Find controls of specific type

Find all controls of specific type by providing main control and complete type name.

public static void FindAllControlsByType(Control MainControl, string TypeName, System.Collections.ArrayList FoundControls)
{
// make sure it is ok to procees
if (MainControl == null || FoundControls == null)
return;

// iterate and search for required controls
foreach (Control child in MainControl.Controls)
{
if (child.GetType().ToString().Equals(TypeName))
FoundControls.Add(child);

// it may have nested controls
if (child.Controls.Count > 0)
FindAllControlsByType(child, TypeName, FoundControls);
}
}