First of all what is Ajax why we go for that one? Is there any specific reasons
to use that in our applications?
AJAX stands for Asynchronous
use existing standards. Ajax is used to transfer data between the server and
client without reloading whole page. In Ajax only necessary data is transferred
back and forth between the client and web server that minimizes the network
utilization and processing on the client. Ajax contains a rich set of controls
that we can use to build highly responsive and interactive Ajax-enabled ASP.NET
Web Forms applications. Gmail is the best example for Ajax enabled site and
especially Google have made Ajax very popular.
Advantages of Ajax
Asynchronous calls—AJAXallows for the ability to make asynchronous calls to a web server.
This allows the client browser to avoid waiting for all data to arrive before
allowing the user to act once more.
Minimal data transfer— by not performing a full postback and sending all form data to
the server, network utilization is minimized and quicker operations occur. In
sites and locations with restricted pipes for data transfer, this can greatly
improve network performance.
Limited processing on the
server— Along with the fact that only
the necessary data is sent to the server, the server is not required to process
all form elements. By sending only the necessary data, there is limited processing
on the server. There is no need to process all form elements, process the
ViewState, send images back to the client, or send a full page back to the
Responsiveness— becauseAJAXapplications are asynchronous on the client, they are perceived to
be very responsive.
Context— with full
postback, users may lose the context of where they are. Users may be at the
bottom of a page, hit the Submit button, and be redirected back to the top of
the page. WithAJAXthere is no
full postback. Clicking the Submit button in an application that uses AJAX will
allow users to maintain their location. The user state is maintained, and the
users are no longer required to scroll down to the location they were at before
How Install Ajax in visual
If we want to useAjaxfeatures
in our application just follow the below steps to download and start using the
Ajax Control Toolkit with Visual Studio:
1.1) First step is to download the latest version of the Ajax
Control Toolkit fromCodePlexwhichever suits to your visual studio. If you are using Visual
Studio 2008 then you should pick the version of the Ajax Control Toolkit for
.NET 3.5. If you are using Visual Studio 2010 then you can use either the .NET
4 or .NET 3.5 versions of the Ajax Control Toolkit.
2) After download the required version of Ajax toolkit open the downloaded file
and extract all the files.
3.3) After that open Visual Studio and create a new ASP.NET Web
Forms project or website. Open Default.aspx page in the project or website.
4.4) Now open Toolbox in visual studio and create a new Toolbox tab
by right-clicking the Toolbox and selectingAdd
Tab.Name the new tabAjax Control Toolkit.
5.5) Right-click beneath the new tab and select the menu optionChoose Items.Click theBrowsebutton and browse to the folder where
you extracted the Ajax Control Toolkit. Pick the AjaxControlToolkit.dll and
click theOKbutton to close theChoose Toolbox Itemsdialog. After that if we check Toolbox
under Ajax Toolkit tab we are able to see the controls like this.
Now our Toolbox loaded with Ajax Controls and check theseAjax
use those controls in our applications.