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);
}