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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 below.
The user may click on
an Exit button on the form. Then, the application responds by executing the
event procedure
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 Figure.
The
user
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:
Private Function
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 first record
in the DataSet. Here's 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.
Definition – 2: An array of
which each element is itself an array
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