private void buttonApply_Click(object sender, EventArgs e) { if (textBoxClientName.Text.Length < 1 || !textBoxClientBirth.MaskCompleted) { MessageBox.Show("Необходимо полностью заполнить все поля", "Ошибка", MessageBoxButtons.OK); return; } if (edit) { String name = textBoxClientName.Text; String birth = textBoxClientBirth.Text; String number = textBoxClientNumber.Text; mainController.changeClient(name, birth, number, inputClient); this.Close(); } else { String name = textBoxClientName.Text; String birth = textBoxClientBirth.Text; String number = textBoxClientNumber.Text; mainController.registerClient(name, birth, number); this.Close(); } }