Windows Application Form in Visual Studio C#

Contains 3 parallel arrays for 3 students
Labels for student 1, student 2, student 3
Name, Age, and GPA should have three text boxes underneath each one

I need it to be coded to where you can input data for three students and it will save into a text file. There needs to be a Save button so it can save to the text file and two text boxes to the right of it to display the average age and average GPA.