.NET news » Ajax

In this tutorial, I will demonstrate how to use MultiHandleSlider extender to choose or display year and month in a range. This control eliminates the need to use four DropDownlist controls to hold the range values and validation control for validating user selection. Then we will use the Column Chart to display number of cars on Sesame Street based on the selected range values.

Validation is one of the most important part of any website. Nowadays, mostly new era websites are having very rich UI, and very much user friedly.User-friendly includes every thing, very good look n feel, excellent user friendly and well placed messages according to the different scenarios.

So here, I am going to discuss all the validators provided by the ASP.NET and for rich UI I'll also discuss in detail the calloutextendor that is part of latest AJAX Tool Kit.

This article provides an overview of JSONs rules and illustrates how it is used in AJAX-enabled web applications. Well also look at using the Microsoft ASP.NET AJAX framework's JavaScriptSerializer class, which facilitates serializing and deserializing JSON-formatted messages on the client in JavaScript or in C# or Visual Basic code on the server.

Starting with ASP.NET 3.5 SP 1, the ScriptManager control in the ASP.NET AJAX Framework includes functionality for creating history points in an AJAX-enabled web page. Adding a history point creates an entry in the browser's history for a particular page state.

This article shows how to add history points using the ScriptManager control. In particular, it shows how to record history points whenever the user pages or sorts a GridView.

Example on how to use AutoCompleteExtender to make a search like Google Suggest.

This is second part in two part series of my article Google Maps User Control for ASP.Net. In the first part I have explained how to use this control in your ASP.Net application. In this part, I am going to explain source code of this user control so that you can modify it for your own use.

This article describes how to implement a web-chat with ASP.NET and Ajax. In the first part I introduce the technologies I used for the application. Then I explain the concept of a chat and in the last part I present the main implementations. The goal of this article is to show the interested reader how to develop a chat without browser-plugins or java-applets, just pure HTML and JavaScript.

Google has provided a very reach Google Maps API to use it in our own application. But we need some short of javascript knowledge in order to use it. I don't know about others, but for me it was a little difficult to use javascript along with google apis in ASP.Net pages, specifically if you want to use server side functions to draw google map dynamically. For example, in my case I wanted to pull latitude longitude information from a SQL Server database and then use them to insert pushpins on google map. If you are familiar with Ajax framework, you know the answer. You will have to call asp.net server side function from javascript and use retrieved data to draw a google map. How simple is that? :). Atleast not for me. So I have decided to write a user control which can take care of javascript part and allows me to concentrate on serverside functions.

Microsoft's ASP.NET AJAX Framework helps page developers design more interactive web pages by streamlining the postback mechanism. In traditional web pages, a full postback involves the browser re-requesting the page, which is then re-rendered. This re-rendered page markup is returned, in its entirety, to the browser for display. Ajax techniques improve the user's experience in two primary ways through the use of partial postbacks: first, a partial postback is asynchronous, meaning that the user can still interact with the page while waiting for the partial postback to complete; second, and more importantly, because a partial page postback updates only a particular region (or regions) of a page, less data needs to be shuttled between the client and the server, resulting in a quicker and smoother experience..

Highrise and other new AJAX enabled tools have this feature that when you type in a search query, it automatically updates the search results below. It's almost like an auto-complete box, but with the full results on the page instead of a dropdown list below the control. Unfortunately, I didn't find anything like this in the Microsoft ASP.NET AJAX Toolkit. So, I decided that this was a good way to finally dive into the AJAX Control Toolkit..