Table Of Contents VISUAL BAISC 2005 FOR BEGINNERS

Transcription

1 Table Of Contents SECTION I: REVOLUTION AND DESIGN ENVIRONMENT OF VISUAL BASIC INTRODUCTION TO MICROSOFT VISUAL STUDIO HISTORY OF MICROSOFT VISUAL STUDIO... 1 Visual Studio Visual Studio Visual Studio.NET (2002)... 2 Visual Studio.NET Visual Studio Future Versions... 4 INTRODUCTION TO.NET... 4 Origin Of.NET... 5 Goals Based On Which.NET Emerged... 6 Highly Distributed Applications... 6 Software Development Simplified... 7 Better User Interface Over The Web... 7 Deployment Simplified... 7 A Variety Of Languages Supported... 7 An Extendable Platform For The Future... 7 Future Portability of Compiled Applications... 8 Structure Of.NET... 8 Common Language Runtime... 9.NET Framework Base Classes... 9 ASP.NET Windows Forms PROGRAMMING LANGUAGES OF VISUAL STUDIO Visual Basic Visual C Visual C# Visual J# NET Framework Web Forms Windows Forms Web Services XML Support INTRODUCTION TO VISUAL BASIC HISTORY OF VISUAL BASIC Versions Of Visual Basic Versions Of Visual Basic.NET FEATURES OF VISUAL BASIC VISUAL BASIC 6.0 V/S VISUAL BASIC Data Types Changes VISUAL BAISC 2005 FOR BEGINNERS

2 Page viii Variable Declarations Changes...20 Improved Type Safety...20 Arrays...20 Array Bounds...20 Fixed Arrays...21 ReDim Statement...21 Arithmetic Operators...21 Fixed Length Strings...21 Boolean Operators...21 Structures and User-Defined Types...22 New And Nothing Keywords...22 No Support For Set Statement...22 Changes In Procedure Syntax...23 C++ Like Procedure Calls...23 ByVal Is Default Argument Type...23 Optional Keyword...23 Return Statement...24 Changes In Control Flow Statements...24 ADVANTAGES OF VISUAL BASIC Build Robust Windows-Based Applications...24 Resolve Deployment And Versioning Issues Seamlessly...24 Create Web Applications With A Zero Learning Curve...25 SYSTEM REQUIREMENTS FOR VISUAL BASIC DIFFERENT EDITIONS OF VISUAL BASIC THE OUTLOOK OF VISUAL BASIC INTRODUCTION TO VISUAL BASIC IDE...28 Getting Started...28 UNDERSTANDING THE VISUAL STUDIO IDE...31 Start Page...31 The Menu Bar...32 The File Menu...32 The Edit Menu...34 The View Menu...36 The Tools Menu...47 The Window Menu...49 Working With Windows...49 Docking Windows...49 Tabbing Windows...50 Floating Windows...51 Hiding Window...51 Auto Hiding Window...51 Additional (Dynamic) Menu Bar...52 The Project Menu...52 The Build Menu...57 The Debug Menu...57 The Class Diagram Menu...60 The Data Menu...62 TABLE OF CONTENTS

3 Page ix 4. GETTING STARTED WITH THE IDE START PAGE OF IDE SOLUTIONS AND PROJECTS What Is A Solution? What Is A Project? What Are Items? CREATING SOLUTIONS AND PROJECTS Creating Solutions Creating A Project Working With Solution Explorer Working With The Properties Window Working With ToolBox Naming Conventions Designing The Form Short Description Of ToolBar SAVING THE PROJECT OPENING THE EXISTING PROJECT Using Start Page Using Menu Item Using The Toolbar USING THE CODE EDITOR Adding Event Handlers / Methods RUNNING THE PROJECT SECTION II: VISUAL BASIC 2005 BASICS 5. VARIABLES, ARRAYS AND COLLECTIONS Code Statements In Visual Basic Comments VARIABLES Data Types Boolean Data Type Byte Data Type Char Data Type DateTime Data Type Decimal Data Type Double Data Type Integer Data Type Long Data Type Object Data Type Short Data Type Single Data Type String Data Type User Defined Data Type Memory Consumed By Data Types VISUAL BASIC 2005 FOR BEGINNERS

