Find all controls in WPF Window by type

Question

I\'m looking for a way to find all controls on Window by their type,

for example: find all TextBoxes, find all controls implementing specific i

Answer 1

I adapted @Bryce Kahle's answer to follow @Mathias Lykkegaard Lorenzen's suggestion and use LogicalTreeHelper.

Seems to work okay. ;)

public static IEnumerable FindLogicalChildren ( DependencyObject depObj ) where T : DependencyObject
{
    if( depObj != null )
    {
        foreach( object rawChild in LogicalTreeHelper.GetChildren( depObj ) )
        {
            if( rawChild is DependencyObject )
            {
                DependencyObject child = (DependencyObject)rawChild;
                if( child is T )
                {
                    yield return (T)child;
                }

                foreach( T childOfChild in FindLogicalChildren( child ) ) 
                {
                    yield return childOfChild;
                }
            }
        }
    }
}

(It still won't check tab controls or Grids inside GroupBoxes as mentioned by @Benjamin Berry & @David R respectively.) (Also followed @noonand's suggestion & removed the redundant child != null)