static void Main()
{
// normal
NormalClass.PrintStaticMessage();
var normalObject = new NormalClass("vaca");
normalObject.PrintValues();
// advanced
AdvancedClass.PrintHowManyInstances();
var advancedObject = new AdvancedClass();
AdvancedClass.PrintHowManyInstances();
advancedObject.PrintValues();
var advancedCopy = (AdvancedClass)advancedObject.Clone();
advancedCopy.PrintValues();
AdvancedClass.PrintHowManyInstances();
advancedCopy.Dispose();
advancedObject.Dispose();
// polymorphism
AbstractBaseClass abcOneDerived = new OneDerivedClass();
var oneDerived = new OneDerivedClass();
abcOneDerived.PrintMessage();
oneDerived.PrintMessage();
AbstractBaseClass abcOtherDerived = new OtherDerivedClass();
var otherDerived = new OtherDerivedClass();
abcOtherDerived.PrintMessage();
otherDerived.PrintMessage();
AbstractBaseClass abcExtra = new ExtraDerivedClass();
var extra = new ExtraDerivedClass();
abcExtra.PrintMessage();
extra.PrintMessage();
// casting
object o = abcOneDerived;
// o să arunce InvalidCastException:
//var s = (string)o;
// returnează null, nu aruncă excepție:
var s = o as string;
Console.WriteLine(
"o is OneDerivedClass: {0}",
o is OneDerivedClass);
Console.WriteLine(
"o is BaseClass: {0}",
o is BaseClass);
Console.WriteLine(
"o is AbstractBaseClass: {0}",
o is AbstractBaseClass);
Console.WriteLine(
"o is object: {0}",
o is object);
Console.WriteLine(
"o is string: {0}",
o is string);
}
static void Main()
{
// normal
NormalClass.PrintStaticMessage();
var normalObject = new NormalClass("vaca");
normalObject.PrintValues();
// advanced
AdvancedClass.PrintHowManyInstances();
var advancedObject = new AdvancedClass();
AdvancedClass.PrintHowManyInstances();
advancedObject.PrintValues();
var advancedCopy = (AdvancedClass)advancedObject.Clone();
advancedCopy.PrintValues();
AdvancedClass.PrintHowManyInstances();
advancedCopy.Dispose();
advancedObject.Dispose();
// polymorphism
AbstractBaseClass abcOneDerived = new OneDerivedClass();
var oneDerived = new OneDerivedClass();
abcOneDerived.PrintMessage();
oneDerived.PrintMessage();
AbstractBaseClass abcOtherDerived = new OtherDerivedClass();
var otherDerived = new OtherDerivedClass();
abcOtherDerived.PrintMessage();
otherDerived.PrintMessage();
AbstractBaseClass abcExtra = new ExtraDerivedClass();
var extra = new ExtraDerivedClass();
abcExtra.PrintMessage();
extra.PrintMessage();
// casting
object o = abcOneDerived;
// o să arunce InvalidCastException:
//var s = (string)o;
// returnează null, nu aruncă excepție:
var s = o as string;
Console.WriteLine(
"o is OneDerivedClass: {0}",
o is OneDerivedClass);
Console.WriteLine(
"o is BaseClass: {0}",
o is BaseClass);
Console.WriteLine(
"o is AbstractBaseClass: {0}",
o is AbstractBaseClass);
Console.WriteLine(
"o is object: {0}",
o is object);
Console.WriteLine(
"o is string: {0}",
o is string);
}