private void button1_Click(object sender, EventArgs e) { if (WorkerManager.CheckWorker(tbFirstName.Text, tbLastName.Text, tbPhone.Text, tbSalary.Text)) { if (WorkerManager.isEditWorker) { WorkerManager.EditWorker(tbFirstName.Text, tbLastName.Text, tbPhone.Text, Convert.ToDecimal(tbSalary.Text)); } else { WorkerManager.AddNewWorker(tbFirstName.Text, tbLastName.Text, tbPhone.Text, Convert.ToDecimal(tbSalary.Text)); } var workerList = new WorkerList(); this.Hide(); workerList.Show(); } }