how do you use a function c# code example

Example 1: c# function return

// To create a function with a return value, note the variable
// type in front of the function name and add a return of the
// same type at the end.
static string lastFirst(string firstName, string lastName)
{
	string separator = ", ";
	string result = lastName + separator + firstName;
	return result;
}

Example 2: function c#

public int AddNumbers(int number1, int number2)
{
    int result = number1 + number2;
    return result;
}