1. Week 1: Introduce ➤ What is the.NET Framework ?  CLR, MSIL,IL,FLC  Garbage collection  Namespace ➤ What C# is and how it relates to the.NET Framework

2. WHAT IS THE.NET FRAMEWORK? Microsoft’s modern software development platform Programs executed by Common Language Runtime (CLR) FLC(Framework class library) Includes a large library of components (classes) which can be used in programs Supports several programming languages, including C#, Visual Basic, C++, J# Windows Programming 1Chapter 1: Introducing C#Slide 2

3. .NET Framework Windows Programming 1 Chapter 1: Introducing C#Slide 3

4. .NET Framework 4.NET 1.1.NET 1.1 (Apr-2003) VS.NET 2003 Default: Server 2003.NET 3.5.NET 3.5 (Nov-2007) VS.NET 2008 Default: Windows 7.NET 3.0.NET 3.0 (Nov-2006) Default: Windows Vista, Server 2008.NET 2.0.NET 2.0 (Nov-2005) VS.NET 2005. NET 1.0 (Feb-2002).NET 4.0.NET 4.0 (2010) VS.NET 2010 Default: Windows 7

5. Writing Applications Using the.NET Framework CLR: Common Language Runtime MSIL or IL: Microsoft Intermediate Language JIT: just-In-Time compiler Assemblies Managed Code Garbage Collection Windows Programming 1Chapter 1: Introducing C#Slide 5

6. .NET Framework -CLR Common Language Runtime Architecture Windows Programming 1Chapter 1: Introducing C#Slide 6

7. Writing Applications Using the.NET Framework 7 MS IL CLR C++ Compiler C# Compiler J#.NET Compiler CT C#.NET CT VB.NET CT C++.NET CT J#.NET VB.NET Compiler 1011010 Programmer

8. Writing Applications Using the.NET Framework Windows Programming 1Chapter 1: Introducing C#Slide 8

9. Assembly Managed Modules Chứa IL code để thực thi Chứa resource, metadata… Portable Executable (PE) Process assembly (EXE) Library assembly (DLL) 9.NET Assembly

10. Managed Code Software that is written using the.NET Framework is called Managed 10 Windows (OS khác) Windows (OS khác) Legacy Software (unmanaged code) Legacy Software (unmanaged code) Common Language Runtime Managed Executable

11. Garbage collection 11 class myClass{ void Method(){ variable v1; variable v2; do{ …. } class myClass{ void Method(){ variable v1; variable v2; do{ …. } B E C A D Managed Heap A và D sẽ bị xoá do ko còn tham chiếu hay truy cập tới

12. Namespaces Namespaces are also used as a means of categorizing items in the.NET Framework Qualified names use period characters (.) between namespace levels Within a namespace, you can define nested namespaces, also using the namespace keyword. Windows Programming 1 Chapter3: Variables and Expressions Slide 12

13. Namespaces Windows Programming 1 Chapter3: Variables and Expressions Slide 13

14. 14 NamespaceDescription System Chứa lớp toán học, chuyển đổi dữ liệu System.IO Các lớp cho thao tác Input và Output System.Net Các lớp liên quan đến network protocol System.Collections Chức các lớp liên quan đến xử lý tập hợp System.Data Các lớp của ADO.NET System.Drawing Các lớp thực thi chức năng GUI System.Threading Các lớp lập trình MultiThread System.Web Các lớp liên quan đến HTTP protocol System.Xml Các lớp liên quan XML Namespace

15. Đặc tính lõi: IL, kiểu dữ liệu trong CTS Hỗ trợ Win GUI và control WebForm (ASP.NET) Data Access (ADO.NET) Directory Access File System, registry access Networking and web browsing.NET attributes and reflection WinOS access COM interoperability 15 Framework (Base) Class Library

16. Run.NET App from Client Required MS.NET Framework compatible MS.NET Framework 2.0, 3.5 Install.NET 3.5 Full Redistributable package (dotnetfx35.exe, 197MB) Windows Vista comes with.NET Framework 3.0 Windows 7 comes with.NET Framework 4.0 16.NE T App.NE T App.NET App.NET App.NET App.NET App

17. 17

18. WHAT IS C#? Applications You Can Write with C# Windows applications Web applications Web services: Windows Programming 1Chapter 1: Introducing C#Slide 18

19. Visual Studio Powerful, professional Integrated Development Environment (IDE) Integrates compilers, debugger and many other useful tools for development Can work with many different types of project, including: Console (text-based) applications Windows (GUI) applications Web applications (ASP.NET) Class libraries Windows Programming 1Chapter 1: Introducing C#Slide 19

20. Visual Studio Solution explorer Toolbox windows Visual designer Properties windows Windows Programming 1Chapter 1: Introducing C#Slide 20

