This document provides an introduction to C# programming. It discusses key C# concepts like object-oriented programming, the .NET framework, and how to set up a development environment in Visual Studio. It also covers basic syntax like namespaces, classes, methods, variables, data types, operators, control flow, and input/output. Examples are provided to demonstrate how to write, compile, and run a simple C# console application that prints "Hello World".

1. Introduction to C# Programming
Company
LOGO

2. 



C#
Arithmetic
Expressions)
Raptor

3. C#




Programming – OOP)
Object-Oriented
.NET
Java
C++
.NET

4. .NET

5. 
Text Editor
csc.exe
C:WINDOWSMicrosoft.NETFramework
v4.0.30319 (VS 2010 Express)

Integrated
Development Environment (IDE)
Text Editor

Microsoft Visual C#


6. C#
Application)
solution)

solution)
project)

 VC# -> Console Application

7. New Project

8. New Project

9. C#
Namespace
2
class
namespace Hello
{
3
start point
class HelloClass
1
{
static void Main ()
{
System.Console.WriteLine("Hello World!");
4
System.Console.ReadLine();
}
}
code
}

10.  Write
WriteLine

Console
System

System.Console.Write( "Hello");
Console.Write("Hello");

System
using System;

11. Formatting String
{index [,alignment] [:formatSpecifier]}
 Console.WriteLine(" Two sample integers
are { } and { }. ", ,
 Index 0
 Console.WriteLine("{0,-9}{0,9}",
12,45);


12. Formatting String
Console.WriteLine("x = {0} y = {1}",123,456);
Console.WriteLine("123456789");
Console.WriteLine("{0,9}", 123);
Console.WriteLine("123456789");
Console.WriteLine("{0,-9}End", 123);
Console.WriteLine("123456789123456789");
Console.WriteLine("{0,-9}{0,9}", 123,456);

13. Formatting String
E
e
Exponential (
F
f
Fixed-point (
G
g
General (
N
n
Number (
2
Fixed-point
comma
P
p
Percentage (
X
x
Hexadecimal (
3

14. Formatting String
int n = 123456789;
Console.WriteLine("{0:E}", n);
Console.WriteLine("{0:F}", n);
Console.WriteLine("{0:G}", n);
Console.WriteLine("{0:N}", n);
Console.WriteLine("{0:P}", n);
Console.WriteLine("{0:X}", n);

15. Escape Sequence
Escape Sequence
n
n
t
t
r
r
"
tab
Backslash ()
"
double quote (")

16. Escape Sequence
Console.WriteLine("Welcome ntonC#nProgramming!");

17.  Read, ReadLine

System
ReadKey
Console

18. 
Read
ASCII Code)
int a;
Console.Write("Input : ");
a = Console.Read();
Console.WriteLine(a);
Console.ReadKey();

19. 
Read
ASCII Code)
int a;
Console.Write("Input : ");
a = int.Parse(Console.ReadLine());
Console.WriteLine(a);
Console.ReadKey();

20. 1.
2.
3.
4.
Console.ReadKey()
DOS

21. int a;
float b;
string c;
char d;
Console.Write("Input integer : ");
a = int.Parse(Console.ReadLine());
Console.Write("Input float : ");
b = float.Parse(Console.ReadLine());
Console.Write("Input string: ");
c = Console.ReadLine();
Console.Write("Input character: ");
d = char.Parse(Console.ReadLine());

22. Arithmetic Expressions)
+
*
/
%
++
--
Modulas
1
1

23. Arithmetic Expressions)
=
+=
A = 2;
A +=1
A = A + 1;
-=
A -=2
A = A - 2;
*=
A *=3
A = A * 3;
/=
A /=2
A = A / 2;
%=
A %=2
A = A % 2;

24. Arithmetic Expressions)
==
!=
>
>=
2 == 3
2 != 3
2>3
2 >= 3
<
<=
2<3
2 <= 3
==
2 == 3

25. Arithmetic Expressions)
&&
||
!
^
-
/
/
-
-

26. Arithmetic Expressions)
1
2
3
4
5
6
7
8
9
C#
( ) parenthesis –
++, -*, /, %
+, ==, !=
&&
||
=, +=, -=, /=, %=
++, --

27. Math
Math.Abs(x)
Math.Ceiling(x)
Math.Floor(x)
Math.Log(x)
Math.Log x)
Math.Round(x)
Math.Pow(x,y)
Math.Sqrt(x)
Math.Max(x,y)
Math.Min(x,y)
Math.Sin(x)
Math.Cos(x)
x (|x|)
x
x
x
x
x
x
y()
x( )
x
x
x (x
x (x
y (2
y (2

28. Math
Math.PI
Math.E
e

29. 

string)

30. RAPTOR to C#
Watch Window
int BirthYear, Age;

31. RAPTOR to C#
Input
Console.WriteLine("Your Birth Year");
BirthYear = int.Parse(Console.ReadLine());

32. RAPTOR to C#
Process
Age = 2556-BirthYear;

33. RAPTOR to C#
Output
Console.WriteLine("You are " + Age + " Years old");

34. RAPTOR to C#
int BirthYear, Age;
Console.WriteLine("Your Birth Year");
BirthYear = int.Parse(Console.ReadLine());
Age = 2556-BirthYear;
Console.WriteLine("You are " + Age + " Years old");
Console.ReadKey();

35. 

4
/