Slider Thumb DragCompleted Event WPF

Slider Thumb DragCompleted Event WPF
Occurs when the Thumb control loses mouse capture.

The following example shows how to assign an event handler for the DragCompleted event to a Thumb control, and how to define the event handler.

 #region Constructor
public void Initialize(UIElement element)
{
  var sliderBox = FindChild(Application.Current.MainWindow, "MySlider");
  slider.AddHandler(System.Windows.Controls.Primitives.Thumb.DragCompletedEvent, new System.Windows.Controls.Primitives.DragCompletedEventHandler(SliderPositionOnDragCompleted));
}

 private void SliderPositionOnDragCompleted(object sender, DragCompletedEventArgs e)
        {
            try
            {
                var d = sender as Slider;
                Trace.Debug("SliderPositionOnDragCompleted " + d.Name);
 
            }
            catch (Exception exception)
            {
                Trace.Error(exception);

            }
        }

public static T FindChild(DependencyObject parent, string childName)
   where T : DependencyObject
        {
            // Confirm parent and childName are valid. 
            if (parent == null) return null;

            T foundChild = null;

            int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
            for (int i = 0; i < childrenCount; i++)
            {
                var child = VisualTreeHelper.GetChild(parent, i);
                // If the child is not of the request child type child
                T childType = child as T;
                if (childType == null)
                {
                    // recursively drill down the tree
                    foundChild = FindChild(child, childName);

                    // If the child is found, break so we do not overwrite the found child. 
                    if (foundChild != null) break;
                }
                else if (!string.IsNullOrEmpty(childName))
                {
                    var frameworkElement = child as FrameworkElement;
                    // If the child's name is set for search
                    if (frameworkElement != null && frameworkElement.Name == childName)
                    {
                        // if the child's name is of the request name
                        foundChild = (T)child;
                        break;
                    }
                }
                else
                {
                    // child element found.
                    foundChild = (T)child;
                    break;
                }
            }

            return foundChild;
        }