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Operators in VB.NET

A special symbol that provides certain process according to requirement is known as operator.
Information is not extremely useful if you can’t do anything with it. Operators perform actions on values, producing a result. For example, the addition operator (+) takes two numbers and adds them together.
It has mainly two types of operator:
1.      Unary operator
2.      Binary operator

Unary Operator
An operator that acts on one operand is called a unary operator.
Example: -10
Binary Operator
An operator that acts on two operands is called a unary operator.
Example: 15 - 10
It has some sub operators:
1.      Arithmetic operators
2.      Comparison operators
3.      Logical operators
4.      Concatenation operators
5.      Miscellaneous operators

Arithmetic Operators
Purpose: To perform arithmetic process
Operators
Symbol
Addition
+
Subtraction
-
Multiplication
*
Division
/
Modulus
Mod
Equal to
=

Relational Operators
Purpose: To compare values, expression or variable for taking decision and other process.
Operators
Symbol
Less than
<
Less than equal to
<=
Greater than
>
Greater than equal to
>=
Not equal to
!=

Logical/Bitwise Operators
Purpose: To set some boundary according to a specific condition.
Operators
Symbol
AND
(compulsory True)
and
OR
(Optional any one)
Or
AND ALSO
(If first is false then no further checking will be performed)
and also
OR ELSE
(If first expression is true, then no further checking)
or else


Example: and also
Dim a = 10, b AsInteger = 20
If a < 5 AndAlso b > 10 Then
      Label1.Text = "Match"
Else
      Label1.Text = "Not match"
EndIf

Example: or else
Dim a = 10, b AsInteger = 20
If a > 4AndAlso b > 10 Then
      Label1.Text = "Match"
Else
      Label1.Text = "Not match"
EndIfc

Concatenation Operators
Purpose: To join two or more String
It uses “&”and “+” operator to perform its task.
Example:
Msgbox(“First name = “ & textbox1.text & “ Middle name = “ & textbox2.text )

Miscellaneous Operators
Purpose: For special operation or process
1.     Shorthand operators

a += 6 means a = a + 6
a -= 6 means a = a - 6
a *= 6 means a = a * 6
a /= 6 means a = a / 6

Note:In .net a++ (postfix) and ++a (prefix) is not available.

2.     Datatype presenter
gettype()
Example:
Dim a as integer
msgBox(a.GetType().ToString)

It will print System.Int32


Posted By: Chaudhary Amit V.
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