private void FrmHasil_OnPerhitungan(int index, float a, float b)
{
var cal = new Calculator();
if (index == 0)
{
lstHasil.Items.Add(string.Format("Hasil Penjumlahan {0} + {1} = {2}", a, b, cal.Penjumlahan(a, b)));
}
else if (index == 1)
{
lstHasil.Items.Add(string.Format("Hasil Pengurangan {0} - {1} = {2}", a, b, cal.Pengurangan(a, b)));
}
else if (index == 2)
{
lstHasil.Items.Add(string.Format("Hasil Perkalian {0} * {1} = {2}", a, b, cal.Perkalian(a, b)));
}
else
{
lstHasil.Items.Add(string.Format("Hasil Pembagian {0} / {1} = {2}", a, b, cal.Pembagian(a, b)));
}
}