54 lines
1.8 KiB
C#
54 lines
1.8 KiB
C#
using Microsoft.Xaml.Behaviors;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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namespace UIShare.Behaviors
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{
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//给Border添加双击事件
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public class MouseDoubleClickBehavior : Behavior<Border>
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{
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public static readonly DependencyProperty CommandProperty =
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DependencyProperty.Register("Command", typeof(ICommand), typeof(MouseDoubleClickBehavior), new PropertyMetadata(null));
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public ICommand Command
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{
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get => (ICommand)GetValue(CommandProperty);
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set => SetValue(CommandProperty, value);
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}
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public static readonly DependencyProperty CommandParameterProperty =
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DependencyProperty.Register("CommandParameter", typeof(object), typeof(MouseDoubleClickBehavior), new PropertyMetadata(null));
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public object CommandParameter
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{
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get => GetValue(CommandParameterProperty);
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set => SetValue(CommandParameterProperty, value);
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}
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protected override void OnAttached()
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{
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base.OnAttached();
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// 确保 Border 的 Background 不为 null，否则无法触发点击事件
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this.AssociatedObject.MouseLeftButtonDown += OnMouseLeftButtonDown;
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}
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protected override void OnDetaching()
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{
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base.OnDetaching();
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this.AssociatedObject.MouseLeftButtonDown -= OnMouseLeftButtonDown;
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}
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private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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// 判断点击次数是否为 2
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if (e.ClickCount == 2)
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{
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if (Command != null && Command.CanExecute(CommandParameter))
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{
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Command.Execute(CommandParameter);
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}
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}
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}
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}
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} |