Selects a sub folder (if existant) of the name given as a parameter
if p_FolderName is null an ArgumentNullException is thrown.
if no node is currently selected nothing happens and false is returned.
if no sub folder of the given name exists the method returns false as well.
- p_FolderName (String)
- the foldername to search for in the child-ShellTreeNode of the currently selected node.
true if p_FolderName could be selected as a subfolder