public EditWorkplaceForm(Guid? workplaceId = null)
{
InitializeComponent();
this.workplaceId = workplaceId.HasValue
? workplaceId.Value : Guid.Empty;
taskPool = new TaskPool();
taskPool.OnAddTask += taskPool_OnAddTask;
taskPool.OnRemoveTask += taskPool_OnRemoveTask;
typeControl.Initialize<WorkplaceType>();
modificatorControl.Initialize<WorkplaceModificator>();
}