This document discusses operators, functions, and options in .NET. It describes unary and binary operators that take one or two operands. It covers arithmetic, assignment, comparison/relational, logical/bitwise, and miscellaneous operators. It also discusses functions like vbCrLf and InputBox. The document explains options like Option Explicit and Option Strict that control variable declaration and type conversion. Finally, it provides an example of using the With...End With block to set multiple properties of a control.

1. .NET
Operators,
Functions ,Option
Shyam N. Chawda +91 7874391191 1

2. Operators
 An operator is a symbol or other character
indicating an arithmetic operation that acts
on one or more elements in an application.
 That take one operand are called unary
operators.
 That take two operands are called binary
operators.
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3. Operators
Arithmetic ^, –, *, /, , Mod, +
Assignment =, ^=, *=, /=, =, +=, -=,
&=
Comparison/
Relational
=, <>, <, >, <=, >=, Like, Is
Concatenation &, +
Logical/bitwise Not, And, Or, Xor, AndAlso,
OrElse
Miscellaneous
operations
AddressOf, GetType

4. Arithmetic
 is integer division.
 / is regular division.
 34 / 2.5 = 13.6
 34 2.5 = 17 (convert 2.5 into 2 then)
 ^ exponent operator.
 2^4 = 16
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5. Assignment
=
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6. Comparison / Relational
 =
 Dim a, b As Integer
a = 5
b = 10
If a = b Then
logic…….
End If
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7. Comparison / Relational
If TypeOf btnIntDiv Is Button Then
MsgBox("Hai")
End If
Use the TypeOf...Is operator to determine
whether a given object:
 Is an instance of a given class
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8. Comparison / Relational
Like
 Defined only for operands of type
String.
 The result is True if the first operand
matches the pattern given in the second
operand; False if not.
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9. Comparison / Relational
Dim ans As Boolean
ans = "F" Like "F"
ans = "F" Like "f"
ans = "F" Like "FFF"
ans = "aBBBa" Like "a*a"
ans = "F" Like "[A-Z]"
ans = "F" Like "[!A-Z]"
ans = "a2a" Like "a#a"
ans = "aM5b" Like "a[L-P]#[!c-e]"
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10. Comparison / Relational
ans = "BAT123khg" Like "B?T*"
ans = "CAT123khg" Like "B?T*"
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11. Logical /bitwise
AndAlso
 Only And?
 AndAlso performs logical short-circuiting: if
the first operand of the expression is False,
the second operand is not evaluated.
b = (93 > 67) AndAlso MyFunction()
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12. Logical /bitwise
OrElse
 OR ?
 OrElse performs logical short-circuiting: if
the first operand of the expression is True,
the second operand is not evaluated.
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13. Multiple statements in one line ( : )
x = 3 : y = 5 : z = 6
One statement in multiple lines ( _ )
name = "Mr." & " " & "Karna" & _
" " & "Bhavin" & " " & _
", Trivedi"
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14. Comment
 Comments are brief explanatory notes
added to code for the benefit of those
reading it.
 Comment ( )
Uncomment ( )
buttons on the Edit toolbar.
 REM:
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15. Option Explicit
 Used at file level to force explicit
declaration of all variables in that file.
 On (Default)
Enables Option Explicit checking.
 Off
Disables Option Explicit checking.
Default - Object type.
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16. Option Explicit
Option Explicit On
Dim MyVar As Integer
MyInt = 10
MyVar = 10
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17. Option Strict
 Restricts implicit data type conversions
 On
Generate an error
 Off (Default)
Compiler default is Option Strict Off if do not
specify Option Strict in your code.
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18. Option Strict
Dim MyVar As Integer
MyVar = 1000
'Attempting to convert to an Integer
generates an error.
MyVar = 1234567890.9876542
MsgBox(MyVar)
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19. Object data type
 Dim objDb As Object
 when you do not know at compile time
what data type the variable might point to.
 Can point to data of any data type,
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20. Object data type
 Whatever data type it refers to, an Object
variable does not contain the data value
itself, but rather a pointer to the value.
 It always uses four bytes in computer
memory, but this does not include the
storage for the data representing the value
of the variable.
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21. Object data type
 The Object data type is slower than using
explicit data types.
 The code that uses the pointer to locate
the data, Object variables holding value
types are slightly slower to access than
explicitly typed variables.
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22. IMP functions , constants
 vbCrLf
Carriage return/linefeed character
combination.
 vbNewLine
Newline character.
 vbTab
Tab character.
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23. IMP functions , constants
Space(Integer)
InputBox()
MsgBox()
MessageBox.Show()
Val()
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24. With…End With
 when we want to set number of properties
and methods related with one control or
object that time use with..end with block.
 It executes series of statement related to
one control or object
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25. With…End With
Syntax:
With objname
end With
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26. With…End With
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27. With…End With
With MyLabel
.Height = 200
.Width = 200
.Text = "Demo Label"
End With
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28. Thanks
Any questions?
www.shyamsir.com
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