- •About the Authors
- •Contents at a Glance
- •Contents
- •Introduction
- •Goal of the Book
- •How to Use this Book
- •Introduction to the .NET Framework
- •Common Language Runtime (CLR)
- •Class Library
- •Assembly
- •Versioning
- •Exceptions
- •Threads
- •Delegates
- •Summary
- •Introduction to C#
- •Variables
- •Initializing Variables
- •Variable Modifiers
- •Variable Data Types
- •Types of Variables
- •Variable Scope
- •Types of Data Type Casting
- •Arrays
- •Strings
- •Initializing Strings
- •Working with Strings
- •Statements and Expressions
- •Types of Statements
- •Expressions
- •Summary
- •Classes
- •Declaring Classes
- •Inheritance
- •Constructors
- •Destructors
- •Methods
- •Declaring a Method
- •Calling a Method
- •Passing Parameters to Methods
- •Method Modifiers
- •Overloading a Method
- •Namespaces
- •Declaring Namespaces
- •Aliases
- •Structs
- •Enumerations
- •Interfaces
- •Writing, Compiling, and Executing
- •Writing a C# Program
- •Compiling a C# Program
- •Executing a C# Program
- •Summary
- •Arrays
- •Single-Dimensional Arrays
- •Multidimensional Arrays
- •Methods in Arrays
- •Collections
- •Creating Collections
- •Working with Collections
- •Indexers
- •Boxing and Unboxing
- •Preprocessor Directives
- •Summary
- •Attributes
- •Declaring Attributes
- •Attribute Class
- •Attribute Parameters
- •Default Attributes
- •Properties
- •Declaring Properties
- •Accessors
- •Types of Properties
- •Summary
- •Introduction to Threads
- •Creating Threads
- •Aborting Threads
- •Joining Threads
- •Suspending Threads
- •Making Threads Sleep
- •Thread States
- •Thread Priorities
- •Synchronization
- •Summary
- •Case Study
- •Project Life Cycle
- •Analyzing Requirements
- •High-Level Design
- •Primary and Foreign Keys
- •Referential Integrity
- •Normalization
- •Designing a Database
- •Low-Level Design
- •Construction
- •Integration and Testing
- •User Acceptance Testing
- •Implementation
- •Operations and Maintenance
- •Summary
- •Creating a New Project
- •Console Application
- •Windows Applications
- •Creating a Windows Application for the Customer Maintenance Project
- •Creating an Interface for Form1
- •Creating an Interface for WorkerForm
- •Creating an Interface for CustomerForm
- •Creating an Interface for ReportsForm
- •Creating an Interface for JobDetailsForm
- •Summary
- •Performing Validations
- •Identifying the Validation Mechanism
- •Using the ErrorProvider Control
- •Handling Exceptions
- •Using the try and catch Statements
- •Using the Debug and Trace Classes
- •Using the Debugging Features of Visual Studio .NET
- •Using the Task List
- •Summary
- •Creating Form1
- •Connecting WorkerForm to the Workers Table
- •Connecting CustomerForm to the tblCustomer Table
- •Connecting the JobDetails Form
- •to the tblJobDetails Table
- •Summary
- •Introduction to the Crystal Reports Designer Tool
- •Creating the Reports Form
- •Creating Crystal Reports
- •Creating the Windows Forms Viewer Control
- •Creating the Monthly Worker Report
- •Summary
- •Introduction to Deploying a Windows Application
- •Deployment Projects Available in Visual Studio .NET
- •Deployment Project Editors
- •Summary
- •Case Study
- •Project Life Cycle
- •Analyzing Requirements
- •High-Level Design
- •Low-Level Design
- •Summary
- •Populating the TreeView Control
- •Displaying Employee Codes in the TreeView Control
- •Event Handling
- •Displaying Employee Details in the ListView Control
- •Summary
- •Case Study
- •Project Life Cycle
- •Analyzing Requirements
- •High-Level Design
- •Low-Level Design
- •Summary
- •Adding the Programming Logic to the Application
- •Adding Code to the Form Load() Method
- •Adding Code to the OK Button
- •Adding Code to the Exit Button
- •Summary
- •The Created Event
- •Adding Code to the Created Event
- •Overview of XML
- •The XmlReader Class
- •The XmlWriter Class
- •Displaying Data in an XML Document
- •Displaying an Error Message in the Event Log
