : UserControl, ITypeEditor { public ReadOnlyCollectionEditor() { InitializeComponent(); } public static readonly DependencyProperty ValueProperty = DependencyProperty.Register( "Value", typeof (IList<string>), typeof (ReadOnlyCollectionEditor), new PropertyMetadata(default(IList<string>))); public IList<string> Value { get { return (IList<string>)GetValue(ValueProperty); } set { SetValue(ValueProperty, value); } } public FrameworkElement ResolveEditor(Xceed.Wpf.Toolkit.PropertyGrid.PropertyItem propertyItem) { var binding = new Binding("Value") { Source = propertyItem, Mode = propertyItem.IsReadOnly ? BindingMode.OneWay : BindingMode.TwoWay }; BindingOperations.SetBinding(this, ValueProperty, binding); return this; } private void Button_OnClick(object sender, RoutedEventArgs e) { ReadOnlyCollectionViewer viewer = new ReadOnlyCollectionViewer {DataContext = this}; viewer.ShowDialog(); } }
ReadOnlyCollectionViewer
<Window x:Class="WpfApplication2.ReadOnlyCollectionViewer" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="ReadOnlyCollectionViewer" > <ListBox ItemsSource="{Binding Value}" /> </Window>
示例属性类
public class MyDataObjects { public MyDataObjects() { this.CollectionProperty = new Collection<string> {"Item 1", "Item 2", "Item 3"}; this.StringProperty = "Hi!"; } public string StringProperty { get; set; } [Editor(typeof(ReadOnlyCollectionEditor), typeof(ReadOnlyCollectionEditor))] public ICollection<string> CollectionProperty { get; private set; } }
分配到属性网格
this.propertyGrid.SelectedObject = new MyDataObjects();
结果
编辑
我意识到你想使用MVVM,我在使用WPF时非常鼓励,但是为了这个示例的目的,我认为保持简单有助于说明这一点,否则它会带来其他问题,比如从MVVM显示模态对话框,所以我只需点击一下按钮即可显示对话框.