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copied!<p>The simplest way is to subclass Slider:</p> <pre><code>public class CustomSlider : Slider { public override void OnPreviewMouseMove(MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed) OnPreviewMouseLeftButtonDown(e); } } </code></pre> <p>In which case your XAML would be:</p> <pre><code><my:CustomSlider IsMoveToPointEnabled="True" /> </code></pre> <p>For a more versatile solution that doesn't subclass Slider you can do it with an attached property:</p> <pre><code>public class SliderTools : DependencyObject { public static bool GetMoveToPointOnDrag(DependencyObject obj) { return (bool)obj.GetValue(MoveToPointOnDragProperty); } public static void SetMoveToPointOnDrag(DependencyObject obj, bool value) { obj.SetValue(MoveToPointOnDragProperty, value); } public static readonly DependencyProperty MoveToPointOnDragProperty = DependencyProperty.RegisterAttached("MoveToPointOnDrag", typeof(bool), typeof(SliderTools), new PropertyMetadata { PropertyChangedCallback = (obj, changeEvent) => { var slider = (Slider)obj; if((bool)changeEvent.NewValue) slider.MouseMove += (obj2, mouseEvent) => { if(mouseEvent.LeftButton == MouseButtonState.Pressed) slider.RaiseEvent(new MouseButtonEventArgs(mouseEvent.MouseDevice, mouseEvent.Timestamp, MouseButton.Left) { RoutedEvent = UIElement.PreviewMouseLeftButtonDownEvent, Source = mouseEvent.Source, }); }; } }); } </code></pre> <p>You would use this attached property on Slider along with the IsMoveToPointEnabled property:</p> <pre><code><Slider IsMoveToPointEnabled="True" my:SliderTools.MoveToPointOnDrag="True" ... /> </code></pre> <p>Both of these solutions work by converting PreviewMouseMove events into equivalent PreviewMouseLeftButtonDown events whenever the left button is down.</p> <p>Note that the attached property does not remove the event handler when the property is set to false. I wrote it this way for simplicity since you almost never would need to remove such a handler. I recommend you stick with this simple solution, but if you want you can modify the PropertyChangedCallback to remove the handler when NewValue is false.</p>

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