private void btnSubmit_Click(object sender, EventArgs e) { klk = new Kalkulator(); klk.nama = this.cmbOperasi.Text.ToLower(); klk.operasi = string.Empty; klk.hasils = 0; klk.a = Double.Parse(this.txtNilaiA.Text); klk.b = Double.Parse(this.txtNilaiB.Text); if (this.cmbOperasi.SelectedIndex == -1) { MessageBox.Show("Silahkan Pilih Dulu Operasinya!!!"); } else if (this.cmbOperasi.SelectedIndex == 0) { klk.hasils = klk.a + klk.b; klk.operasi = "+"; } else if (this.cmbOperasi.SelectedIndex == 1) { klk.hasils = klk.a - klk.b; klk.operasi = "-"; } else if (this.cmbOperasi.SelectedIndex == 2) { klk.hasils = klk.a * klk.b; klk.operasi = "*"; } else if (this.cmbOperasi.SelectedIndex == 3) { klk.hasils = klk.a / klk.b; klk.operasi = "/"; } this.OnCreate(klk); }
private void FrmEntry_OnCreate(Kalkulator klk) { lstboxHasil.Items.Add("Hasil " + klk.nama + " " + klk.a + " " + klk.operasi + " " + klk.b + " " + "=" + " " + klk.hasils); }