private void btnDeleteClient_Click(object sender, EventArgs e) { Clients clients = new Clients(); clients.ClientID = int.Parse(txtID.Text); clients.ClientName = txtName.Text; clients.ClientPhone = txtPhone.Text; ABCServices services = new ABCServices(); StateEnum result = services.DeleteClient(clients); switch (result) { case StateEnum.Fail: MessageBox.Show("Can't Delete Client"); break; case StateEnum.Success: MessageBox.Show("Client Deleted"); break; } RefreshList(); }