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PROGRAM
BSc
IT
SEMESTER
FOURTH
SUBJECT
CODE & NAME
BT0082,
Visual Basic
Q1.
Explain the process of extracting and drawing images using Image list control.
Answer:
The ImageList
control is most often used as a container for images and icons that are
employed by other controls, such as TreeView, ListView, TabStrip, and
ImageCombo controls. For this reason, it makes sense to describe it before any
other controls. The ImageList control is invisible at run time, and to display
one of the images it contains you must draw it on a form, a PictureBox control,
or an Image control, or
Q2.
Explain the concept of Inheritance in VB.Net.
Answer:
Although inheritance is hardly the
be-all, end-all of OOP, and interfaces are often a better choice, you
absolutely should not get the idea that you should avoid using inheritance.
Inheritance is a powerful tool that saves you a lot of work if you use it
correctly.
“Correctly” simply means
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,
Qus:4
Define SQL. Explain the select statement of SQL with examples.
Answer:
SQL:
SQL (pronounced
SeeKwel), is short for Structured Query Language, and is a way to query and
write to databases (not just Access). The basics are quite easy to learn. If
you want to grab all of the records from a
Qus:5
Describe the concept of record navigation in VB.NET.
Answer:
The
concept of record navigation in VB.NET:
(i) Move Back
One Record at a Time:
To move
backwards through the DataSet, we need to decrement the inc counter.
This means is deducting 1 from whatever is currently in inc. But we also
need to check that inc doesn't go past zero, which is the
Qus:6
Describe the concept of jagged arrays in visual basic with an example.
Answer:
The
concept of jagged arrays in visual basic with an example:
Definition – 1: An array of
which each element is itself an array is called an array of arrays, or a jagged
array.
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