4 Page x Declaring A Variable Initializing Variables New Keyword Nothing Keyword Null Keyword Implicit And Explicit Declarations VARIABLE SCOPE Block Scope Procedure Scope Module Scope Namespace Scope ACCESSIBILITY OF A VARIABLE Public Private Friend Protected Protected Friend STRUCTURES CONVERSION BETWEEN VALUES OF DIFFERENT DATA TYPES Widening And Narrowing Conversions Widening Conversions Narrowing Conversions Implicit And Explicit Conversions CType Keyword Value Changes During Conversions Changes During Narrowing And Widening Conversions Changes During Reference Type Conversions Conversions Between Strings And Other Types Conversion Of Numbers To Strings Conversion Of Strings To Numbers Typeless Programming Type Checking Object As The Universal Data Type Changing Data Type Object As An Alternative To A Structure Efficient Use Of Data Types CONSTANTS ARRAYS Declaring Arrays Initializing Array Variables Array Size Limits Multidimensional Arrays Dynamic Arrays Resizing An Array The Erase Statement Array Class Methods GetUpperBound Method TABLE OF CONTENTS

5 Page xi GetLowerBound Method GetLength Method SetValue Method Array.Sort Method Arrays Of Arrays ARRAYLIST Using An ArrayList Adding Items To The ArrayList Removing Items From The ArrayList The Item Property COLLECTIONS Creating Collections Zero-Based and One-Based Collections Arrays V/s Collections Adding Items To A Collection Deleting Items From A Collection Retrieving Items From A Collection Collection Types Hashtable SortedList Queue (First In First Out i.e. FIFO) Stack (Last In First Out i.e. LIFO) Counting Items In A Collection OPERATORS AND CONDITIONAL STATEMENTS OPERATORS Arithmetic Operators The ^ Operator The * Operator The / Operator The \ Operator The Mod Operator The + Operator The Operator Assignment Operators The = Operator The ^= Operator The *= Operator The /= Operator The \= Operator The += Operator The = Operator The <<= Operator The >>= Operator The &= Operator The Bit Shift Operators The << Operator VISUAL BASIC 2005 FOR BEGINNERS

6 Page xii The >> Operator The Comparison Operators The Is Operator The Like Operator The Concatenation Operators The Logical / Bitwise Operators The AND Operator The NOT Operator The OR Operator The XOR Operator The AndAlso Operator The OrElse Operator Operator Precedence CONDITIONAL STATEMENTS Decision Statements The If...Then...Else Statement The Select Case Statement The Try...Catch...Finally Statements Loop Statements The While...End While Statement The Do...Loop Statement The For...Next Statement The For Each...Next Statement The With...End With Statement Nested Conditional Statements PROCEDURES AND FUNCTIONS PROCEDURES Scope Or Accessibility Of Procedures Sub Procedures Sub Main Procedure Event Handling Procedures Arguments Passing Arguments By Value Passing Arguments By Reference Passing Arguments By Position And By Name Passing Arguments By Position Passing Arguments By Name Mixing Arguments By Position And By Name Optional Arguments Parameter Arrays Recursive Sub Procedures Overloading Sub Procedures Functions Properties Arguments Passing Arguments By Value TABLE OF CONTENTS

