What will be the output of the following program?.
class A {
public virtual void print() {
Console.WriteLine("A");
}
}
class B:A {
public override void print() {
Console.WriteLine("B");
}
}

class C:B {
public override void print() {
Console.WriteLine("C");
}
}

class D:C {
public override void print() {
Console.WriteLine("D");
}
}
static void Main(string[] args) {
D d=new D();
A a=d;
B b=d;
C c=d;
a.print();
b.print();
c.print();
d.print();
Console.ReadLine();

In this example creation of the object of type class3 calls the Class3 constructor and that constructor calls Class2 Constructor Class2 Calls Class1 Constructor.So first Class1 constructor will execute and then control will be trasfered to class2 constructor,After executing the class2 constructor the control will be treansfered to Class3 constructor.
means

Class1
|---->Sub New()---------------------|
| 'First it will execute <-----|
| End Sub |
| |
| Class2 |
|--->Sub New()----------------------|
| 'Second it will execute<-------|
| End Sub |
| |
| Class3 |
----Sub New()-----------------------|
'Third this will executes<-----|
End Sub

Means In the Creation of the object of type C, First Class1 Constuctor initializes the data, then class2 then class3.

So output of this program is
a in initialized in Class1
b in initialized in Class2
c in initialized in Class3
(More...)

1, 4-11
2, 2
3, -11
4, -3


Answer : 4 (More...)

1, The code will not compile.
2, The code will compile but will not execute.
3, The code will compile, execute, and display Hello as the output.
4, The code will compile, execute, but will not display anything.

Answer : 4 (More...)

1, The Example2 class will execute without any output.
2, The Example2 class will execute with the following output:5

3, The Example2 class will not compile as it does not calls the constructor of the Example 1 class.
4, The Example2 class will not execute as it does not calls the constructor of the Example 1 class.

Answer : 2 (More...)

Yes, Using "Session.Keys" we can get all session variables

In VB.NET

Dim strSesVar as string
For Each strSesVar In Session.Keys
Response.Write(strSesVar + " : " + Session(strSesVar).ToString() + "
")
Next


In C#

foreach (string strSesVar in Session.Keys)
{
Response.Write(strSesVar + " : " + Session[strSesVar].ToString() + "
");
} (More...)

The main steps to use the three-parameter AddJob(String, String, Boolean) method are as follows. (More...)

The main has to be called when the class is loaded (More...)

NULL can be value for pointer type variables.
VOID is a type identifier which has not size.
NULL and void are not same. Example: void* ptr = NULL; (More...)

Indexer (More...)

Make sure that the target type set in the project properties setting is set to Windows Application, and not Console Application. If you're using the command line, compile with /target:winexe, not /target:exe. (More...)