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1. Mahmoud Abdallah Mahmoud
Faculty of Engineering
Programming
mahmoud.abd.allah@hotmail.comeg.linkedin.com/in/mahmoudabdallah01

2. Introduction to Programming
1

3. Topics
• What is Programming
• Machine Code VS. Programming Languages
• Why C#
• Visual Studio (IDE)
• .NET Framework
• Windows Desktop (Console, Form) Applications
• DEMO

4. What is Programming ?

5. Programming

6. Every computer program is a set of instructions !

7. Specific, individual, simple, clear, self-contained instructions

8. Sequence is vitally important

9. A lot more of instructions

10. Basic Fundamental Instructions

11. Most Popular Programming Languages

12. Why are there so many languages??

13. Machine Code

14. They are invented languages
to bridge the gap between humans and machines

15. What is Technology ?

16. Why C#

17. IDE

18. .NET Framework

19. Windows Desktop Applications
Windows Form ApplicationsWindows Console Applications

20. Computer Programming

21. DEMO

22. Variables & Operators
2

23. Topics
• Variables
• Data Types
• Arrays
• Operators
• Examples
• DEMOs

24. What are Variables ?

25. Variables
_ Variables are simply containers.
_ We create variables to hold data.
• Name
_ so we can retrieve it when we need to use it, or if we need to put data into the variable. Then we can
access it by its name.
• Data type
_ The type of data that we can put inside a variable and it is also will determine the size of the variable.
Example:
int x;
x = 5;

26. Data Types
• bool
• char
• string
• byte
• short
• int
• long
• float
• double
…..

27. Example 1

28. Example 2

29. Arrays
_ Array: is a variable that can contain other variables, many variables and then
we can reference them by index to pull them out.
Examples:

30. What are Operators ?
+ - * / % ++ --
> < >= <= == !=
! || &&
= += -= *= /= %=

31. Operators
_ Operators are the things we can do to data.
Arithmetic: + - * / % ++ --
Comparison: > < >= <= == !=
Logical: ! || &&
Assignment: = += -= *= /= %=
String Concatenation: +

32. Example 1

33. Example 2

34. Example 3

35. Demo

36. Decision Structures
3

37. Topics
• What are Decisions?
• IF Statement
• Inline Conditionals
• Switch Statement
• Examples
• DEMOs

38. What are Decisions?

39. Decision Structures
_ Gives our application the ability to make decisions.
_ Controlling the flow of how our program executes code.
_ What code executes based on conditions.
• if( ) { }
• switch( ) { }

40. IF Statement
_ For simple things.
Example 1

41. Example 2

42. Example 3

43. Demo

44. Inline Conditionals
Example

45. Switch Statement
_ When we have a lot of conditions, that were things get more complicated.
Example 1

46. Demo

47. Handling Repetitions
4

48. Topics
• What is Looping ?
• While
• Do While
• For
• For Each
• Continue
• Break
• What are Functions ?
• Arguments
• Return

49. What is Looping ?

50. Looping
_ Looping: Executes a block of code until a condition is met.
_ It is our way of running a piece of code multiple times.
• Loop Types:
_ While
_ DoWhile
_ For
_ ForEach

51. While
_ Loop while a condition is true.
_ Checks condition at the beginning of the loop.
• Example 1: • Example 2:

52. Do While
_ Loop while a condition is true.
_ Checks condition at the end of the loop.
Example1

53. Example 2

54. For
_ Loop repeatedly until an expression evaluates to false.
_ Combines control elements in the for declaration.
• Example 1: • Example 2:

55. For Each
_ Loop through each element array or collection.
_ Used to iterate through items.
• Example 1:

56. Example 2

57. Continue
_ It allows us to immediately end an iteration of the loop and go
back to the top of the loop and the next iteration.
• Example:

58. Break
_ If the break keyword is found, we are going to exit the loop
completely.
• Example:

59. What are Functions ?

60. Functions
_ They are very useful for extracting reusable code.
_ We want to isolate some pieces of useful code and sort of store them in a function.
_ They are only useful if we actually call or invoke them.
_ Every function has two things: Declaration & Definition.
• Example:

61. Arguments
_ Arguments are things we can pass into a function and it will do something to them.
_ The function is a factory. We put things into the factory and we get things out of
the factory.
• Example:

62. Return
_ Return allows us to pass something into our function and then it is going to kick
things back to us.
• Example 1:

63. Example 2

64. Demo

65. Basic Controls & Form Layout
5

66. Topics
• Event Driven Programming
• The Label Control
• Stateless Buttons
• Buttons with State
• Textbox Control
• Examples
• DEMOs

67. Event Driven Programming

68. The Label Control
_ Labels basically are static text that will appear on a form.
_ Labels can be placeholders for data from database or a stuff was pulled from
somewhere else or to the user.
Example:

69. Stateless Buttons
_ A button is basically a control on the screen that you click or you press a key onto
and it performs some simple action.
_ It doesn’t keep track of any thing, it is just a stateless button.
_ Clicking a button fires an event called click event meaning that you have clicked this
button.
_ So what we can do is we can double click on this button to create our click event.
• Accept button
• Cancel button

70. Example

71. Buttons with State
_ Buttons that keep track of their current state.
• Radio buttons
• Check boxes
• Grouping:
_ Basically a container we can use to separate items.
_ Allows to have multiple sections of radio buttons.

72. Example 1

73. Demo 1

74. Example 2

75. Demo 2

76. Textbox Control
_ Allows us to write things to the user and read things from the user.
_ It is basically a control that contains text, and the text unlike the label is
editable at runtime by the user.
• Text property
• Multiline textbox
• Password box

77. Example

78. Demo

79. Cont.

80. Design Elements
• ToolTip
• Anchor• Dock
• Tab Order

82. Contact Me
eg.linkedin.com/in/mahmoudabdallah01
mahmoud.abd.allah@hotmail.com