Creating VB .Net Project Introduction to VB .Net Creating VB .Net Project in VS 2005 Data types and Operators in VB .Net Conditions (If Else, Select Case) Loops (Do While, Do Until, For) Classes, Objects Sub routines and Functions Features of VB .Net Data types and Operators in VB .Net Subroutines and Functions

1. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Affiliated Institution of G.G.S.IP.U, Delhi
Priyanka Rattan
Assistant Professor(IT)
BCA, FEDT VB .NET,20205

2. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Topics
• Introduction to VB .Net
• Creating VB .Net Project in VS 2005
• Data types and Operators in VB .Net
• Conditions (If Else, Select Case)
• Loops (Do While, Do Until, For)
• Classes, Objects
• Sub routines and Functions

3. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Introduction
• VB .Net is developed by Microsoft
• It is Visual Basic for .Net Platform
• Ancestor of VB .Net is BASIC
• In 1991, Microsoft added visual components
to BASIC and created Visual Basic
• After the development of .Net, VB was added
with more set of controls and components
and thus evolved a new language VB .Net

4. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Pros and Cons
• Pros
– Faster development of programs
– Rich set of controls
– Object Orientation of language enhances
modularity, readability and maintainability
• Cons
– Debugging larger programs is difficult, due to the
absence of an effective debugger

5. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Features of VB .Net
• Object Oriented Language
• We can drag controls from the tool bar and
drop them on the form and write code for the
controls
• Runs on the CLR (Common Language Runtime)
• Release of unused objects taken care by the
CLR

6. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Creating VB .Net Project in VS 2005
• Open Visual Studio 2005
• Click File -> New -> Project
• Choose Language as VB .Net
• Choose Type (Either Console Application or
what ever we want)
• Give the path under which the project need to
be saved
• Click OK

7. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Data types and Operators in VB .Net
• Data types
– Integer, string, single, double, boolean, char
• Operators
– Arithmetic (+,-,*,/,,Mod)
– Logical (Or, And)
– Relational (=,<>,<,<=,>,>=)

8. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
If Else
If (Condition)
Then
Statements executed if condition is true
Else
Statements executed if condition is false
EndIf
We can also have Else If block in If Else
statements

9. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Select Case
Select Case var
Case 1
stmt1// executed if var = 1
Case 2
stmt2// executed if var = 2
Case Else
stmt3// executed if var is other than 1 and 2
End Select

10. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
For Loop
For <<var>> = start To end Step <<val>>
Statements
Next
Eg
For I = 1 To 10 Step 2
msgbox(l)
Next
Here the values printed will be 1,3,5,7,9

11. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Do While Loop
1. Do While(a<>0)
msgbox(a)
a = a – 1
Loop
2. Do
msgbox(a)
a = a – 1
Loop While(a<>0)

12. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Do Until Loop
1. Do Until(a=0)
msgbox(a)
a = a – 1
Loop
2. Do
msgbox(l)
a = a – 1
Loop Until(a=0)

13. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Class
• Software structure that is important in Object
Oriented Programming
• Has data members and methods
• Blue print or proto type for an object
• Contains the common properties and
methods of an object
• Few examples are Car, Person, Animal

14. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Object
• Instance of a class
• Gives Life to a class
• Ram is an object belonging to the class Person
• Ford is an object belonging to the class Car
• Jimmy is an object belonging to the class
Animal

15. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Subroutines and Functions
• Subroutines
– Does not return any value
– Can have zero or more parameters
• Functions
– Always Returns some value
– Can have zero or more parameters