unboxdemo.cs

vc的原码例子12 vc的原码例子12

using System;

class clsBoxVariable
{
	public static void ChangeValue(ref object ReferenceValue)
	{
      ReferenceValue = 2002;
	}

	public static void Main ()
	{
		int iValue = 1700;
		object a;

		a = iValue;  // Box the variable
	
		ChangeValue(ref a);
	
		iValue = (int) a;

	    Console.WriteLine("{0}", iValue);
	}
}