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

For this and more use cases you can add flowing extension method to your library:

 public static List FindAllChildren(this DependencyObject dpo, Predicate predicate)
    {
        var results = new List();
        if (predicate == null)
            return results;


        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(dpo); i++)
        {
            var child = VisualTreeHelper.GetChild(dpo, i);
            if (predicate(child))
                results.Add(child);

            var subChildren = child.FindAllChildren(predicate);
            results.AddRange(subChildren);
        }
        return results;
    }

Example for your case:

 var children = dpObject.FindAllChildren(child => child is TextBox);