static void Main6()
{
Class3 o = new Class3();
o.i = 100;
//DoSomething1(o);
//DoSomething2(o);
DoSomething3(ref o);
Console.WriteLine(o.i);
Console.ReadLine();
}
static void Main()
{
Class3 o1 = new Class3();
Class3 o2 = new Class3();
o1.i = 100;
o2.i = 200;
o1 = o2;
o2.i = 300;
Console.WriteLine(o1.i);
Console.WriteLine(o2.i);
//300,300
Console.ReadLine();
}
//reference type passed as ref - if new object is created, the calling code(Main) points to the new object
static void DoSomething3(ref Class3 obj) //obj = o
{
obj = new Class3();
obj.i = 200;
}
//reference type - changes made in func reflect back in calling code
static void DoSomething1(Class3 obj)
{
obj.i = 200;
}