Chapter Introduction to the Visual Studio 2005 INTRODUCTION Visual Studio.NET  Included in Visual Studio.NET  Visual Basic (VB.Net, VB 8.0)  C++  C# (C Sharp)  J++ (J Sharp)  NET Framework © Slide Introduction  Visual Studio NET  Framework  Microsoft’s Integrated Development Environment (IDE) © Slide The NET Framewor k  The Common Language Runtime (CLR) is another central part of the NET Frameworkit executes NET programs  The NET Framework Class Library (FCL) can be used by any NET language (biet Net) © Slide The Net Framewor k  Understanding the NET Framework Architecture © Slide Understanding the Common Language Runtime  Common Language Runtime Architecture © Slide Progr amming Languages  Procedural  Program specifies exact sequence  Event Driven  Object Oriented Programming (C#.NET)  User controls sequence  Click event  Double Click event  Change event © Slide Object Model  Object ==> Like a Noun in English  Form and Controls on forms (Button, Text boxes…)  Property ==> Like Adjective,they describe object  Text, Name, BackColor, Font and Size  Method ==> Like Verb, They are actions that objects exhibit  Close();  Hide();  Event Like Verb  Click  doubleClick, selectedchange © Slide INTRODUCTION C#.NET  C#.NET supports programming projects that run in both Windows desktop and Internet environments We will focus on the Windows desktop  Both of these environments are based on what is termed a graphical user interface or GUI for short © Slide Visual Studio NET Integ rated Development Environment (IDE) Over v iew Fig 2.1 Start Page in Visual Studio NET © Slide 10 Simple Progr am: Displaying Text and an Image  Insert an image  The Image property sets the image that appears (Fig 2.26)  Pictures should be of type gif, jpeg, or png (Fig 2.27)  The picture box is resizable to fit the entire image (Fig 2.28)  Save the project  In the Solution Explorer select File > Save  Using Save All will save the source code and the project  Run the project (Fig 2.29)  In run mode several IDE features are disabled  Click Build Solution in the Build menu to compile the solution  Click Debug in the Start menu or press the F5 key © Slide 25 Simple Progr am: Displaying Text and an Image  Terminating the program  Click the close button (x in the top right corner)  Or click the End button in the toolbar © Slide 26 Introduction to C# Programming  Console applications  No visual components  Only text output  Two types  MS-DOS prompt – Used in Windows 95/98/ME  Command prompt – Used in windows 2000/NT/XP  Windows applications  Forms with several output types  Contain Graphical User Interfaces (GUIs) © Slide 27 Simple Progr am: Printing a line of text  Comments  Comments can be created using //…  Multi-lines comments use /* … */  Comments are ignored by the compiler  Used only for human readers  Namespaces  Groups related C# features into a categories  Allows the easy reuse of code  Many namespaces are found in the NET framework library  Must be referenced in order to be used  White Space  Includes spaces, newline characters and tabs © Slide 28 Simple Progr am: Printing a line of text  Keywords  Words that cannot be used as variable or class names or any other capacity  Have a specific unchangeable function within the language  Example: class  All keywords are lowercase  Classes  Class names can only be one word long (i.e no white space in class name )  Class names are capitalized, with each additional English word capitalized as well (e.g., MyFirstProgram )  Each class name is an identifier  Can contain letters, digits, and underscores (_)  Cannot start with digits  Can start with the at symbol (@) © Slide 29 Simple Progr am: Printing a line of text  Class bodies start with a left brace ({)  Class bodies end with a right brace (})  Methods  Building blocks of programs  The Main method  Each console or windows application must have exactly one  All programs start by executing the Main method  Braces are used to start ({) and end (}) a method  Statements  Anything in quotes (“) is considered a string  Every statement must end in a semicolon (;) © Slide 30 Simple Progr am: Printing a line of text  Graphical User Interface  GUIs are used to make it easier to get data from the user as well as display data to the user  Message boxes  Within the System.Windows.Forms namespace  Used to prompt or display information to the user © Slide 31 Ex :Welcome1.cs // Fig 3.1: Welcome1.cs // A first program in C# using System; class Welcome1 { static void Main( string[] args ) { 10 11 12 } Console.WriteLine( "Welcome to C# Programming!" ); } Welcome to C# Programming! Simple Progr am: Printing a Line of Text Fig 3.3 Execution of the Welcome1 program © Slide 33 Ex2: Welcome2.cs // Fig 3.4: Welcome2.cs // Printing a line with multiple statements using System; class Welcome2 { static void Main( string[] args ) { Console.Write( "Welcome to " ); Console.WriteLine( "C# Programming!" ); } } Welcome to C# Programming! Ex 3: Welcome3.cs // Fig 3.5: Welcome3.cs // Printing multiple lines with a single statement using System; class Welcome3 Welcome to C# Programming! { static void Main( string[] args ) { 10 11 12 } Console.WriteLine( "Welcome\nto\nC#\nProgramming!" ); } Simple Progr am: Printing a Line of Text © Slide 36 // Printing multiple lines in a dialog Box using System; using System.Windows.Forms; class Welcome4 { static void Main( string[] args ) { MessageBox.Show( "Welcome\n to \n C# \n programming!" ); } } Another Simple Progr am: Adding Integers  Primitive data types  Data types that are built into C#  String, Int, Double, Char, Long  15 primitive data types (chapter 4)  Each data type name is a C# keyword  Same type variables can be declared on separate lines or on one line  Console.ReadLine()  Used to get a value from the user input  Int32.Parse()  Used to convert a string argument to an integer  Allows math to be preformed once the string is converted © Slide 38 Finish © Slide 39 ... Terminating the program  Click the close button (x in the top right corner)  Or click the End button in the toolbar © Slide 26 Introduction to C# Programming  Console applications  No visual components.. .1 INTRODUCTION Visual Studio. NET  Included in Visual Studio. NET  Visual Basic (VB.Net, VB 8.0)  C++  C# (C Sharp)  J++ (J Sharp)  NET Framework © Slide Introduction  Visual Studio. .. © Slide 31 Ex :Welcome1.cs // Fig 3 .1: Welcome1.cs // A first program in C# using System; class Welcome1 { static void Main( string[] args ) { 10 11 12 } Console.WriteLine( "Welcome to C# Programming!"