- •Displaying Event Entries from Event Viewer
- •Displaying Data from the Summary.xml Document in a Message Box
- •Summary
- •Airline Profile
- •Role of a Business Manager
- •Role of a Network Administrator
- •Role of a Line-of-Business Executive
- •Project Requirements
- •Creation and Deletion of User Accounts
- •Addition of Flight Details
- •Reservations
- •Cancellations
- •Query of Status
- •Confirmation of Tickets
- •Creation of Reports
- •Launch of Frequent Flier Programs
- •Summarizing the Tasks
- •Project Design
- •Database Design
- •Web Forms Design
- •Enabling Security with the Directory Structure
- •Summary
- •Getting Started with ASP.NET
- •Prerequisites for ASP.NET Applications
- •New Features in ASP.NET
- •Types of ASP.NET Applications
- •Exploring ASP.NET Web Applications
- •Introducing Web Forms
- •Web Form Server Controls
- •Configuring ASP.NET Applications
- •Configuring Security for ASP.NET Applications
- •Deploying ASP.NET Applications
- •Creating a Sample ASP.NET Application
- •Creating a New Project
- •Adding Controls to the Project
- •Coding the Application
- •Summary
- •Creating the Database Schema
- •Creating Database Tables
- •Managing Primary Keys and Relationships
- •Viewing the Database Schema
- •Designing Application Forms
- •Standardizing the Interface of the Application
- •Common Forms in the Application
- •Forms for Network Administrators
- •Forms for Business Managers
- •Forms for Line-of-Business Executives
- •Summary
- •The Default.aspx Form
- •The Logoff.aspx Form
- •The ManageUsers.aspx Form
- •The ManageDatabases.aspx Form
- •The ChangePassword.aspx Form
- •Restricting Access to Web Forms
- •The AddFl.aspx Form
- •The RequestID.aspx Form
- •The Reports.aspx Form
- •The FreqFl.aspx Form
- •Coding the Forms for LOB Executives
- •The CreateRes.aspx Form
- •The CancelRes.aspx Form
- •The QueryStat.aspx Form
- •The ConfirmRes.aspx Form
- •Summary
- •Designing the Form
- •The View New Flights Option
- •The View Ticket Status Option
- •The View Flight Status Option
- •The Confirm Reservation Option
- •Testing the Application
- •Summary
- •Locating Errors in Programs
- •Watch Window
- •Locals Window
- •Call Stack Window
- •Autos Window
- •Command Window
- •Testing the Application
- •Summary
- •Managing the Databases
- •Backing Up the SkyShark Airlines Databases
- •Exporting Data from Databases
- •Examining Database Logs
- •Scheduling Database Maintenance Tasks
- •Managing Internet Information Server
- •Configuring IIS Error Pages
- •Managing Web Server Log Files
- •Summary
- •Authentication Mechanisms
- •Securing a Web Site with IIS and ASP.NET
- •Configuring IIS Authentication
- •Configuring Authentication in ASP.NET
- •Securing SQL Server
- •Summary
- •Deployment Scenarios
- •Deployment Editors
- •Creating a Deployment Project
- •Adding the Output of SkySharkDeploy to the Deployment Project
- •Deploying the Project to a Web Server on Another Computer
- •Summary
- •Organization Profile
- •Project Requirements
- •Querying for Information about All Books
- •Querying for Information about Books Based on Criteria
- •Ordering a Book on the Web Site
- •Project Design
- •Database Design
- •Database Schema
- •Web Forms Design
- •Flowcharts for the Web Forms Modules
- •Summary
- •Introduction to ASP.NET Web Services
- •Web Service Architecture
- •Working of a Web Service
- •Technologies Used in Web Services
- •XML in a Web Service
- •WSDL in a Web Service
- •SOAP in a Web Service
- •UDDI in a Web Service
- •Web Services in the .NET Framework
- •The Default Code Generated for a Web Service
- •Testing the SampleWebService Web Service
- •Summary
- •Creating the SearchAll() Web Method
- •Creating the SrchISBN() Web Method
- •Creating the AcceptDetails() Web Method
- •Creating the GenerateOrder() Web Method
- •Testing the Web Service
- •Securing a Web Service
- •Summary
