VB.NET QUICK REFERENCE

Namespace

Imports Namespace

Data Types

Boolean,Byte,Char,DateTime,Decimal,Double,Int16,Int32,Int64,Integer,

Long, Object, Short,Single,String,IntPtr,UInteger,UintPtr

Variable Declaration

Dim | Public | Private <variable_name> As <type>

Type Declaration

Dim | Public <variable><suffix>

Suffixes

% -Integer. $ - String, @ - Decimal, & - Long, # - Double, ! - Single

Arrays

Dim <arrayname>(<MaxIndexVal>) As <type>

Dim <arrayname>(<LowerBound> To <UpperBound>) As <type>

Initialize Array

Dim <arrayname>() As <type> = {<value1>, <value2>, ... , <valueN>}

Change Size of Array

ReDim <arrayname>(<MaxIndexVal>)

Comments

'Comment text

'No multi-line comments at this time

XML Comments

Press the ' (apostrophe) key thrice.

Line Continuation

strtext = “To break a long string across multiple lines, “ & _

“end the string, add the line continuation character “ & _

“and continue the string on the next line.”

Arithmetic Operators

+ (Addition), - (Subtraction), * (Multiplication), / (Division), % (Modulus)

String Concatenation

+, &

Relational Operators

< (Less Than), <= (Less Than or Equal To),> (Greater Than),>=

(Greater Than or Equal To),= (Equal To),<> (Not Equal To)

Logical Operators

OR, NOT, AND, AndAlso, OrElse, Xor

String Manipulation

.Substring(<start>,[<length>])

.Trim() <trims from beginning & end of string>

.TrimEnd([<char array>])

.TrimStart([char array])

.ToLower() <to lower case>

.ToUpper() <to upper case>

.Replace(<find>,<replace>)

.Equals(<expression>) <6 available overloads>

.Contains(<string>)

.Join(<seperator>,<value>,[<count>])

.Compare(<string1>,<string2>,[<ignore case>]) <7 overloads available>

.Copy(<string>)

If Else

If(<expression>) Then

<statement 1>

Else

<statement 2>

End If

Inline If

variable = IIf( condition, value_if_false, value_if_true )

For Loop

For <initialize> (Relational Operator) <condition>

<statement>

Next

For Each Loop

For Each <variable> In <object>

[Exit For]

<statements>

[Continue For]

<statements>

Next

While Loop

While <expression>

<statement>

End While

Do-While Loop

Do

<statement>

Loop While <expression>

Select Case Statement

Select Case <expression>

Case <expression1>:

<statement sequence 1>

Case <expression2>

<statement sequence 2>

Case <expressionN>

<statement sequence N-1>

Case Else

<statement sequence N>

End Select

Function Structure

<Private, Public> <Function_Name>([Parameters])

body of the function

End Function

Class Structure

Public Class <Class_Name>

body of class

End Class

Error Handling

Try

<statements that may cause an error>

Catch

<statements to use when an error occurs>

Finally

<statements to use no matter what happens>

End Try