static void Main(string[] args)
{
// Passing ref-types by value.
Console.WriteLine("***** Passing Person object by value *****");
Person fred = new Person("Fred", 12);
Console.WriteLine("]nBefore by value call, Person is:");
fred.Display();
SendAPersonByValue(fred);
Console.WriteLine("\nAfter by value call, Person is:");
fred.Display();
// Passing ref-types by reference.
Console.WriteLine("\n***** Passing Person object by reference *****");
Person mel = new Person("Mel", 23);
Console.WriteLine("Before by ref call, Person is:");
mel.Display();
SendAPersonByReference(ref mel);
Console.WriteLine("After by ref call, Person is:");
mel.Display();
Console.ReadKey();
}
static void SendAPersonByValue(Person p)
{
// Change the age of "p"?
p.personAge = 99;
// Will the caller see this reassignment?
p = new Person("Nikki", 99);
}
static void SendAPersonByReference(ref Person p)
{
// Change some data of "p".
p.personAge = 555;
// "p" is now pointing to a new object on the heap!
p = new Person("Nikki", 999);
}
static void Main(string[] args)
{
Console.WriteLine("Passing a class by value");
Person fred = new Person("Fred", 12);
Console.WriteLine("Before pass by val: ");
fred.Display();
SendAClassByValue(fred);
Console.WriteLine("After pass by val");
fred.Display();
SendAClassByReference(ref fred);
Console.WriteLine("After pass by ref");
fred.Display();
Console.ReadLine();
//Person p = new Person();
}
static void SendAClassByReference(ref Person p)
{
p.personAge = 555;
p = new Person("Nikki", 999);
}
static void SendAClassByValue(Person p)
{
p.personAge = 99;
p = new Person("Nikki", 99);
}
static void SendAPersonByValue(Person p) {
//change the age of "p"? YUUUP
p.personAge = 99;
//will the caller see this reassignment? NEWP
p = new Person("Nikki", 99);
}
