private void ContractsListView_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (currentEditWindow != null && currentEditWindow.IsVisible)
            {
                currentEditWindow.Close();
            }
            EditTabs result = Globals.openEditOn(ContractsListView);

            if (result != null)
            {
                currentEditWindow = result;
            }
        }