An ASP.NET application consists of files, pages, handlers, modules and executable code that can be invoked from a virtual directory. Unlike a Windows application, users do not directly run an ASP.NET application - requests are passed to the ASP.NET worker process. Web pages in the same virtual directory execute in the same application domain. The global.asax file allows handling of application-level events, and configuration is managed through XML configuration files like web.config. ASP.NET uses lazy initialization to create application domains on the first request, and recycles domains periodically to maintain performance.
Topics Covered
==============================
Overview of .NET
Overview of ASP.NET
Creating an ASP.NET Web Form
Adding Event Procedures
Validating User Input
Topics Covered
==============================
Overview of .NET
Overview of ASP.NET
Creating an ASP.NET Web Form
Adding Event Procedures
Validating User Input
“The .NET Framework class library is a library of classes, interfaces, and value types that provide access to system functionality. It is the foundation on which .NET Framework applications, components, and controls are built.”
This PPT explains about the various ways to manage the state of an asp.net web application. This PPT is for complete beginners and intermediate developers who want to know few things about Asp.net State Management. Here I have explained in brief about the various techniques we use to manage the state of our application.
“The .NET Framework class library is a library of classes, interfaces, and value types that provide access to system functionality. It is the foundation on which .NET Framework applications, components, and controls are built.”
This PPT explains about the various ways to manage the state of an asp.net web application. This PPT is for complete beginners and intermediate developers who want to know few things about Asp.net State Management. Here I have explained in brief about the various techniques we use to manage the state of our application.
The complete ASP.NET (IIS) Tutorial with code example in power point slide showSubhas Malik
SP.NET is a server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services. It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language. The ASP.NET SOAP extension framework allows ASP.NET components to process SOAP messages.
Overview of ASP.NET
An ASP.NET Page
Server Controls
User Controls
Validation
Master Pages
Themes & skins
Page Cycle Events
Menu, Navigation & Sitemaps
Some cool new ASP.NET 2 Server Controls
IPsec provides the capability to secure communications across a LAN, across private and public WANs, and across the Internet. Examples of its use include:
Secure branch office connectivity over the Internet
Secure remote access over the Internet
Establishing extranet and intranet connectivity with partners
Enhancing electronic commerce security
Designing and building RESTful APIs isn’t easy. On its surface, it may seem simple – after all, we’re only marshaling JSON back and forth over HTTP right? However, that’s only a small part of the equation. There are many things to keep in mind while building the systems that act as the key to your system.
In this session, we’ll delve into several best practices to keep in mind when designing your RESTful API. We’ll discuss authentication, versioning, controller/model design, and testability. We’ll also explore the do’s and don’t’s of RESTful API management so that you make sure your APIs are simple, consistent, and easy-to-use. Finally, we’ll discuss the importance of documentation and change management. The session will show examples using ASP.NET Web API and C#. However, this session will benefit anyone who is or might be working on a RESTful API.
2.1 Identify the structure of a web application and web archive file, the name of the WebApp deployment descriptor, and the name of the directories where you place the following:
The WebApp deployment descriptor
The WebApp class files
Any auxiliary JAR files
2.2 Match the name with a description of purpose or functionality, for each of the following deployment descriptor elements:
Servlet instance
Servlet name
Servlet class
Initialization parameters
URL to named servlet mapping
CyberLab Training Division :
ASP.NET is a web application framework developed and marketed by Microsoft to allow programmers to build dynamic web sites. It allows you to use a full featured programming language such as C# or VB.NET to build web applications easily.
This tutorial covers all the basic elements of ASP.NET that a beginner would require to get started.
Audience
This tutorial has been prepared for the beginners to help them understand basic ASP.NET programming. After completing this tutorial you will find yourself at a moderate level of expertise in ASP.NET programming from where you can take yourself to next levels.
Prerequisites
Before proceeding with this tutorial, you should have a basic understanding of .NET programming language. As we are going to develop web-based applications using ASP.NET web application framework, it will be good if you have an understanding of other web technologies such as HTML, CSS, AJAX. etc
ASP.NET supports three different development models:
Web Pages, MVC (Model View Controller), and Web Forms.
