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Tell any one method use in form with out use of Class Object

Posted By :Abraham     Posted Date :August 29, 2010    Points :10   Category :.NET Framework 

You can also find related Interview Question to Tell any one method use in form with out use of Class Object  below: 

How can I look up a parent class method or property of any System-level object?

Use the Class View window, accessed from the standard toolbar by clicking View | Class View. (More...)

Which method is used to serialize an object into an XML document from Xmlserializer class?

The "Serialize" method is the first step of serialize process and used to create an XML document (More...)

Can we call a base class method without creating instance?

Its possible If its a static method.

Its possible by inheriting from that class also.

Its possible from derived classes using base keyword. (More...)

Can you allow class to be inherited, but prevent the method from being over-ridden?

Yes, just leave the class public and make the method sealed. (More...)

Name the Method of ServiceBase class?

The following are the methods of ServiceBase class.

· OnStart

· OnStop

· OnPause

· OnContinue

· OnShutdown

· OnPowerEvent

· OnCustomCommand (More...)

How can you access a private method of a class?

Use .Net Reflection. Using reflection we can invoke private methods too.


Car car = new Car();
Type type = car.GetType();
MethodInfo methodInfo = type.GetMethod("ShiftGearUp", BindingFlags.NonPublic | BindingFlags.Instance);
methodInfo.Invoke(car, null);

Pre: Create a class Car with private method "ShiftGearUp" (More...)

This is the progam using inheritence, what is the order of calling constructors and what is the output?
Public Class ConstructorEx
Public Class Class1
Dim a As Integer
Sub New()
a = 1
Console.WriteLine("a in initialized in Class1")
End Sub
End Class

Public Class Class2
Inherits Class1
Dim b As Integer
Sub New()
b = 1
Console.WriteLine("b in initialized in Class2")
End Sub
End Class
Public Class Class3
Inherits Class2
Dim c As Integer
Sub New()
c = 1
Console.WriteLine("c in initialized in Class2")
End Sub
End Class

Shared Sub main()
'Creation of the object of type Class3
Dim c As New Class3()
End Sub
End Class

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.

|---->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

Is the Where() method residing in List class or IList class?

It is an extension method in a static class Enumerable.cs (More...)

Relationship between Class and Object?

Class and object look very similar.
Class is a definition,while object is the instance of the class created.
Class is a blueprint while objects are actual objects exsisting in real world (More...)

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