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Today's websites commonly exchange information between the browser and the web server using Ajax techniques. In a nutshell, the browser executes JavaScript code typically in response to the page loading or some user action. This JavaScript makes an asynchronous HTTP request to the server. The server processes this request and, perhaps, returns data that the browser can then seamlessly integrate into the web page. Typically, the information exchanged between the browser and server is serialized into JSON, an open, text-based serialization format that is both human-readable and platform independent.

Adding such targeted, lightweight Ajax capabilities to your ASP.NET website requires two steps: first, you must create some mechanism on the server that accepts requests from client-side script and returns a JSON payload in response; second, you need to write JavaScript in your ASP.NET page to make an HTTP request to this service you created and to work with the returned results. This article series examines a variety of techniques for implementing such scenarios. In Part 1 we used an ASP.NET page and the JavaScriptSerializer class to create a server-side service. This service was called from the browser using the free, open-source jQuery JavaScript library.

This article continues our examination of techniques for implementing lightweight Ajax scenarios in an ASP.NET website. Specifically, it examines how to create ASP.NET Ajax Web Services on the server-side and how to use both the ASP.NET Ajax Library and jQuery to consume them from the client-side.

Unlike debugging server-side code, examining the HTTP traffic sent between the client and the server is typically done on the client - namely, from the browser rather than from within Visual Studio. Fiddler is a free, excellent tool for debugging HTTP traffic. This article provides an overview of Fiddler and shows how to use Fiddler to assist with debugging.

This project intends to extend the default Asp.Net role based Security to include Permission Based / Page Level Authorization Layer. Works with both ASP.Net and Asp.Net MVC. Permission rules to Allow/Deny access to website resources (like "Folder/File.aspx" or "Controller/Action" ) are stored in DB

This is part 2 to the article Simplified MVVM: Silverlight 4 Video Player. That article focused on the MVVM (Model-View-ViewModel) pattern, and how it supports Designer / Developer collaboration and workflow. However, when others tried to use that project for a real website, they found they needed the full set of controls that a video player normally provides. I decided to use this as an opportunity to dig deeper into "Simplified" MVVM and demonstrate how easy it truly is, when using Microsoft Expression Blend 4 (or higher).

This article looks at how to use the Google Chart API to create charts. The Google Chart API is a free service from Google that enables web developers to generate chart images on the fly by creating an <img> element with a src attribute that points to a URL that includes the chart data, labels, and other information in the querystring. Read on to learn how to use the Google Chart API in your ASP.NET website!

ASP.NET version 1.x did not include any built-in logging and notification system and therefore required a little bit of code or configuration effort from the developer. ASP.NET 2.0, however, provides built-in Health Monitoring facilities that make it a snap to configure a website to record events to the event log, a database, via WMI, in an email, or to the ASP.NET page tracing system. Moreover, the Health Monitoring system was created using the provider design pattern, making it possible to implement our own logging logic.

This is the start of a series that explores the ASP.NET 2.0 Health Monitoring system. In this article we will examine the basics of Health Monitoring and see how to setup Health Monitoring to log events to a SQL Server database..

In this article we start with a look at the T-SQL commands for performing asymmetric encryption and decryption. Next, we discuss using digital signatures as a means for ensuring the integrity of the encrypted data. This article concludes with an ASP.NET 2.0 website example that ties together the lessons learned throughout this article series. Specifically, the database used by this ASP.NET application stores customer information with the customer's credit card information encrypted. An ASP.NET page provides a means to view the sensitive information in plaintext as well as a means to add new customers to the database with the credit card information properly encrypted.

UltimateSpell is an ASP.NET control to spell check editable content on your web pages. * AJAX Enabled - Spell check very long text without compromising on speed. Sends small blocks of text to server using AJAX techniques without refreshing the page. * Auto Find - Drag-and-drop the control onto your page, and you're done. It automatically finds and spell checks all editable controls. * Cache Dictionary - Automatically caches dictionaries for fast interaction and data retrieval. * Lots of Dictionaries - Currently 34 dictionaries available on our website. If not enough you can use your own dictionary as well. * Show Options - Change the spelling options either on the server-side, or on the client-side inside the spell check dialog box at runtime.

The newest member of the jQuery family of projects is jQuery Mobile. A good way to describe what jQuery Mobile is to think of it as jQuery UI for mobile devices. If you have wanted to write mobile-optimized UIs over your applications, jQuery Mobile is a library that you will want to add to your bag of tricks. Like jQuery UI, jQuery Mobile is themeable. This article makes two assumptions. First, you are familiar with jQuery and second, you are familiar with jQuery UI. If you are not familiar with jQuery or jQuery UI, I suggest that you take a moment to familiarize yourself with those libraries. Fortunately, the websites for these projects (jquery.com and jQueryUI.com respectively) are replete with comprehensive documentation and code examples. jQuery Mobile is no different. The official website for jQuery Mobile is jquerymobile.com. As of this writing, jQuery Mobile 1.0 Beta 3 has been released. Its beta status notwithstanding, jQuery Mobile is ready for primetime and has been incorporated into many applications already. In this article, I will cover what you need to get started with some simple examples that illustrate how to create one page and multi-page apps. In addition, I’ll touch upon the theming capabilities in jQuery Mobile.

Today's websites commonly exchange information between the browser and the web server using Ajax techniques - the browser executes JavaScript code typically in response to the page loading or some user action. This JavaScript makes an asynchronous HTTP request to the server. which then processes the request and, perhaps, returns data that the browser can then seamlessly integrate into the web page. Two earlier articles - Accessing JSON Data From an ASP.NET Page Using jQuery and Using Ajax Web Services, Script References, and jQuery, looked at using both jQuery and the ASP.NET Ajax Library on the browser to initiate an Ajax request and both ASP.NET pages and Ajax Web Services as the entities on the web server responsible for servicing such Ajax requests.

This article continues our examination of techniques for implementing lightweight Ajax scenarios in an ASP.NET website. Specifically, it examines how to use the Windows Communication Foundation, or WCF, to serve data from the web server and how to use both the ASP.NET Ajax Library and jQuery to consume such services from the client-side.