Wpf methods for finding parent and child elements and wpf methods for searching Elements

Wpf methods for finding parent and child elements and wpf methods for searching Elements

1 /// <summary> 2 /// search for child elements by type 3 /// </summary> 4 /// <typeparam name = "T"> </typeparam> 5 /// <param name = "obj"> </param> 6 /// <param name = "typename"> </param> 7 /// <returns> </returns> 8 public List <T> GetChildObjects <T> (DependencyObject obj, type typename) where T: FrameworkElement 9 {10 DependencyObject child = null; 11 List <T> childList = new List <T> (); 12 13 for (int I = 0; I <= VisualTreeHelper. getChildrenCount (obj)-1; I ++) 14 {15 child = VisualTreeHelper. getChild (obj, I); 16 17 if (child is T & (T) child ). getType () = typename) 18 {19 childList. add (T) child); 20} 21 childList. addRange (GetChildObjects <T> (child, typename); 22} 23 return childList; 24}

Call 1 List <StackPanel> initToolBarWeChatUserSp = GetChildObjects <StackPanel> (name, typeof (StackPanel ));

 

1 /// <summary> 2 /// search for parent element 3 /// </summary> 4 /// <typeparam name = "T"> </typeparam> 5/ // <param name = "obj"> </param> 6 // <param name = "name"> </param> 7 // <returns> </returns> 8 public static T FindParent <T> (DependencyObject I _dp) where T: DependencyObject 9 {10 DependencyObject dobj = (DependencyObject) VisualTreeHelper. getParent (I _dp); 11 if (dobj! = Null) 12 {13 if (dobj is T) 14 {15 return (T) dobj; 16} 17 else18 {19 dobj = FindParent <T> (dobj ); 20 if (dobj! = Null & dobj is T) 21 {22 return (T) dobj; 23} 24} 25} 26 return null; 27}

Call 1 Border tbBorder = FindParent <Border> (name );