private void EditUser()
        {
            if (this.dataGridViewUsers.CurrentRow == null && this.dataGridViewUsers.CurrentRow.DataBoundItem == null)
            {
                return;
            }
            User     dataBoundItem = this.dataGridViewUsers.CurrentRow.DataBoundItem as User;
            FormUser formUser      = new FormUser();

            formUser.Execute(dataBoundItem);
            int num = (int)formUser.ShowDialog();

            this.RefreshUsersGrid();
        }