private void frmSearchClientForm_Load(object sender, EventArgs e)
        {
            Client client = new Client();

            //Retrieve all clients by calling business method
            DataTable clientDt = client.GetAllClients();

            //Bind Item Categories to drop down
            cmbBoxClientName.SelectedIndex = -1;
            cmbBoxClientName.DataSource = clientDt;
            cmbBoxClientName.DisplayMember = "ClientContactName";
            cmbBoxClientName.ValueMember = "ClientId";
            cmbBoxClientName.Enabled = true;
        }