For More Details.
Visit: http://www.cyberlabzone.com
2.1 Identify the structure of a web application and web archive file, the name of the WebApp deployment descriptor, and the name of the directories where you place the following:
The WebApp deployment descriptor
The WebApp class files
Any auxiliary JAR files
2.2 Match the name with a description of purpose or functionality, for each of the following deployment descriptor elements:
Servlet instance
Servlet name
Servlet class
Initialization parameters
URL to named servlet mapping
1. ASP.NET Application
Anatomy of ASP.NET
application
global.asax Application file
ASP.NET Configuration
.NET Components,
Extending the HTTP Pipeline
2. In traditional desktop programming,
an application is an executable file
with related support files. (EXE & DLL
Files) and other resources such as
databases and configuration files.
ASP.NET application is a combination
of files, pages, handlers, modules, and
executable code that can be invoked
from a virtual directory.
3. Anatomy of an ASP.NET
Application
Unlike a Windows application, the end user
never runs an ASP.NET application directly.
The web server has no concept of separate
applications - it simply passes the request to the
ASP.NET worker process.
Web pages that are hosted in the same virtual
directory (or one of its subdirectories) execute in
the same application domain.
A virtual directory is simply a directory that’s
exposed through a web server.
4. The Application Domain
An application domain is a boundary enforced by the CLR
that ensures that one application can’t influence (or see the
in-memory data) of another.
The following characteristics are a direct result of the
application domain mode.
All the web pages in a single web application share the
same in-memory resources, such as global application
data, per-user session data, and cached data.
All the web pages in a single web application share the
same core configuration settings.
All web applications raise global application events at
various stages.
5. The Application Domain cont..
ASP.NET applications can include all of the following
ingredients.
Web pages (.aspx files)
Web services (.asmx files)
Code-behind files
A configuration file (web.config)
global.asax
Other components (components developed or
third-party components with useful functionality)
6. Application Lifetime
ASP.NET uses a lazy initialization technique
for creating application domains.
Means that the application domain for a web
application is created the first time a request is
received for a page in that application.
An application domain can shut down for a
variety of reasons, including if the web server
itself shuts down.
ASP.NET automatically recycles application
domains when you change the application.
7. Application Lifetime cont..
ASP.NET application may be periodically
recycled when certain thresholds are
reached.
This model is designed to keep an
application healthy
And to detect characteristics that could
indicate a problem has developed or
performance of the application has
degraded.
8. Application Updates
Can update your web application without needing
to restart the web server and without worrying
about harming existing clients.
Transits to a new application domain when
web.config configuration file is modified.
ASP.NET doesn’t actually use the ASP.NET files in
the virtual directory.
Instead, it uses another technique, called
shadow copy, (uses files in
c:WindowsMicrosoft.NETv2.0.50727Temporar
y ASP.NET Files)
ASP.NET’s ability to detect when you change the
original files (relies Windows operating system)
9. Application Directory Structure
Every web application should have a
well-planned directory structure.
Independently from the directory
structure designed, ASP.NET defines a
few directories with special meanings.
11. The global.asax Application File
The global.asax file allows you to write event handlers
that react to global events.
Users cann’t request the global.asax file directly.
Instead, the global.asax file executes its code
automatically in response to certain application events.
global.asax doesn’t contain any HTML or ASP.NET tags.
It contains methods with specific, predefined names.
Every global.asax file defines the methods for a single
class—the application class (class derives from
HttpApplication)
The global.asax file is optional, but a web application can
have only one global.asax file.
12. The global.asax Application File
cont..
global.asax must reside in the root directory of
the application, not in a subdirectory.
An application event handler is just to use the
recognized method name (as opposed to web
controls events).
ASP.NET automatically calls methods in
global.asax when the application event occurs.
ASP.NET creates a pool of application objects
when your application domain is first loaded
and uses one to serve each request.
