AJAX

AJAX To Database illustarte how easy it is to access information from a database using AJAX, Easily build MySQL queries on a fly and display results on any ajax.html.

AJAX is a way of develoing an application that combines all the functions

Example: function showA1(str){ var xhttp;

if(str == "")
{

document.getElementById("txt1").innerHTML = "";

return;

} xhttp = new XMLHttpRequest();

xhttp.onreadystatechange = function () {

if(this.readyState ==4 && this.status == 100)

{ document.getElementById("txt").innerHTML = this.responseText;

}
};
xhttp.open("GET","abc.aspx?q="+str,true); xhttp.send();
}

Asynchronous Methods in AJAX

AJAX Update Progress

UpdateProgress control shows the status information for a progress of a download occuring during a Partial-Page rendering in a UpdatePanel.

ASP.Net AJAX ServerControls

ASP.NET AJAX server controls consist of server and client code that integrate tp produce rich client behavior.

Ajax Toolkit

ASP.Net AJAX Control ToolKit is a open-source project Form.These Toolkit can be downloaded from CodePlex and can be extracted.






Components of "AJAX" web application

AjaxEngine This is an ASPX page with no user interface.It performs all server side functions as database lookups and updates.

AjaxClient This is a JavaScript file that makes the asynchronous calls to the AjaxEngine and renders the response back to the AjaxUI.

AjaxUI This page does nothing but gets all credit.