C# program

Question

I want to (1) read an unsorted text file that contains records of student information (studentUnsorted.txt) and display the data to a rich text box.(2) Will also want to sort the data and display to a rich text box.(3) Find the average, minimum, maximum, variance, and standard deviation of the student ages and write to the rich text box.  (4) write the information and the sorted data to a new file named studentSorted.txt.
 Please help.