Method Out Parameters in C#

Declaring an out method is useful when you want a method to return one or multiple values. The following example uses out to return one variable with a single method call.

using System;

class MethodOutParameters
{
    public static void Main(string[] args)
    {
        int value = 100;
        Console.WriteLine("Before Method Execution, value={0}", value);
        ChangeParameters(out value);
        Console.WriteLine("After Method Execution, value={0}", value);
    }
    static void ChangeParameters(out int value)
    {
        value = 200;
    }
}

Before Method Execution, value=100

After Method Execution, value=200