private void btnEdit_Click(object sender, EventArgs e)
 {
     if (_clientService.GetAll().Count > 0)
     {
         ClientViewModel clientViewModel = (ClientViewModel)usersGridView.CurrentRow.DataBoundItem;
         Client          client          = _clientService.Get(clientViewModel.ClientId);
         AddEditUserForm addUserForm     = new AddEditUserForm(_clientService, _bindingSource, client);
         addUserForm.Show();
     }
 }
        private void btnAddClient_Click(object sender, EventArgs e)
        {
            AddEditUserForm addUserForm = new AddEditUserForm(_clientService, _bindingSource);

            addUserForm.Show();
        }