1. .Net Table of contents Introduction to VS 2005
Database Testing
.Net
Table of contents
Introduction to VS 2005
Application and Page Frameworks
GUI Controls
Validation Server Controls
Working with Master Pages
Themes & Skins
Collections & Lists
Data Binding
Data Management with ADO.Net
Working with XML
Site Navigation
Security
State Management
Caching
Debugging & Error Handling
File I/O & Streams
Configurations
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2. Introduction to VS 2005
Visual Studio 2005 is an IDE that is used to create ASPX pages (Web application)
Creation of web application also creates a set of files.
Web application exists only in the location specified by IIS virtual folder.
In a system, the web root folder is //localhost This is the virtual folder
The physical path for this virtual folder is \\inetpub\wwwroot
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3. What can you find in a VS
We can see these windows when we open the Visual Studio
Property Window – Shows the properties of a control(Page or button or textbox)
Solution Explorer – Shows the files that a opened project has
Output Window – Shows the result of a compilation or execution of a program
Error List – Shows the compilation errors etc.
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4. IIS – Internet Information Services
IIS is a web server that comes along with .Net
We can configure IIS using “inetmgr”
In the Start Menu, choose Run and type inetmgr. We will get a window that lists the websites present in the system.
For creating a virtual directory, right click on the default website and select New -> Virtual Directory.
Give the alias name
Give the physical path
Give the access permissions and click finish.
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5. ASP .Net
Used to create web applications and web services that run under IIS
ASP.NET is a collection of .NET classes that collaborate to process an HTTP request and generate an HTTP response
Helps us in creating Dynamic Web pages
Dynamic web pages – Pages will be generated at the server based on the user’s request and then given back to the client (user)
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6. ASP .Net Framework ASP.NET is a managed server-side framework
For building applications based on HTTP, HTML, XML and SOAP
ASP.NET relies on IIS for an HTTP entry point
ASP.NET supports building HTML-based Web Applications
Based on ASP.NET pages, Web forms and server-side controls
ASP.NET supports building Web Services
Based on Web service classes and WebMethods
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7. Life cycle of a web page Page_Init Page_Load Control_Event Page_Unload
This is called when page is initialized. We can declare some variables which need to be initialized before page is loaded
Page_Load
The server controls are loaded in the page .This event is called every time when page is loaded
Control_Event
This event is fired when control like button are clicked or changed
Page_Unload
This event occurs when a page is Unloaded from memory
Page_Dispose
This event occurs when a page is released from memory
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8. Life cycle of a web application
The Life of web application begins when a user requests for a page through the browser (client)
When IIS receives request from client it calls ASP. NET worker process
The ASP.NET worker process loads the assembly
The executable creates an instance of web form
Generates the HTML page to respond to the request
Posts the response to browser and then it destroys the instance of the web form
Then browser receives the generated HTML
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9. Life cycle of a web application (Contd..)
Client Performs tasks like button click
The page’s data is sent back to server
When server receives this page it creates new instance of web form
Processes the event occurred
Then again send back HTML and destroys the page
When user stops the web application for a period of time session ends
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10. ASP .Net Advantages
Executable portion of a web application are compiled
Enriched tool support
Applications are based on CLR
Common Language Runtime
On the fly updates deployed without restarting server
Better session management
Integration with ADO.NET
Built in features for caching
Create XML Web services
Browser-independent
Language-independent
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11. Application and Page Framework
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12. ASP .Net Applications
Each application is based on IIS virtual directory
Each application is contained within a physical directory
Each application runs in its own isolated AppDomain
Namespace must for this application is System.Web
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13. ASP .Net Pages Code and Design are separated Design file – ASPX file
Contains ASPX or HTML tags
Code file – called as code behind file
Has the programming logic
Programming language can be C#
VB .Net
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14. ASP .Net Pages (Contd..)
ASPX Page has
<asp:Button id=“LookUp“ OnClick=btnSubmit_Click“ />
C# file will have
btnSubmit_Click() { ... }
The code behind page is inherited from System.Web.UI.Page class
The .aspx file containing the user interface is inherited from code behind class
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15. Files in a Web application Project
AssemblyInfo.cs
All the information about assembly including version, company name etc
Default.aspx
The visual description of a Web form.
Default.aspx.cs
The code behind that responds to events on the Web form
Default.aspx.resx
XML resources used by web form
Global.asax
The global events that occur in web applications
Web.config
Configuration contents like authentication mode, error files etc.
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16. GUI Controls
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17. Server Control
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18. Web Controls System.Object System.Web.UI.Control WebControl
Database Testing
Web Controls
System.Object
System.Web.UI.Control
WebControl
ListControl
Table
ListBox
Button
HTML Controls are also similar to web controls. HTML controls are differentiated from Web controls in this way.
Web Controls start with prefix <asp:>.
