void addItem(object sender, EventArgs e)
        {
            using (BackupEventTaskInfoEditingForm form = new BackupEventTaskInfoEditingForm(_isBeforeBackupEvent))
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    addTaskInfoToList(form.EventTask);
                }
            }

            tasksListViewSelectedIndexChanged(sender, e);
        }
        void editSelectedItem(object sender, EventArgs e)
        {
            if (tasksListView.SelectedItems.Count != 1)
            {
                return;
            }

            int indexOfItem = tasksListView.SelectedItems[0].Index;

            using (BackupEventTaskInfoEditingForm form = new BackupEventTaskInfoEditingForm(_isBeforeBackupEvent, (BackupEventTaskInfo)tasksListView.SelectedItems[0].Tag))
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    BackupEventTaskInfo task = form.EventTask;

                    tasksListView.SelectedItems[0].SubItems[0].Text = task.Program;
                    tasksListView.SelectedItems[0].SubItems[1].Text = task.Arguments;
                    tasksListView.SelectedItems[0].Tag = task;
                }
            }
        }