7 Page xiii Passing Arguments By Reference Passing Arguments By Position And By Name Passing Arguments By Position Passing Arguments By Name Mixing Arguments By Position And By Name Optional Arguments Parameter Arrays Recursive Functions Overloading Functions HANDS ON EXERCISES CONSTRUCTING A USER INTERFACE USING WINDOWS FORMS USER INTERFACE Forms Properties WINDOWS FORMS THE SYSTEM.WINDOWS.FORMS NAMESPACE CREATING A USER INTERFACE USING WINDOWS FORMS Creating The Form Changing The File Name Changing The Form Title Changing The Form Name Saving The Project Adding A TextBox Control Name The Text Box Control Adding The Code Spec Running The Program INTERACTING WITH FORMS Form Controls Common Properties Common Events Controls Button Control CheckBox Control ComboBox Control DateTimePicker Control Label Control LinkLabel Control ListBox Control MaskedTextBox Control NumericUpDown Control PictureBox Control RadioButton Control RichTextBox Control TextBox Control WebBrowser Control GroupBox Control VISUAL BASIC 2005 FOR BEGINNERS

8 Page xiv TabControl Control DataGridView Control Dialog Boxes ColorDialog Control FontDialog Control OpenFileDialog Control SaveFileDialog Control BUILDING AN EDITOR Form Specifications Creating The Form Adding Form Controls As Per Form Specifications Adding Code Spec Running The Program HANDS ON EXERCISES MDI APPLICATIONS AND MENUS MDI APPLICATIONS Creating MDI Application Creating The MDI Parent Window Creating MDI Child Window MENUS Types Of Menus Main Menu The MenuStrip Class Adding MenuStrip Control Adding Menu Items And Sub Menu Items To The MenuStrip Adding A Separator To The Menu Items Adding Access Keys To The Menu Items Adding A Shortcut Key To The Menu Items Adding Images To The Menu Items Items Collection Editor Adding Code To Menu Items Context Menu Adding ContextMenuStrip Control Adding Menu Items And Sub Menu Items To The ContextMenuStrip Adding A Separator To Context Menu Items Adding Access Keys To Context Menu Items Adding A Shortcut Key To Context Menu Items Adding Images To Context Menu Items Items Collection Editor Adding Code To Context Menu Items HANDS ON EXERCISE WORKING WITH DATABASES USING ADO.NET EVOLUTION OF ADO.NET ADO.NET TABLE OF CONTENTS

9 Page xv THE ADO.NET OVERVIEW NET Data Providers GETTING STARTED WITH ADO.NET OBJECTS Namespaces Connections Commands DataReader DataAdapter DataSets CommandBuilder AN EMPLOYEE MASTER FORM DATAGRIDVIEW WITH ADO.NET HANDS ON EXERCISE SOLUTIONS TO HANDS ON EXERCISES SECTION III: OBJECT ORIENTED PROGRAMMING 11. INTRODUCTION TO OBJECT ORIENTED PROGRAMMING Abstraction Encapsulation Inheritance Polymorphism OBJECT Object Composition Working With Objects Declaring And Instantiating An Object Object References De-Referencing Objects CLASS Class Members Access Keywords Creating A Class Properties Read-Only Properties Write-Only Properties Constructor Methods Parameterized Constructors Optional Parameters Method Overloading Inheritance CREATING A CLASS LIBRARY USING VISUAL BASIC Building The Class Library Importing The Build Class VISUAL BASIC 2005 FOR BEGINNERS

10 Page xvi 12. OBJECT ORIENTED PROGRAMMING WITH ACCESS DB CREATING A LIBRARY CREATING A CLIENT Form Specifications SECTION IV: ADVANCED VISUAL BASIC EXCEPTIONS AND ERROR HANDLING TYPES OF ERRORS Syntax Error Runtime Error Trapping Runtime Errors The Try Block The Catch Block The Finally Block Logic Error DEBUGGING IN VISUAL BASIC The Debug Menu The Watch Window The Output Window The Breakpoints Window The Autos Window The Locals Window The Call Stack Window The Immediate Window DEALING WITH FILES AND DIRECTORIES FILE AND DIRECTORY PROCESSING FILES The Stream Class FileStream Class StreamReader And StreamWriter Class BinaryReader And BinaryWriter Class DEVELOPING A NOTEPAD TYPE EDITOR DEALING WITH XML AN INTRODUCTION TO XML WHAT XML DOES XML Can Be Used To Exchange Data XML Can Be Used To Share Data XML Can Be Used To Store Data XML Can Make Data More Useful XML Can Be Used To Create New Languages XML Can Be Used To Reduce Incompatibilities TABLE OF CONTENTS

