private void NewItem()
        {
            var editWorkItem =
                new EditWorkItem(
                    _workApplicationService,
                    _weekApplicationService,
                    _assigneeApplicationService,
                    _epicApplicationService,
                    new WorkItemViewModel());

            editWorkItem.ShowDialog();

            var filters = GetFilters();

            LoadWorkItems(filters);
        }
        private void DataGridWorkItem_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            _workItem = (WorkItemViewModel)DataGridWorkItem.SelectedItem;

            if (_workItem != null)
            {
                var editWorkItem =
                    new EditWorkItem(
                        _workApplicationService,
                        _weekApplicationService,
                        _assigneeApplicationService,
                        _epicApplicationService,
                        _workItem);

                editWorkItem.ShowDialog();

                var filters = GetFilters();
                LoadWorkItems(filters);
            }
        }