HI there, I'm slightly new to programming, more of a hobby. I am wondering if a the following logic or technique has a specific name, or term. My current project has 7 check boxes, one for each day of the week. I needed an easy to save which boxes were checked.
The following is the method to saved the checked boxes to a single number. Each checkbox gets a value that is double from the last check box. When I want to find out which boxes are checked, I work backwards, and see how many times I can divide the total value by the checkbox value.
private int SetSelectedDays()
{
int selectedDays = 0;
selectedDays += (dayMon.Checked) ? 1 : 0;
selectedDays += (dayTue.Checked) ? 2 : 0;
selectedDays += (dayWed.Checked) ? 4 : 0;
selectedDays += (dayThu.Checked) ? 8 : 0;
selectedDays += (dayFri.Checked) ? 16 : 0;
selectedDays += (daySat.Checked) ? 32 : 0;
selectedDays += (daySun.Checked) ? 64 : 0;
return selectedDays;
}
private void SelectedDays(int n)
{
if ((n / 64 >= 1) & !(n / 64 >= 2))
{
n -= 64;
daySun.Checked = true;
}
if ((n / 32 >= 1) & !(n / 32 >= 2))
{
n -= 32;
daySat.Checked = true;
}
if ((n / 16 >= 1) & !(n / 16 >= 2))
{
n -= 16;
dayFri.Checked = true;
}
if ((n / 8 >= 1) & !(n / 8 >= 2))
{
n -= 8;
dayThu.Checked = true;
}
if ((n / 4 >= 1) & !(n / 4 >= 2))
{
n -= 4;
dayWed.Checked = true;
}
if ((n / 2 >= 1) & !(n / 2 >= 2))
{
n -= 2;
dayTue.Checked = true;
}
if ((n / 1 >= 1) & !(n / 1 >= 2))
{
n -= 1;
dayMon.Checked = true;
}
if (n > 0)
{
//log event
}
}
The method works well for what I need it for, however, if you do see another way of doing this, or a better way to writing, I would be interested in your suggestions.
