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Basic Info:

C# is case sensitive. 
Variable <> variable

Main is a static method that designates a program's entry point. 
static void Main(string[] args)


A method's content should be enclosed by curly braces { }.
private myMethod() 
    //Do Stuff 

Each statement should be followed by a semicolon.
string myString; 
myString = "Hello World!";

Use double forward slash for commenting.
//This is my comment

Comment out a block of code.
/* This is a block of
commented code. It 
will not execute */

Create XML comments using triple forward slash and the <summary> and <remarks> tags
///This is my summary
///I have a remark to make about that

Use namespaces as a named container for your code. It's good practice to define all classes in namespaces.
namespace MyNameSpace
    class MyClass
        public DoStuff()
            \\Do Stuff

    class AnotherClass



Bring namespaces into scope(current file) with using 
using System;
using System.Text;


is less typing than


You can only use letters, numbers, and underscores for identifiers (The name of namespaces, classes, methods, and variables) and they cannot begin with a number.
Var is ok
_var is ok
var1 is ok
1var is NOT ok

A proper C# naming convention for identifiers is to use camelCase for all non-public identifiers and PascalCase or TitleCase  for public identifiers. Don't forget C# is case sensitive.


private myClass

public MyClass

Declare your variables with the type and name, then assign it a value.
int myInt;
string myString;

myInt = 42;
myString = "Forty Two";

You can also declare and initialize your variable in one statement.
int myInt = 42;

You can let the compiler infer the type of variable from an expression using the var keyword.
var myVariable = 42;

Initialize multiple variables at once.
int x, y, y;
string myString1, myString2;

Normal: + - * / < > %
Equality: ==
And : &&
Or: ||

Simple True/False evaluation. If input variables equals "1" then assign the first string after the question mark to result, otherwise assign the second string to result.
string result = (input == "1") ? "You entered the number 1." : "You entered something else."

FOR loop.
for (int i = 0; i < 10 ; i++)
    //Do something until i is no longer less than ten. i is initially assigned the value of 0 and through each iteration of the loop 1 is added to i using i++
    // for (assignment ; evaluate and execute block of code; increment){}

Arrays are immutable once they are defined.
int[] i = new int[10];

int[0] = 2;
int[1] = 4;
and so on...


int[] i = new int[] {2,4,6,8,10,12};


foreach loop to use with arrays.
foreach(int number in i)
    //Do something with each "number"

Create and array of letters using char data type.
string message = "These aren't the droids you are looking for!";
char[] charArray = message.ToCharArray();


While loop
StreamReader myReader = new StreamReader("values.txt");
string line = "";

while (line != null)
    line = myReader.ReadLine();
    if (line != null)

String manipulation.

escape character \
string myString = "c:\\folder";

string myString = String.Format("{0}, {1}!", "Hello", "World");