public void CloseSubModule()
{
openedSubModule.Parent = null;
openedSubModule.Dispose();
openedSubModule = null;
UpdateButtonPanel();
}
void GotoModule(ModuleType mt, object param)
{
var moduleLocator = GetService <Services.IModuleLocator>();
openedSubModule = moduleLocator.GetModule(mt) as BaseModuleControl;
ViewModelHelper.EnsureModuleViewModel(openedSubModule, ViewModel, param);
openedSubModule.Dock = DockStyle.Fill;
openedSubModule.Parent = this;
openedSubModule.OnTransitionCompleted();
openedSubModule.BringToFront();
}