For example – a table
Web control - <asp:table>
HTML control <table>
CheckBoxList
TextBox
...
...
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19. Postback event
These events cause the web page to be sent back to the server for immediate processing
When page is posted back ,the Page_Init, Page _Load events are handled
The page is submitted back and renders a new version of itself back to the user
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20. Validation Controls
ASP .Net provides 5 validation controls that are used to check the validity of data entered by the user in the server controls on the web page.
Client side validation is also possible through a Jscript library WebUIValidation.js
Required field validator
Regular expression validator
Compare validator
Range validator
Custom validator
Validation summary
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21. Required Field Validator
To check whether a control contains data
Properties:
ControlToValidate
ErrorMessage
Text
Method:
Validate
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22. Regular Expression Validator
To check whether the entered data matches a specific format
Properties
ControlToValidate
ValidationExpression
ErrorMessage
Method
Validate
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23. Compare Validator To compare values entered in two controls
Properties:
ControlToCompare
ControlToValidate
ErrorMessage
ValueToCompare
Method:
Validate
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24. Range Validator
To compare whether the entered value is between two specified values
Properties:
ControlToValidate
ErrorMessage
Type
MaximumValue
MinimumValue
Method:
Validate
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25. Custom Validator
To Check the validity of an entered item using a client-side script or a server-side code, or both
Properties:
ControlToValidate
ErrorMessage
Events:
ServerValidate
Method:
OnServerValidate
Validate
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26. Validation Summary
To Display validation errors in a central location or display a general validation error description
Properties:
HeadText
ShowMessageBox
ShowSummary
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27. User Controls
We can create our own controls in addition to HTML and Web controls
User controls offer you an easy way to partition and reuse common user interface (UI) functionality across your ASP.NET Web applications
User controls are not compiled until run time
You can simply drag and drop them on the page and start using them
To create a user control:
Add a new item ( select user control as a template) and give it a name – Heading.ascx
The following description can be seen in HTML view
Language="c#" AutoEventWireup="false" Codebehind="Heading.ascx.cs“>
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28. Using a User Control
To use a user control, just drag the ascx file from the solution explorer and drop it on the design area of the aspx page
Or give like this in the html view of the aspx page
In the head portion
TagPrefix="uc1" TagName="Heading" src="Heading.ascx"%>
In the body portion
<uc1 id=“user1”/>
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29. Calendar Control
The Calendar Web server control displays a traditional one-month calendar on your Web Forms pages
Few properties:
SelectedDate
SelectedDates
BackColor
Few methods:
AddDays()
AddMonths()
AddYears()
GetMonth()
GetYear()
GetDayOfWeek()
IsLeapYear()
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30. DateTime
DateTime is a static class. Members can be accessed via DateTime.Now and so on.
The DateTime value type represents dates and times with values ranging from 12:00:00 midnight, January 1, 0001 Common Era to 11:59:59 P.M., December 31, 9999 C.E.
Few properties:
Today
Now
Date
Few Methods:
AddDays()
AddMonths()
Compare()
ToLongDateString()
ToShortDateString()
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31. DataGrid Control Full-featured list output
Database Testing
DataGrid Control
Full-featured list output
Default is to show all columns
Can specify a subset of columns to display
Provides templates
Standard
Custom
Provides paging
Provides data updates
DataGrid
The DataGrid provides a spreadsheet-like display of data from a query. Consists of a collection of columns, a header, and a footer. Columns can be auto-generated from the underlying query or you can explicitly declare your own BoundColumns. Extensively customizable appearance properties available
DataGrid Editing
The DataGrid provides a special EditCommandColumn designed for editing data
DataGrid maintains an EditItemIndex property that indicates which row of the grid should be editable (-1 indicates no row is being edited)
The EditCommandColumn renders links for firing three events: EditCommand, UpdateCommand, CancelCommand
DataGridCommandEventArgs is passed into each handler, which contains information on the row being edited. DataGrid also maintains a DataKeyField property which should be set to the primary key. In the event handler for the UpdateCommand, you access the DataKeys collection of the DataGrid to populate the primary key value.
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32. Repeater Control Provides simple output of list of items
Templates provide the visual form
It iterates over the bound data
Display format of data is managed
Does not support paging
Provides templates for separators
Does not provide data updates
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33. Standard templates for Repeater controls
HeaderTemplate
Rendered before all data bound rows
ItemTemplate
Rendered for each row in the data source
AlternatingItemTemplate
Rendered for every other row
SeparatorTemplate
Rendered between each row
FooterTemplate
Rendered after all data bound rows
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34. Binding data
To bind embedded controls to the data source of the container control
DataBinder.Eval() method is used
Syntax
<%#DataBinder.Eval(Container.DataItem,“DataFieldname")%>
Container represents the container for data items
DataFieldname represents the name of data item field
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