bt0082 smu bsc it fall 2016 (jan/feb 2017 exam) IVth sem assignment

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PROGRAM

BSc IT

SEMESTER

FOURTH

SUBJECT CODE & NAME

BT0082, Visual Basic

Qus:1 Explain the event driven applications in VB.NET.

Answer:

Explain the event driven applications in VB.NET:

Visual Basic applications are event-driven, i.e., they work by responding to the events that occur on objects. To respond to an event, you code an event procedure (or event handler) as shown in Figure

Q2. Explain the event driven applications in vb.net. Explain common control events and common form events in vb.net.

ANS:

Visual Basic applications are event-driven, i.e., they work by responding to the events that occur on objects. To respond to an event, you code an eventprocedure (or event handler) as shown in

Qus:3 Describe the concept of Exit Try statement in VB.NET with an example.

Answer:

The concept of Exit Try statement in VB.NET with an example:

The Exit Try statement will, under a given circumstance, break out of the Try or Catch block and continue at the Finally block. In the following example, you are going to exit a Catch block if the value of iItems is 0, because you know that your error was caused by that problem:

Q4: How to objectify your programs?

ANS: In the really old days we practiced what we called structured, procedure oriented

programming. We identified what needed to be done and then did

one of two things, either:

1. Broke the task to be accomplished into subtasks, and these into

smaller

Q5: Explain the mechanics of Implementation of Interface.

ANS: Many programming shops (Microsoft, for example) subscribe to the notion of a lead programmer or lead tester on a team. Suppose you want to extend your employee management program to allow for the idea of a Lead Programmer or Lead Tester with certain special properties

Q6:Explain the mechanism of thread creation.

ANS:Let us start with a trivial example: suppose you want to run, in a separate

thread, a procedure that simply decrements a counter forever. Here is the

class that

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