21. Visual Studio projects A project contains source code files, settings and resources for an application May contain references to class libraries May contain data used by application Building a project: Compiles source files Copies non-source files to output folder Creates an assembly in output folder Building a solution builds all its projects Windows Programming 1Chapter 1: Introducing C#Slide 21

22. Project details References – class libraries used by this application References – class libraries used by this application Solution folder contents Project folder contents Solution file (.sln) and project file (.csproj) are created by VS and contain solution/project configuration information Windows Programming 1Chapter 1: Introducing C#Slide 22

23. Creating a Visual Studio project Demo Windows Programming 1Chapter 1: Introducing C#Slide 23

24. Week 1: THE C# LANGUAGE Chapter 2: Writing a C# Program  A basic working knowledge of Visual Studio 2010 and Visual C# 2010 Express Edition  How to write a simple console application  How to write a Windows Forms application

25. Visual C# 2010 Ultimate Windows Programming 1 Chapter 2: Writing a C# Program Slide 25

26. CONSOLE APPLICATIONS Windows Programming 1 Chapter 2: Writing a C# Program Slide 26

27. WINDOWS FORMS APPLICATIONS MO_BAI1 Windows Programming 1 Chapter 2: Writing a C# Program Slide 27

28. The Solution Explorer Windows Programming 1 Chapter 1: Introducing C#Slide 28

29. The Properties Window Windows Programming 1 Chapter 1: Introducing C#Slide 29

30. Code view Windows Programming 1 Chapter 1: Introducing C#Slide 30

31. The Error List Window Windows Programming 1 Chapter 1: Introducing C#Slide 31

32. SUMMARY Windows Programming 1 Chapter 2: Writing a C# Program Slide 32

33. Week 1: THE C# LANGUAGE Chapter 3:Variables and Expressions Basic C# syntax Variables and how to use them Expressions and how to use them

34. BASIC C# SYNTAX The look and feel of C# code is similar to that of C++ and Java. C# compilers ignore additional spacing in code, whether it results from spaces, carriage returns, or tab characters (collectively known as whitespace characters). Statements C# is a block-structured language, meaning statements are part of a block of code. Windows Programming 1 Chapter3: Variables and Expressions Slide 34

35. block These blocks, which are delimited with curly brackets ({ and }), may contain any number of statements, or none at all Windows Programming 1 Chapter3: Variables and Expressions Slide 35

36. comments Comments can be created using //… Multi-lines comments use /* … */ You can use single-line comments that start with three / symbols instead of two /// A special comment Comments are ignored by the compiler Used only for human readers Windows Programming 1 Chapter3: Variables and Expressions Slide 36

37. The code outlining You can do this with the #region and #endregion keywords, which define the start and end of a region of code that can be expanded and collapsed. Windows Programming 1 Chapter3: Variables and Expressions Slide 37

38. VARIABLES C# syntax for declaring variables merely specifies the type and variable name: ; int intNumberOfStudents; Declaration includes Name, follow Naming Convention Rules Data Type Required Value for Constants Optional Initial Value for Variables Windows Programming 1 Chapter3: Variables and Expressions Slide 38

39. Simple Types Windows Programming 1 Chapter3: Variables and Expressions Slide 39

40. Simple Types Windows Programming 1 Chapter3: Variables and Expressions Slide 40

41. Simple Types Windows Programming 1 Chapter3: Variables and Expressions Slide 41

42. Using Simple Type Variables Mo_b3 Windows Programming 1 Chapter3: Variables and Expressions Slide 42

43. Variable Naming The first character of a variable name must be either a letter, an underscore character ( _ ), or the at symbol (@). Subsequent characters may be letters, underscore characters, or numbers. Windows Programming 1 Chapter3: Variables and Expressions Slide 43

44. String Literals Windows Programming 1 Chapter3: Variables and Expressions Slide 44

45. String Literals This means that the following strings are equivalent: "Karli \’s string." "Karli \u0027 s string.“ @ "A short list: item 1 item 2“ "C:\\Temp\\MyDir\\MyFile.doc“ @ "C:\Temp\MyDir\MyFile.doc" Windows Programming 1 Chapter3: Variables and Expressions Slide 45

46. EXPRESSIONS Operators can be roughly classified into three categories: ➤ Unary— Act on single operands ➤ Binary—Act on two operands ➤ Ternary—Act on three operands Windows Programming 1 Chapter3: Variables and Expressions Slide 46

47. Mathematical Operators Windows Programming 1 Chapter3: Variables and Expressions Slide 47

48. Windows Programming 1 Chapter3: Variables and Expressions Slide 48

49. Manipulating Variables with Mathematical Operators Windows Programming 1 Chapter3: Variables and Expressions Slide 49

50. Assignment Operators Windows Programming 1 Chapter3: Variables and Expressions Slide 50

51. Operator Precedence Windows Programming 1 Chapter3: Variables and Expressions Slide 51

52. SUMMARY Windows Programming 1 Chapter 3: Variables and Expressions Slide 52