Method Parameters....

[Opticknerve]

Hy guys its me again with another question from my book..... Something seems wrong with my solution the the question but i just cant put my finger on it...

Question from my C# book....

Write a method to multiply a number by 10. The method must not return anything, but must manipulate a parameter passed by value. Write another method similer to the first one but pass the parameter by reference. Compare the results of the methods by writing to the console.

using System;
class MethodParameters
{
	
	
	public int MulitplyValue(int numVal1, int numVal2)
	{
		numVal1 = 7;
		Console.WriteLine("This is numVal1 before MulitplicationValue method :" + numVal1);
		return numVal1 * numVal2;
			
	}
	
	public int MultiplyRef(ref int numRef1, int numRef2)
	{
		numRef1 = 12;
		Console.WriteLine("This is numRef1 before MultiplicationRef method   :" + numRef1);
		return numRef1 * numRef2;
	}
	
	
	
}
class TestNum
{
	public static void Main()
	{
		int numVal1 = 15;
		const int numVal2 = 10;
		int numVal3;
		
		int numRef1 = 30;
		const int numRef2 = 10;
		int numRef3;
		MethodParameters valuesReferences = new MethodParameters();
		numVal3 = valuesReferences.MulitplyValue(numVal1, numVal2);
		Console.WriteLine("NumVal1 within the multiplicationValue method   : " + numVal3);
		Console.WriteLine("numVal1 after multiplicationValue method        : " + numVal1);
		numRef3 = valuesReferences.MultiplyRef(ref numRef1, numRef2);
		Console.WriteLine("NumRef1 within the muliplicationRef method      : " + numRef3);
		Console.WriteLine("NumRef1 after the multiplicationRef method      : " + numRef1);
			
	}
		
}