private void TextBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Up)
{
IncrementIndex(sender);
}
else if (e.KeyCode == Keys.Down)
{
DecrementIndex(sender);
}
else if (e.KeyCode == Keys.Enter)
{
Point point = GetControlLocation(sender);
if (point.Y > 0)
{
Control index_control = controls[point.X, 0] as TextBox;
if (index_control != null)
{
long value = 0L;
if (long.TryParse((sender as TextBox).Text, out value))
{
int index = 0;
switch (point.Y)
{
case 1:
index = Numbers.PrimeIndexOf(value) + 1;
break;
case 2:
index = Numbers.AdditivePrimeIndexOf(value) + 1;
break;
case 3:
index = Numbers.NonAdditivePrimeIndexOf(value) + 1;
break;
case 4:
index = Numbers.CompositeIndexOf(value) + 1;
break;
case 5:
index = Numbers.AdditiveCompositeIndexOf(value) + 1;
break;
case 6:
index = Numbers.NonAdditiveCompositeIndexOf(value) + 1;
break;
case 7:
index = Numbers.DeficientIndexOf(value) + 1;
break;
case 8:
index = Numbers.AbundantIndexOf(value) + 1;
break;
default:
index = 0;
break;
}
index_control.Text = index.ToString();
if (index == 0)
{
(sender as TextBox).Text = "";
index_control.Text = "";
}
}
}
}
}
}