static void ChangeValues(MyClass Class, MyStruct Struct)
{
Class.a = 11;
Class.b = 12;
Struct.x = 13;
Struct.y = 14;
}
static void Main(string[] args)
{
MyClass Class1 = new MyClass(1, 2);
MyStruct Struct1 = new MyStruct(3, 4);
// the class and struct are both instantiated with original values, and these are displayed in the console
Console.WriteLine("Class1 Original: a = {0} , b = {1} ", Class1.a.ToString(), Class1.b.ToString());
Console.WriteLine("Struct1 Original: x = {0} , y = {1} ", Struct1.x.ToString(), Struct1.y.ToString());
Console.WriteLine();
// now the ChangeValues method is run, and the values are displayed again. the classes values have been changed,
// while the structs have not, because the method takes in the class as a reference, creating a new pointer to the same
// location in memory as the instantiated class, while the method takes in the struct as a value,
// creating an entirely new struct object, and not changing the original struct.
ChangeValues(Class1, Struct1);
Console.WriteLine("Class1 After ChangeValues: a = {0} , b = {1} ", Class1.a.ToString(), Class1.b.ToString());
Console.WriteLine("Struct1 After ChangeValues: x = {0} , y = {1} ", Struct1.x.ToString(), Struct1.y.ToString());
Console.WriteLine();
// this time the ChangeValuesRef method is run, and the values are displayed once more. both the values for the class
// and the struct are changed, because the method takes in the objects both as reference types by using the ref
// keyword.
ChangeValuesRef(ref Class1, ref Struct1);
Console.WriteLine("Class1 After ChangeValuesRef: a = {0} , b = {1} ", Class1.a.ToString(), Class1.b.ToString());
Console.WriteLine("Struct1 After ChangeValuesRef: x = {0} , y = {1} ", Struct1.x.ToString(), Struct1.y.ToString());
Console.WriteLine();
//Wait for user to acknowledge result
Console.WriteLine("Press Enter to terminate...");
Console.Read();
}
static void ChangeValuesRef(ref MyClass Class, ref MyStruct Struct)
{
Class.a = 21;
Class.b = 22;
Struct.x = 23;
Struct.y = 24;
}