Counting regular working days in a given period of time

Question

need some help. I need to count regular working days for a given date period, for example, in our country, we have 5 regular working days monday to friday, then in code i ne

Answer 1

int count = 0;
switch (dateTimePicker2.Value.DayOfWeek.ToString())
{
    case "Saturday": count--; break;
    case "Sunday": count--; break;
    default:break;
}
switch (dateTimePicker3.Value.DayOfWeek.ToString())
{
    case "Saturday": count--; break;
    case "Sunday": count--; break;
    default:break;
}
if (count == -2)
    count = -1;
int weeks = t.Days / 7;
int daycount =count+ t.Days - (2 * weeks)+1;
label7.Text = "No of Days : " + daycount.ToString();