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Web ASP.NET AJAX
Hierarchical data sources and RadControls
In his recent post Bertrand Le Roy announced that he migrated his ObjectHierarchicalDataSource and CompositeHierarchicalDataSource controls from GotDotNet to CodePlex. I just downloaded the sample projects and tried binding RadMenu and RadTreeView to those data source controls. Everything went according to plan: I’ve made two demo web sites – ObjectHierarchicalDataSource.zip and CompositeHierarchicalDataSource.zip. Feel free to check them... -
Web
ScriptResource.axd and and assemblies built in the future
Here is something I didn't know until recently:If you have a ScriptControl whose JavaScript files are web resources (served through ScriptResource.axd instead of WebResource.axd) and the date of the assembly is in the future, that very JavaScript file will fail to load. I have attached a test solution to illustrate the case - AssemblyInTheFuture.zip. Build it and run the Default.aspx page - everything is fine and a nasty alert saying "initialize" pops out. Now change the date of your PC - set it to yesterday. Stop ASP.NET Development server to reset the script resource cache dependency. Open Default.aspx again (but... -
Web ASP.NET AJAX
Say hello to RadControls Prometheus Futures
I am glad to announce that we have just released a "Futures" version of RadControls Prometheus. Why "Futures"? I will tell you in detail below, but those of you who are anxious to get their hands on the latest release, can download it from here: http://www.telerik.com/community/forums/thread/b311D-mhkha.aspxWhat's new in the "Futures" release? The highly anticipated RadScheduler. Those of you who had the chance to visit our TechEd booth may have already seen it. For those who haven't - here is a link to the online examples: http://www.telerik.com/demos/aspnet/prometheus-futures/Scheduler/Examples/Default/DefaultCS.aspxKey features: Day, Week and Month View Inline and Advanced editing of appointments Custom resources Recurring appointments Rich client-side behavior The RadScheduler... -
Web
Unwanted GET requests with latest IE and FireFox in case of empty img.src, script.src and link.href
If you create or declare img and script element with empty src attribute or link element with empty href attribute you will receive unwanted GET request with latest FireFox. The problem with img elements exist even in IE 6/ IE 7 however the request will be to the application root. You can check all these using this simple example:<%@ Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title>Untitled Page</title> <script src=""></script> <link href="" /></head><body> <form id="form1" runat="server"> <img src="" /> <div> </div> </form></body></html>You should be extra careful... -
Productivity
Visual Studio island in Second Life
It looks like Microsoft is investing in Second Life and soon several events will take place on the Visual Studio island they're building.This news isn't sensational but I like the idea.A... -
Release
RadMediaPlayer for Silverlight CTP is now live!
We are very happy to announce the official CTP of “RadControls for Silverlight” suite. Telerik is the first control vendor to give you a real Silverlight 1.0 controls which you can play with and use in your web pages. Those of you who signed up through the CTP registration form have already received the bits. For those of you who missed the registration – it is still open. The controls in the suite target Silverlight version 1.0 Beta. The official version of Silverlight 1.0 is expected this summer. So what do you need in order to use the controls? Nothing special really -... -
Web
An HTML drawing master :-)
I just came across something amazing... and this is not fake, this is real - you can check the actual... -
Web
Never access the controls collection in Page_Init or Page_PreInit with declarative data-binding in ASP.NET 2.0
If you have a GridView, DataGrid, DetailsView, FormView, DataList or Repeater bound using DataSourceID you should never touch the controls collection in Page_Init or Page_PreInit. If you do this your declarative data-binding will be lost on any outside of the control post-back. How to check this?Example:aspx<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server"> <asp:Button ID="Button1" Text="Button1" runat="server" /> <asp:GridView ID="GridView1" AllowPaging="true" DataSourceID="AccessDataSource1" runat="server"> </asp:GridView> <asp:DetailsView ID="DetailsView1" DataSourceID="AccessDataSource1" AllowPaging="true" runat="server"> </asp:DetailsView> <asp:FormView ID="FormView1" DataSourceID="AccessDataSource1" AllowPaging="true" runat="server"> <ItemTemplate> ProductID : <%# Eval("ProductID") %> </ItemTemplate> </asp:FormView> <asp:DataList ID="DataList1" DataSourceID="AccessDataSource1" runat="server"> <ItemTemplate> ... -
Web ASP.NET AJAX
Firewalls breaking ASP.NET AJAX!
This one is serious and may bite you any time. Yesterday Shaun posted this problem in our forums: he and his users were experiencing odd errors when requesting ASP.NET AJAX-based sites, and yes, that means RadControls "Prometheus" based ones as well. Partial rendering requests initiated by UpdatePanel controls failed with the cryptic message: ============== Sys.WebForms.PageRequestManagerParserErrorExeption: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near '<!DOCTYPE html P''. ============== Of course all that comes without any trace of Response.Write(),... -
Mobile
Using RadEditor as a Wiki Editor in MOSS
There have been a number of questions, regarding the RadEditor for MOSS and whether it is possible to use it in the SharePoint 2007 Wiki libraries and sites. The short answer to this question is - yes it's possible. Here is the long version: Wiki pages in MOSS 2007 are stored as normal document libraries. This means that when you edit a Wiki page, you are actually editing a list item. RadEditor for MOSS supports this scenario and you can use it to replace the default editor in all major browsers - Internet Explorer, Firefox, Safari, etc. Here is how...
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