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The Ajax Papers: Part III
Part III: Why, When, and What Download the easy to read PDF version (includes Trivia not in online version)In parts one and two in this series on Ajax we examined in detail how Ajax communication works and how JavaScript is used to update the page after an Ajax callback. We looked at some of the specific ways RadAjax and ASP.NET AJAX handle Ajax operations and, in short, removed (or at least greatly reduced) the mystery of how these frameworks do their magic. In this installment, we’ll move past the “how” and “where” of Ajax and start to look at the “why”, “when”, and “what” (I don’t think we have... -
Release
New online resources for the past two weeks
Below is a summary of the new online resources available for our ASP.NET controls:RadGrid Code library entries: Calculating group totals:http://www.telerik.com/community/code-library/submission/b311D-tktck.aspx Calculated column with total in the footer:http://www.telerik.com/community/code-library/submission/b311D-tgcde.aspx Update/Insert/Delete with stored procedures and SqlDataSource control:http://www.telerik.com/community/code-library/submission/b311D-tgcgc.aspx Update/Insert/Delete in DataSourcePersistenceMode = NoPersistencehttp://www.telerik.com/community/code-library/submission/b311D-tgtkd.aspx Help topics: Customize the insert form display position with paging enabled:http://www.telerik.com/help/aspnet/grid/?grdCustomizeInsertFormPosition.html Localization/Accessibility -> How-to -> Navigate through single grid at a time with keyboard navigation enabled (not uploaded yet) -
Web ASP.NET AJAX
Security: JSON Hijacking and the telerik web controls
I have been too slow to get to this! The security experts at Fortify Software have recently discovered a new Web 2.0-specific security vulnerability that may affect some sites passing JSON-encoded data to the client, and I got some nudges from both coworkers and customers to investigate this deeper. So, what is this vulnerability all about? In short, you have to be extra careful when using HTTP GET requests to stream JSON-encoded data to the client. You may be thinking that you are using ASP.NET's authentication mechanism and you are conveniently hidden behind the session and forms authentication cookie, but that may not be... -
Release
converter.telerik.com - now open
Howdy geeks! No, it's not Christmas time, but we have a nice present wrapped up for you :) For the ones out there like me who enjoy all sorts of gizmos – check it out: http://converter.telerik.com/ the cool new service offered from the telerik labs free of charge for everyone. I was wondering how to best describe the idea, but Todd seems to do a better job: Code Converter is a free and simple VB to C# and C# to VB code converter. While there are several other good code converters available, none are perfect. Some are buried in busy websites. Some are awkward... -
Web ASP.NET AJAX
Ajax Manager WebCast Full
For those of you who are not subscribed to my Telerik Watch blog, I want to bring your attention to some important news. The Ajax Manager WebCast that I'll be doing with Microsoft this week is already full! Clearly everyone is eager to see the latest from Telerik and how we're embracing ASP.NET AJAX and I want to thank everyone for making this WebCast an early success. The good news for those of you who did not register in time is that the entire event will be available on demand sometime next week. For full details on accessing the on... -
Web ASP.NET AJAX
Debugging ASP.NET 2.0 Web Resources: Decrypting the URL and Getting the Resource Name
Today I had another trivial problem that was unbelievably hard to debug just because I could not tell that an error caused by a web resource was caused by exactly that resource. I was dealing with a forgotten [WebResource] attribute that did not have a matching resource built in the assembly and both generated a server side exception and gave browsers a 404 HTTP error. I wanted to decrypt the query string data that was being passed to WebResource.axd and extract the resource and assembly name from it. MSDN told me that what I needed was the "d" query string parameter, as it contained the encrypted assembly and resource name. The... -
Web
The Ajax Papers: Part II
The Ajax PapersPart II: Updating the PageDownload formatted PDF version for easy readingIn part one of this series on Ajax we looked at Ajax basics. What it is. How it works. Where it executes. We learned that Ajax communication (in its most basic form) only takes a few lines of JavaScript to work. If Ajax is so easy, what’s all the fuss about Ajax being so hard? Even though Ajax in its purest sense just defines a method for communicating asynchronously with the server, it is relatively useless unless you do something with the information returned from the server. That “something” usually means that you need to... -
Release
New online resources for the past two weeks
Below is a summary of the new online resources available for our ASP.NET controls: RadGrid Code library entries: Passing item-related data from the server to the client and vice versa: http://www.telerik.com/community/code-library/submission/b311D-tebbc.aspx Show/Edit boolean values using "Y" and "N": http://www.telerik.com/community/code-library/submission/b311D-tkagh.aspx -
Release
New online resources for the past two weeks
Below is a summary of the new online resources available for our ASP.NET controls:radGridCode library entries: Client-side Row Selection Persisted with Sorting and Paging:http://www.telerik.com/community/code-library/submission/b311D-khchg.aspx Saving radGrid scroll position when leaving pagehttp://www.telerik.com/community/code-library/submission/b311D-tdcmd.aspx Printing grid headers on every pagehttp://www.telerik.com/community/code-library/submission/b311D-tcect.aspx -
Web
The Ajax Papers: Part I
The Ajax Papers Part I: The Intro and the Basics Download formatted PDF version for easy readingAjax. We’ve all heard of it and most of us have already started to use it. Many of us (“us” being ASP.NET developers) probably decided to use Ajax because Telerik’s radAjax component made it very easy to add Ajax to our existing projects. We figured what the heck? Telerik makes it easy to add Ajax to my site and the boss will love to see the Ajax buzz word in my list of accomplishments. As radAjax developers, though, we often take for granted what’s actually happening under...
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