re: C# Help. I always have dumb face on.

1. Implement a console application that does the following: Prompt and read in two DateTime values from the user. Calculate and output a) if the first date is before the second or not; b) the difference in hours between the two dates, and c) if the second date falls in a leap year.

2. Write a console program for the following (you can add this to the same program as above if desired). Prompt the user to enter a value.
• If it is a date, write it in long date format (ex.: February 11, 2015).
• If it is numeric, write it twice (on the same line), once as a currency value, and the second in “9,990.000” style format.

3. Write a form application that does all the following (have a separate button for each on the form):
a. Given a number of days N that a user specifies in a textbox, calculate and output to a label the date N days from the current date (in short date format). N can be negative, but must be numeric. Validate user input is numeric before attempting the calculation.
b. Without using the C# date functions, write the number of days in a month to a label given a user specified month and year. In addition to the basic rule of "30 days hath September, April, June, and November; All the rest have thirty-one except February (which has 28)", there are the rules concerning leap years (which adds an extra day):
A year is a leap year if it is divisible by 4
EXCEPT when the year is a centennial
UNLESS it is also divisible by 400.
Also write the result from the C# DateTime .IsLeapYear() function to a separate label.


I was eventually able to do 1 and 2 but needed some help. 3b is where I am stuck. Teacher wants us to do cases.