11 Page xvii USING XML WITH ADO.NET Saving Data To XML File Form Specifications Table Specifications Adding The Code Spec Run The Application Loading Data From XML File Form Specifications (Only Modifications) Adding The Code Spec Run The Application Creating XML Schema Generating A XML Schema Form Specifications (Only Modifications) Run The Application The XML Schema File Validating The XML Document Using XML Schema Run The Application DATA EXPORTER FROM ACCESS DB TABLE TO MYSQL DB TABLE XML NAMESPACES AND CLASSES Retrieving XML Document's Properties Retrieving NodeType Information Writing XML Documents Using XMLDocument To Write XML Documents WINDOWS USER CONTROLS CREATING A DATA BOUND COMBOBOX Creating A Windows Control Library Adding The Code Spec Creating A Client Application CREATING A LOGIN FORM AS A USER CONTROL Form Specifications Creating A Windows Control Library Adding Code Spec Creating A Client Application Using The State Property DECLARING AND RAISING EVENTS HANDS ON EXERCISE INTRODUCTION TO SETUP AND DEPLOYMENT THE SETUP WIZARD DEPLOYING THE PMS APPLICATION SOLUTIONS TO HANDS ON EXERCISES VISUAL BASIC 2005 FOR BEGINNERS

12 Page xviii SECTION V: PROJECT MANAGEMENT SYSTEM 18. PROJECT MANAGEMENT SYSTEM TABLE DEFINITIONS PROJECT SCOPE TABLE DEFINITIONS FOR THE PROJECT MANAGEMENT SYSTEM ProjectMaster ProjectDetails ModuleDetails TaskMaster TypeMaster CheckListMaster TaskTypeMaster AuditMaster ErrorMaster EmployeeMaster EmployeeDetails AddressMaster QualificationMaster EmployeeMuster ProjectMembers CheckListDetails THE ENTITY RELATIONSHIP DIAGRAM PROJECT MANAGEMENT SYSTEM USER MANUAL THE PROJECT MANAGEMENT SYSTEM REQUIREMENTS GETTING STARTED The Entry Point The Data Entry Forms Of The Application Employee Master Purpose Accessed Using Adding A New Employee Modifying An Existing Employee Details Deleting An Existing Employee Canceling Data Entry Project Type Master Purpose Accessed using Adding A New Project Type Modifying An Existing Project Type Deleting An Existing Project Type Canceling Data Entry Check List Master Purpose Accessed using Adding A New Check List TABLE OF CONTENTS

13 Page xix Modifying An Existing Check List Deleting An Existing Check List Canceling Data Entry Task Type Master Purpose Accessed using Adding A New Task Modifying An Existing Task Deleting An Existing Task Canceling Data Entry Project Master Purpose Accessed using Adding A New Project Details Modifying An Existing Project Details Deleting An Existing Project Canceling Data Entry Project Management Purpose Accessed using Defining A Task Submitting Completed Task Submitting A Task For Auditing Returning An Audited Task Completed Tasks Solving Errors Pointed Out Task Available For Re-Auditing Duplicate Task Definition Deleting A Task Deleting A Task Submitted For Auditing Employee Muster Purpose Accessed using Adding A New Muster Record Modifying A Muster Record Deleting A Check List Canceling Data Entry PROJECT MANAGEMENT SYSTEM LIBRARY MODULE getconnection cleargrid fillgrid getnextid clearform formtogrid checkfordelete transfergridtodb VISUAL BASIC 2005 FOR BEGINNERS

