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PROGRAM-BCA (REVISED FALL
2012)
SEMESTER-5
SUBJECT CODE & NAME-BCA5020-
VISUAL PROGRAMMING
CREDIT-4
BK ID-B1872
MAX. MARKS-60
Q1. What is event
driven programming? List and explain the advantages of event driven programming.
Answer:
Event driven
programming
In
event driven or event based programming the flow of program is determined by
events. It relies on events, triggers and handlers, program executed based on
the event will be triggered by the GUI elements. Event
Q2. What is IDE? List
and explain its components. Discuss the environment with windows IDE
environment.
Answer:
IDE:
An
integrated development environment (IDE) is a programming environment that has
been packaged as an application program, typically consisting of a code editor,
a compiler, a debugger, and a graphical user interface (GUI)
Q3. Explain the
comparison and logical operators available in VB .NET.
Answer:
Comparison and logical
operators available in VB .NET
Comparison operators:
These
operators compare the relationship between given string or numbers and have the
value one if the condition is true otherwise 0 for false. String will be
generally compared by taking the character one by one from each of the
Q4. Discuss the concept
of constructor and destructor with appropriate example.
Answer:
Concept of constructor
and destructor with example:
Constructor
is defined as constructor in a class is
a special type of subroutine is called to create an object. It prepares the
Q5. What is attributes?
Explain its properties. Discuss the targets of attributes.
Answer.
Attributes:
Attributes
provide a powerful method of associating metadata, or declarative information,
with code (assemblies, types, methods, properties, and so forth). After an
attribute is associated with a program entity, the
Qus:6 Briefly explain the
following terms:
·
Exception
·
Try
·
Catch
·
Throw
·
Finally
Answer:
a)
Exception: Unexpected conditions generated error codes, which
were confined by programming logic that took appropriate action. The CLR
(Common Language Runtime) in .NET does not generate error codes. When an
unexpected condition occurs, the CLR creates a special object called an
exception. This object contains
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