Calculate the start-date and name of a quarter from a given date

Question

How can I find the start-date and name (1, 2, 3, etc.) of a quarter from a given date?

Answer 1

int GetQuarterName(DateTime myDate)
{
    return (int)Math.Ceiling(myDate.Month / 3.0);
}

DateTime GetQuarterStartingDate(DateTime myDate)
{
    return new DateTime(myDate.Year,(3*GetQuarterName(myDate))-2,1);
}

GetQuarterName gets the "next" integer value of the current month number / 3.

GetQuarterStartingDate uses the output from GetQuarterName to work out the month value, the year part of the original date, and 1 to represent the first day of the month to return.

(Apologies for making no sense, I have flu. :( )