14 Page xx dooperation hidecolumns changecolor checkblank checkrelatedtables fillcombo getidfromcombo getnamefromcombo changetextcolor PROJECT MANAGEMENT SYSTEM MASTER DATA ENTRY FORMS CHECK LIST MASTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For Check List Master The Pseudo Flow Of The Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry Submitting Form Data PROJECT TYPE MASTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For Project Type Master The Pseudo Flow Of The Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry Submitting Form Data TASK TYPE MASTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For Task Type Master The Pseudo Flow Of The Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data TABLE OF CONTENTS

15 Page xxi Deleting Form Data Canceling Data Entry Submitting Form Data EMPLOYEE MASTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For EmployeeMaster The Pseudo Flow Of The Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry Submitting Form Data PROJECT MANAGEMENT SYSTEM MASTER/DETAIL DATA ENTRY FORMS EMPLOYEE MUSTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For Employee Muster The Pseudo Flow Of Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry Submitting Form Data PROJECT MASTER Data Entry Form Specifications Data Entry Form Fields Validation Rules Micro-Help For Form Fields Form Layout For Project Master The Pseudo Flow Of Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry Submitting Form Data PROJECT MANAGEMENT Data Entry Form Specifications Data Entry Form Fields Validation Rules VISUAL BASIC 2005 FOR BEGINNERS

16 Page xxii Micro-Help For Form Form Layout For Project Management The Pseudo Flow Of The Form Code Spec When The Form Loads Viewing Form Data Inserting Form Data Updating Form Data Deleting Form Data Canceling Data Entry SECTION VI: APPENDIX A. UPGRADING APPLICATIONS FROM VISUAL BASIC 6.0 TO VISUAL BASIC GENERAL REQUIREMENTS FOR AN UPGRADE THE UPGRADE WIZARD Starting The Upgrade Wizard Fixing The Warnings Running The Application B. WORKING WITH MYSQL USING MYSQL CONNECTOR/NET INTRODUCTION INSTALLING MYSQL Starting The MySQL Command Line Client On Windows CONNECTOR/NET Installing Connector/NET AN EMPLOYEE MASTER FORM Adding A Reference To MySql.Data.dll Importing MySql.Data.MySqlClient Namespace Adding The Code Spec C. CRYSTAL REPORTS INTRODUCTION CREATING AN EMPLOYEE REPORT D. USING A VB USER CONTROL IN OTHER CLR COMPLIANT LANGUAGES EMBEDDING THE LOGIN CONTROL IN C# EMBEDDING THE LOGIN CONTROL IN J# EMBEDDING THE LOGIN CONTROL IN C E. BUILT-IN FUNCTIONS Application Enhancement Functions The MessageBox Or MsgBox Function InputBox Function Console.WriteLine Function String Functions Comparing Strings TABLE OF CONTENTS

17 Page xxiii Reversing A String Searching For A String Extracting Part Of String Uppercase And Lowercase Of A String Trimming Spaces And Characters From A String Finding The Length Of A String Replacing String Padding Strings Concatenating Strings Copying Strings Adding Strings Removing Strings Concatenating An Array Of Strings Splitting Strings Quick Manipulation Of Strings With StringBuilder Appending String Inserting String Replacing String Removing A Substring Finding The Index Of A String Splitting String Comparing Strings Date Functions Getting Current Date / Time Now() Function Today() Function TimeOfDay() Function Performing Date Calculations DateAdd() Function DateDiff() Function DatePart() Function Returning Date DateSerial() Function DateValue() Function MonthName() Function WeekdayName() Function Returning Time TimeSerial() Function TimeValue() Function Setting The Date And Time DateString() Function TimeString() Function Formatting Date and Time Math Functions Absolute Value Square Root Value Rounding Off A Value VISUAL BASIC 2005 FOR BEGINNERS

18 Page xxiv Number Signs Value Logarithmic Value Exponential Value Trigonometric Value Random Value F. REGULAR EXPRESSIONS Regular Expressions Or The Regex Class Character Escapes Character Classes Atomic Zero-Width Assertions Quantifiers Grouping And Alternating Constructs Backreferences Backtracking Regular Expressions Examples Validating Parsing Dates TABLE OF CONTENTS