ResourceDictionary WPF中样式中的交互触发器

我有一个ComboBox ，我需要在我的应用程序中的几个地方使用，所以我在ResourceDictionary设置了该ComboBox大部分属性，并将其用作我需要它的Style。

ComboBox风格是：

我在我的XAML中使用它是这样的：

我想将交互触发器代码也移动到ResourceDictionary ，所以我不需要在所有的xamls中编写它。 有可能吗？

Answer 1

据我所知， Interaction.Triggers不能分别在Style中和ResourceDictionary中应用。 但您可以这样做，将ComboBox确定为x:Shared="False"的资源，并将其引用为ContentControl如下所示：

当x:Shared="True"默认情况下，一个Style对所有人都是通用的 – 在这种情况下，系统会对重复的Content发誓。 当x:Shared="False"为何时创建每个元素的样式。 从MSDN引用：

设置为false时 ，修改WPF资源检索行为，以便对属性资源的请求为每个请求创建new instance ，而不是为所有请求共享同一实例。

有关更多信息，请参阅：

MSDN: x:Shared Attribute

Edit: alternative solution

Here ，Mr.Vspivak发布了一个解决方案，允许您轻松设置Style中的Interaction.Triggers 。

例：

MainWindow.xaml

InteractivityHelper.cs

 /// 
 ///  for InteractivityElements instance /// Subclassed for forward compatibility, perhaps one day   /// will not be partially internal /// 
 public class InteractivityTemplate : DataTemplate { } /// 
 /// Holder for interactivity entries /// 
 public class InteractivityItems : FrameworkElement { private List _behaviors; private List _triggers; /// 
 /// Storage for triggers /// 
 public List Triggers { get { if (_triggers == null) _triggers = new List(); return _triggers; } } /// 
 /// Storage for Behaviors /// 
 public List Behaviors { get { if (_behaviors == null) _behaviors = new List(); return _behaviors; } } #region Template attached property public static InteractivityTemplate GetTemplate(DependencyObject obj) { return (InteractivityTemplate)obj.GetValue(TemplateProperty); } public static void SetTemplate(DependencyObject obj, InteractivityTemplate value) { obj.SetValue(TemplateProperty, value); } public static readonly DependencyProperty TemplateProperty = DependencyProperty.RegisterAttached("Template", typeof(InteractivityTemplate), typeof(InteractivityItems), new PropertyMetadata(default(InteractivityTemplate), OnTemplateChanged)); private static void OnTemplateChanged( DependencyObject d, DependencyPropertyChangedEventArgs e) { InteractivityTemplate dt = (InteractivityTemplate)e.NewValue; #if(!SILVERLIGHT) dt.Seal(); #endif InteractivityItems ih = (InteractivityItems)dt.LoadContent(); BehaviorCollection bc = Interaction.GetBehaviors(d); TriggerCollection tc = Interaction.GetTriggers(d); foreach (Behavior behavior in ih.Behaviors) bc.Add(behavior); foreach (TriggerBase trigger in ih.Triggers) tc.Add(trigger); } #endregion } 

FlipOnHover.cs

 public class FlipOnHover : Behavior { protected override void OnAttached() { AssociatedObject.MouseEnter += AssociatedObject_MouseEnter; AssociatedObject.MouseLeave += AssociatedObject_MouseLeave; Transform t = AssociatedObject.RenderTransform; AssociatedObject.RenderTransform = new TransformGroup(); ((TransformGroup)AssociatedObject.RenderTransform).Children.Add(t); ((TransformGroup)AssociatedObject.RenderTransform).Children.Add(new ScaleTransform()); base.OnAttached(); } void AssociatedObject_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e) { ((ScaleTransform)((TransformGroup)AssociatedObject.RenderTransform).Children[1]).ScaleY = 1; } void AssociatedObject_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e) { ((ScaleTransform)((TransformGroup)AssociatedObject.RenderTransform).Children[1]).CenterX = AssociatedObject.ActualWidth / 2; ((ScaleTransform)((TransformGroup)AssociatedObject.RenderTransform).Children[1]).CenterY = AssociatedObject.ActualHeight / 2; ((ScaleTransform)((TransformGroup)AssociatedObject.RenderTransform).Children[1]).ScaleY=-1; } protected override void OnDetaching() { base.OnDetaching(); AssociatedObject.MouseEnter -= AssociatedObject_MouseEnter; AssociatedObject.MouseLeave -= AssociatedObject_MouseLeave; } } 

ViewModel.cs

 public class ViewModel { private ObservableCollection _dataSource = new ObservableCollection(); public ViewModel() { _dataSource.Add("Cat"); _dataSource.Add("Dog"); _dataSource.Add("Mouse"); _dataSource.Add("Owl"); _dataSource.Add("Rabbit"); } public IEnumerable DataSource { get { return _dataSource; } } } 

有关详细信息，请参阅此链接：

Using Interactivity Behaviors and Actions in WPF/Silverlight Styles

Answer 2

我通常使用Silverlight，因此我不确定以下方法在WPF中是否合理：您可以将xaml拉入UserControl ，例如BranchSelection.xaml ：

并像这样使用它：