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Find a logical child, including hidden and collapsed nodes

I tried to find the answer to this problem, and in every post I found that there is an answer to the search recursively, but none of them work with hidden or collapsed children.

Also, in each post, someone asked if this was possible, but no one answered, so I'm starting to think that this is impossible.

If anyone has a way to do this, I will be forever grateful.

My function looks like this:

        public static DependencyObject FindLogicalDescendentByName(this DependencyObject source, string name)
    {
        DependencyObject result = null;
        IEnumerable children = LogicalTreeHelper.GetChildren(source);

        foreach (var child in children)
        {
            if (child is DependencyObject)
            {
                if (child is FrameworkElement)
                {
                    if ((child as FrameworkElement).Name.Equals(name))
                        result = (DependencyObject)child;
                    else
                        result = (child as DependencyObject).FindLogicalDescendentByName(name);
                }
                else
                {
                    result = (child as DependencyObject).FindLogicalDescendentByName(name);
                }
                if (result != null)
                    return result;
            }
        }
        return result;
    }

-EDITED So, I understand that the problem is that I tried to find the item before it was created,

I was attached to a property in xaml that would go away and find the element by the given name, but the element was not created at this point in time, if I re-order the element in xaml, it works and the element is found ... doh!

+3
source
1

, , X: Name

:

System.Windows.Controls.Image myImage = FindChild<System.Windows.Controls.Image>(this (or parent), "ImageName");



/// <summary>
/// Find specific child (name and type) from parent
/// </summary>
public static T FindChild<T>(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<T>(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 name is set for search
         if (frameworkElement != null && frameworkElement.Name == childName)
         {
            // if the child name is of the request name
            foundChild = (T)child;
            break;
         }
      }
      else
      {
         // child element found.
         foundChild = (T)child;
         break;
      }
   }

     return foundChild;
  }
+2

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