c# - How can I fix the error : "Unreachable Code Detected"

Question

public partial class KalenderLeeftijd : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void calBirthDate_SelectionChanged(object sender, EventArgs e)
{

}
private string GetAnswer()
{
    DateTime birthday = calBirthDate.SelectedDate;
    TimeSpan difference = DateTime.Now.Date - birthday;
    int leapYears = CountLeapYears(birthday);

    int days = (int)difference.TotalDays - leapYears;
    int hours = (int)difference.TotalHours - leapYears * 24;

    int years = days / 365;

    String answer = String.Format("Age: {0} years", years);
    answer += Environment.NewLine;
    answer += String.Format("Days: {0}*365+{1} = {2}", years, days - years * 365, days);
    answer += Environment.NewLine;
    answer += String.Format("Days Hours: {0}*24 = {1}", hours / 24, hours);
    return answer;
}

private int CountLeapYears(DateTime startDate)
{
    int count = 0;
    for (int year = startDate.Year; year <= DateTime.Now.Year; year++)
    {
        if (DateTime.IsLeapYear(year))
        {
            DateTime february29 = new DateTime(year, 2, 29);
            if (february29 >= startDate && february29 <= DateTime.Now.Date)
            {
                count++;
            }
        }
    }
    return count;
    String answer = GetAnswer();
    Response.Write(lblAntwoord); 
}
}

Why do I get the error : "Unreachable code detected"? - The error is shown on the following line - String answer = GetAnswer();

Answer 1

It's just because your code comes after the return statement.

The return statement terminates execution of the method in which it appears and returns control to the calling method. It can also return an optional value. If the method is a void type, the return statement can be omitted.

If the return statement is inside a try block, the finally block, if one exists, will be executed before control returns to the calling method.

http://msdn.microsoft.com/en-us/library/1h3swy84%28v=vs.100%29.aspx

solution (obvious) :

move the unreachable code before the return statement.