13. Application Events
Developer can handle two types of
events in the global.asax file:
Events that always occur for every
request. These include request-related
and response related events.
Events that occur only under certain
conditions.
17. Application Events cont..
Avoid use of use the Application_Error()
method to control the appearance of a web
page. (without coding painstaking conditional
logic)
Instead, you would probably configure
custom error pages using the web.config file.
Application_Error() might be extremely
useful for logging an error for future
reference or even send an e-mail about error
to a system administrator
18. ASP.NET Configuration
Configuration in ASP.NETis managed with
XML configuration files.
The ASP.NET configuration files have several
advantages over traditional ASP configuration
They are never locked.
They are easily accessed and replicated.
They are easy to edit and understand
No need of configuration tool
19. The machine.config File
machine.config that resides in the directory
c:Windows
Microsoft.NETFrameworkv2.0.50727Config.
defines supported configuration file sections,
configures the ASP.NET worker process, and registers
providers that can be used for advanced features such as
profiles, membership, and role-based security
<processModel>
This section allows you to configure how the
ASP.NET worker process recycles application domains,
<machineKey>
This section allows you to set the server-specific key
used for encrypting data and creating digital signatures.
20. The web.config File
Every web application inherits the settings
from the machine.config file and the root
web.config file
For example, you might want to set a specific
method for authentication, a type of
debugging, a default language, or custom
error pages.
web.config file in a web application can’t
override all the settings in the machine.config
file
21. The web.config File cont..
Basic skeletal structure of the web.config file
<?xml version="1.0"?>
<configuration>
<appSettings />
<connectionStrings />
<system.web>
<!-- ASP.NET configuration sections go here.
-->
</system.web>
</configuration>
22. Configuration Inheritance
The default machine.config settings are applied first.
The web.config settings from the computer root are
applied next. This web.config file is in
the same Config directory as the machine.config file.
If there is a web.config file in the application root A,
these settings are applied next.
If there is a web.config file in the subdirectory B, these
settings are applied next.
If there is a web.config file in the subdirectory C, these
settings are applied last.
24. The web.config file cont..
<customErrors>
allows you to configure the behavior of
your application in response to various
HTTP
errors.
For Example
<customErrors
defaultRedirect="standarderror.aspx"
mode="RemoteOnly">
<error statusCode="404"
redirect="filenotfound.htm"/>
</customErrors>
25. The web.config file cont..
The following is a list of the modes
supported for the mode attribute:
On: Indicates that custom errors are
enabled. If no defaultRedirect attribute is
supplied, users will see a generic error.
Off: Custom errors are disabled. This
allows full error details to be displayed.
RemoteOnly: Custom errors are shown
only to remote clients while full detailed
errors are displayed to local clients.
30. ASP.NET provides the
WebConfigurationManager class in the
System.Web.Configuration namespace,
which allows you to extract information
from a configuration file at runtime.
31. Reading and Writing Configuration Sections Programmatically
Forexample, if you’re retrieving information from the
<authentication> section, you’ll receive an
AuthenticationSection object, as shown here:
// Get the configuration for the current web application.
Configuration config =
WebConfigurationManager.OpenWebConfiguration("/");
// Search for the <authentication> element inside the
<system.web> element.
AuthenticationSection authSection =
(AuthenticationSection)config.GetSection(@"system.web/
authentication");
32. The Website
Administration Tool (WAT)
Letsyou configure various parts of the
web.config file using a web-page
interface.
To run the WAT to configure the current
web application in Visual Studio, select
Website ➤ ASP.NET Configuration (or
Project ➤ ASP.NET Configuration if
you’re using projectbased development).
Can use the WAT to automate the
web.config changes
33. Extending the HTTP
Pipeline
The pipeline of application events isn’t
limited to requests for .aspx web forms.
One example is if you want to create a
web resource that dynamically renders a
custom graphic.
In this situation, you simply need to
receive a request, check the URL
parameters, and then return raw image
data as a JPEG or GIF file.