- •Creating the Web Forms for the Bookers Paradise Web Site
- •Adding Code to the Web Forms
- •Summary
- •Case Study
- •Project Life Cycle
- •Analyzing Requirements
- •High-Level Design
- •Low-Level Design
- •Summary
- •Overview of Mobile Applications
- •The Microsoft Mobile Internet Toolkit
- •Overview of WAP
- •The WAP Architecture
- •Overview of WML
- •The Mobile Web Form
- •The Design of the MobileTimeRetriever Application
- •Creating the Interface for the Mobile Web Forms
- •Adding Code to the MobileTimeRetriever Application
- •Summary
- •Creating the Forms Required for the MobileCallStatus Application
- •Creating the frmLogon Form
- •Creating the frmSelectOption Form
- •Creating the frmPending Form
- •Creating the frmUnattended Form
- •Adding Code to the Submit Button in the frmLogon Form
- •Adding Code to the Query Button in the frmSelectOption Form
- •Adding Code to the Mark checked as complete Button in the frmPending Form
- •Adding Code to the Back Button in the frmPending Form
- •Adding Code to the Accept checked call(s) Button in the frmUnattended Form
- •Adding Code to the Back Button in the frmUnattended Form
- •Summary
- •What Is COM?
- •Windows DNA
- •Microsoft Transaction Server (MTS)
- •.NET Interoperability
- •COM Interoperability
- •Messaging
- •Benefits of Message Queues
- •Limitations
- •Key Messaging Terms
- •Summary
- •Pointers
- •Declaring Pointers
- •Types of Code
- •Implementing Pointers
- •Using Pointers with Managed Code
- •Working with Pointers
- •Compiling Unsafe Code
- •Summary
- •Introduction to the Languages of Visual Studio .NET
- •Visual C# .NET
- •Visual Basic .NET
- •Visual C++ .NET
- •Overview of Visual Basic .NET
- •Abstraction
- •Encapsulation
- •Inheritance
- •Polymorphism
- •Components of Visual Basic .NET
- •Variables
- •Constants
- •Operators
- •Arrays
- •Collections
- •Procedures
- •Arguments
- •Functions
- •Adding Code to the Submit Button
- •Adding Code to the Exit Button
- •Summary
- •Introduction to Visual Studio .NET IDE
- •Menu Bar
- •Toolbars
- •Visual Studio .NET IDE Windows
- •Toolbox
- •The Task List Window
- •Managing Windows
- •Customizing Visual Studio .NET IDE
- •The Options Dialog Box
- •The Customize Dialog Box
- •Summary
- •Index
522 Project 4 CREATING AN AIRLINE RESERVATION PORTAL
In the last chapter, you implemented the business logic for running the application and fulfilling the business requirements of SkyShark Airlines. In this chapter, you will design and create the customer transaction portal for the airline, which will help customers to view details of new flights launched by the company,
the status of their tickets, and the status of flights.
Designing the Form
The customer transaction portal is developed to enhance the experience of customers. This portal provides the following four options to a customer:
View New Flights. This option enables customers to view the five most recently launched flights.
View Ticket Status. This option enables customers to view the status of their tickets.
View Flight Status. This option enables customers to view the booking status of a flight.
Confirm Reservation. This option enables customers to confirm their reservation.
To provide these functionalities, you’ll create an ASP.NET Web application.This application will contain only one Web form named wbFrmSkyShark.aspx. This form will display the data corresponding to all four options by using a different set of controls. The design of the wbFrmSkyShark.aspx Web form is displayed in Figure 22-1.
CREATING THE CUSTOMER TRANSACTION PORTAL |
Chapter 22 |
523 |
|
|
|
|
|
FIGURE 22-1 The design of the wbFrmSkyShark.aspx Web form
The preceding figure does not show all the controls present on the Web form. This is because I’ve used only a single Web form for all the options. Controls corresponding to each option are organized in various Panels. Table 22-1 lists all these Panels and other controls present on the Web form.
