In C#, one approach to return multiple values without classes, ref, or out keywords is by utilizing tuples. Tuples allow combining multiple values into a single return value. Here’s an example demonstrating this technique:

using System;
class Program
{
 static (int, string) GetMultipleValues()
 {
 int number = 10;
 string text = "Hello";
 return (number, text);
 }
 static void Main()
 {
 var result = GetMultipleValues();
 Console.WriteLine($"Number: {result.Item1}, Text: {result.Item2}");
 }
}

The GetMultipleValues method returns a tuple containing an integer and a string. By deconstructing the tuple, you can access the individual values. Tuples provide a concise way to return multiple values without the need for additional classes or keywords.