Saving a combobox's concatenated text into a database

private void frmEmployeesJobs_Load(object sender, EventArgs e)
        {
            string empSql = string.Format("Select  (CAST(employee_id AS VARCHAR(MAX))+ ' - '+employee_name) as employee FROM employee");

            DataTable empTable = FillTable(empSql);
            cmbEmp.DisplayMember = "employee";
            cmbEmp.ValueMember = "employee";
            cmbEmp.DataSource = empTable;

            string jobSql = string.Format("Select  (CAST(job_id AS VARCHAR(MAX))+ ' - '+job_name) as job, job_price  FROM job");

            DataTable jobTable = FillTable(jobSql);
            
            cmbJob.DisplayMember = "job";
            cmbJob.ValueMember = "job_price";
            cmbJob.DataSource = jobTable;
        }

        private void cmbJob_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (cmbJob.SelectedIndex == -1)
            {
                txtPrice.Text = string.Empty;
            }
            else
            {
                txtPrice.Text = cmbJob.SelectedValue.ToString();
            }
        }