private void btnRefresh_Click(object sender, EventArgs e)
        {
            Cursor.Current = Cursors.WaitCursor;

            IEnumerable <ActionLog> items;

            items = App.CurrentUser.User.RoleClass.Can("SysAdmin")
                ? ActionLog.GetAllLogs()
                : ActionLog.GetAllLogs(App.CurrentUser.User.Username);


            //dataGridView1.DataSource = items;
            actionLogBindingSource.DataSource = items;
        }