Published:
21 Feb 2005
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Abstract
A quick cheat sheet that highlights some key syntactical differences between C# and VB.NET. While this is not all inclusive this cheat sheet proves to be a handy reference. |
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by Steven Swafford
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| C# and VB.NET Comparison Cheat Sheet |
This document is an authorized derivative of Frank McCown's "VB.NET and C# Comparison" (C) 2005 at http://www.harding.edu/USER/fmccown/WWW/vbnet_csharp_comparison.html
This work is licensed under a Create Common License
[ Download Word Version or PDF Version ]
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Comments |
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VB.NET
'Single line only
Rem Single line only |
C#
// Single line
/* Multiple
line */
/// XML comments on single line
/** XML comments on multiple lines */ |
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Program Structure |
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VB.NET
Imports System
Namespace MyNameSpace
Class HelloWorld
'Entry point which delegates to C-style main Private Function
Public Overloads Shared Sub Main()
Main(System.Environment.GetCommandLineArgs())
End Sub
Overloads Shared Sub Main(args() As String)
System.Console.WriteLine("Hello World")
End Sub 'Main
End Class 'HelloWorld End Namespace 'MyNameSpace |
C#
using System
Namespace MyNameSpace
{
class HelloWorld
{
static void Main(string[] args)
{
System.Console.WriteLine("Hello World")
}
}
}
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Data Types |
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VB.NET
'Value Types
Boolean
Byte
Char (example: "A")
Short, Integer, Long
Single, Double
Decimal
Date
'Reference Types
Object
String
Dim x As Integer
System.Console.WriteLine(x.GetType())
System.Console.WriteLine(TypeName(x))
'Type conversion
Dim d As Single = 3.5
Dim i As Integer = CType (d, Integer)
i = CInt (d)
i = Int(d) |
C#
//Value Types
bool
byte, sbyte
char (example: 'A')
short, ushort, int, uint, long, ulong
float, double
decimal
DateTime
//Reference Types
object
string
int x;
Console.WriteLine(x.GetType())
Console.WriteLine(typeof(int))
//Type conversion
float d = 3.5;
int i = (int) d |
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Constants |
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VB.NET
Const MAX_AUTHORS As Integer = 25
ReadOnly MIN_RANK As Single = 5.00 |
C#
const int MAX_AUTHORS = 25;
readonly float MIN_RANKING = 5.00;
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Enumerations |
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VB.NET
Enum Action
Start
'Stop is a reserved word
[Stop]
Rewind
Forward
End Enum
Enum Status
Flunk = 50
Pass = 70
Excel = 90
End Enum
Dim a As Action = Action.Stop
If a <> Action.Start Then _
'Prints "Stop is 1"
System.Console.WriteLine(a.ToString & " is " & a)
'Prints 70
System.Console.WriteLine(Status.Pass)
'Prints Pass
System.Console.WriteLine(Status.Pass.ToString())
Enum Weekdays
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
End Enum 'Weekdays |
C#
enum Action {Start, Stop, Rewind, Forward};
enum Status {Flunk = 50, Pass = 70, Excel = 90};
Action a = Action.Stop;
if (a != Action.Start)
//Prints "Stop is 1"
System.Console.WriteLine(a + " is " + (int) a);
// Prints 70
System.Console.WriteLine((int) Status.Pass);
// Prints Pass
System.Console.WriteLine(Status.Pass);
enum Weekdays
{
Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday
}
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Operators |
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VB.NET
'Comparison
= < > <= >= <>
'Arithmetic
+ - * /
Mod
\ (integer division)
^ (raise to a power)
'Assignment
= += -= *= /= \= ^= <<= >>= &=
'Bitwise
And AndAlso Or OrElse Not << >>
'Logical
And AndAlso Or OrElse Not
'String Concatenation
& |
C#
//Comparison
== < | |