Table 22-1 Controls in the wbFrmSkyShark.aspx Form
Controls |
Function |
Panel1 |
Contains controls to display all the options |
Panel2 |
Contains controls used for the View Flight Status option |
Panel3 |
Contains controls used for the View Ticket Status option |
Panel4 |
Contains controls used for the Confirm Reservation option |
DataGrid1 |
Displays the new flights |
LblStatus |
To display various messages to the user |
|
|
524 Project 4 CREATING AN AIRLINE RESERVATION PORTAL
Of these panels, Table 22-2 lists all the controls present in Panel1.
Table 22-2 Controls in Panel1
Control Type |
ID |
Properties Changed |
Hyperlink |
Hyperlink1 |
Text=View New Flights |
|
|
NavigateURL = wbFrmSkyShark.aspx?subform=VNF |
Hyperlink |
Hyperlink2 |
Text=View Ticket Status |
|
|
NavigateURL = wbFrmSkyShark.aspx?subform=VTS |
Hyperlink |
Hyperlink3 |
Text=View Flight Status |
|
|
NavigateURL = wbFrmSkyShark.aspx?subform=VFS |
Hyperlink |
Hyperlink4 |
Text=Confirm Reservation |
|
|
NavigateURL = wbFrmSkyShark.aspx?subform=CR |
Hyperlink |
Hyperlink5 |
Text=Home |
|
|
NavigateURL = wbFrmSkyShark.aspx?subform=H |
|
|
|
If you notice, each panel is placed in different locations on the form. However, at run time, only one panel will appear on the screen, depending on the choice of the user. Therefore, you should align each panel at the same location before loading the form. You can do so by changing the Left and Top attributes of the panels in the Load event of the Web form, as given in the code that follows:
private void Page_Load(object sender, System.EventArgs e)
{
Panel2.Style[“left”]=”222px”;
Panel2.Style[“Top”]=”152px”;
Panel3.Style[“left”]=”222px”;
Panel3.Style[“Top”]=”152px”;
Panel4.Style[“left”]=”222px”;
Panel4.Style[“Top”]=”152px”;
}
The wbFrmSkyShark.aspx uses the dtFltDetails table to retrieve the flight details. Before you write the code for the wbFrmSkyShark.aspx form, drag the dtFltDetails table from Server Explorer to the design view of the form. Visual
CREATING THE CUSTOMER TRANSACTION PORTAL |
Chapter 22 |
525 |
|
|
|
|
|
Studio .NET automatically configures SqlDataAdapter and SqlConnection controls for the form. You can read a description of these controls in Chapter 19, “Basics of ASP.NET Web Applications,” in the section “Coding the Application.”
After you add SqlDataAdapter and SqlConnection controls to the form, you can generate a dataset for the form. To generate the dataset, follow these steps:
1.Click anywhere on the form.
2.Click on the Data menu and select Generate Dataset.The Generate Dataset dialog box will appear.
3.In the Generate Dataset dialog box, click on the New option and in the corresponding box, enter dsFlight and click on OK.
4.A new DataSet control is added to your project.
All three data controls are visible in Component Designer in the Design view of the form, as you can see in Figure 22-1. I will now proceed with the implementation of the functionality that was discussed in the beginning of the chapter.
The View New Flights Option
This option displays the details of the five most recent flights launched by the SkyShark Airlines in a DataGrid control. To implement this functionality, create a procedure named Display_NewFlights(). The code for this procedure is given as follows.
public void Display_NewFlights()
{
string SelStr;
SelStr = “Select top 5 fltno, origin, destination, deptime, fareexec, farebn, launchdate from dtfltdetails order by launchdate”;
SqlCommand SelComm;
SelComm = new SqlCommand(SelStr, sqlConnection1); sqlDataAdapter1.SelectCommand = SelComm; sqlDataAdapter1.Fill(dsFlight1,”Details”);
DataView source= new DataView(dsFlight1.Tables[“Details”]);
DataGrid1.DataSource=source;
DataGrid1.DataBind();
DataGrid1.Visible = true;
}