07. WPF DataGrid Click 위치로 정보 가져오기

using System.Windows;

 

public T GetParentOfType<T>(DependencyObject element) where T : DependencyObject
{
	Type type = typeof(T);

	if (element == null)
	return null;

	DependencyObject parent = VisualTreeHelper.GetParent(element);

	if (parent == null && ((FrameworkElement)element).Parent is DependencyObject)
	parent = ((FrameworkElement)element).Parent;

	if (parent == null)
		return null;
	else if (parent.GetType() == type || parent.GetType().IsSubclassOf(type))
		return parent as T;

	return GetParentOfType<T>(parent);
}

 

사용법

System.Windows.Point point = new System.Windows.Point(Mouse.GetPosition(datagGrid).X, Mouse.GetPosition(datagGrid).Y);

 HitTestResult hitTestResult = VisualTreeHelper.HitTest(datagGrid, point);
 if (hitTestResult != null)
 {
 	//LazySingleton은 싱글턴이라 static으로 함수를 만들던가 해야함.
 	 DataGridCell cell = LazySingleton<SchoolDataUtil>.Instance.GetParentOfType<DataGridCell>(hitTestResult.VisualHit);
     DataGridRow row = LazySingleton<SchoolDataUtil>.Instance.GetParentOfType<DataGridRow>(hitTestResult.VisualHit);
 
 	
 }
 
 public static T GetParentOfType<T>(DependencyObject element) where T : DependencyObject
 {
 	Type type = typeof(T);

	if (element == null)
	return null;

	DependencyObject parent = VisualTreeHelper.GetParent(element);

	if (parent == null && ((FrameworkElement)element).Parent is DependencyObject)
		parent = ((FrameworkElement)element).Parent;

	if (parent == null)
		return null;
	else if (parent.GetType() == type || parent.GetType().IsSubclassOf(type))
		return parent as T;

	return GetParentOfType<T>(parent);
}

 

public class LazySingleton<T> where T : new()
{
	private static readonly Lazy<T> instance = new Lazy<T>(() => new T(), System.Threading.LazyThreadSafetyMode.PublicationOnly);

	public static T Instance { get { return instance.Value; } }

	private LazySingleton() { }
}