Thursday, 22 June 2006

atlas:UpdatePanel Cancel/Abort UpdateProgress

Thanks to this blog Trabalhando com o ASP.NET Atlas Framework - Parte III for finally giving me the hint on how to add a Cancel/Abort option to the atlas:UpdatePanel UpdateProgress template.

Just add an <input runat="server" type="button"> <asp:LinkButton id="abortButton" runat="server">

The trick is id=abortButton! You don't need to add any further client or server code/jscript/whatever. The presence of that control id is enough. When the UpdateProgress is displayed, you can click to cancel the Ajax XmlHttpRequest.

Why was this so difficult to figure out? I guess because if you use the Designer to create the ProgressTemplate it adds the button for you... but i was creating the controls in Source view, and it was NOT immediately obvious how the Abort/Cancel should be implemented.

EDIT 22-Feb-07 This post is out-of-date; the released version of ASP.NET AJAX doesn't work this way... just one of the breaking changes - check the Migration Guide: Converting Applications from “Atlas” CTP to ASP.NET AJAX RTM

Sunday, 18 June 2006

,NET 3.0!

How did I not already know this... .NET Framework 3.0 will be released with Vista, and available for Windows XP and Windows Server 2003.

Interestingly (I think) it will just compile with the existing FX2.0 CLR, so I guess WinFX is just a mass of managed code? Still doesn't include LINQ or ObjectSpaces, so for database-focussed (ie. business) applications, what benefit does the renamed WinFX provide?

OT: great discussion-starter on Who needs value types anyway?, and this on .NET Framework 3.0 Naming...

Monday, 12 June 2006

RefreshPanel: precursor to Atlas

The Atlas UpdatePanel control seems to have it's genesis in the April 2005 RefreshPanel on gotdotnet.

The UpdatePanel has it's own 'book lite' on - USD9.99 doesn't seem to bad, although the fact they want to charge 'delivery' for overseas customers is very frustrating! The PDF itself is like an extended CodeProject article...

Sunday, 4 June 2006

Migrating to *ASP*.NET 2.0... from a Class Library project

In ASP.NET 1.1, Web Projects and the way they bind to Visual SourceSafe and a specific website make it *very* difficult to manage. I have always followed this advice to use
ASP.NET without web projects: the Project becomes a class library, and with a few minor VisualStudio configuration changes the source-control integration becomes a LOT easier.

But what happens when you want to migrate to ASP.NET 2.0? Do you:

  1. keep using the 'class library hack', but maybe forgo VisualStudio 2005's cool new features for ASP.NET Designer Support

  2. convert back to a Web Project in 1.1 then migrate to 2.0 (ie undo/reverse these instructions)

  3. migrate the 'class library' project to 2.0 first, then convert it to the new (ie post Visual Studio 2005 released add-in) Web Application Project/li>
  4. create a Web Site Project and copy all the existing pages into it

  5. or something else...

If your website is part of a larger solution (ie other projects such as Business Objects), or you have more than one developer, or you are actually using source-control, let me save you some time and recommend number 3.

  1. First open the Visual Studio 2003 Solution using 2005 and follow the steps to migrate to Framework 2.0.

  2. Then make any code changes to get it to compile

  3. Now for the tricky bit, open the <WebApplication>.csproj in NOTEPAD
    1. Add
      near <ProjectGuid>

    2. Add
      <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v8.0\WebApplications\Microsoft.WebApplication.targets" />
      near whatever other Import elements exist near the end of the file

    3. Add this to the end of the file (you may need to update some settings)
      <FlavorProperties GUID="{349c5851-65df-11da-9384-00065b846f21}">

  4. If you left the Solution open while editing, Visual Studio will detect the changes and offer to re-load. The first thing you should notice is the little 'world' in the Project icon (instead of the class-library square). The Project-Properties will also have a [Web] item, and all the benefits of ASP.NET Design-time, etc should be available.

Oh, and don't forget, if IIS is still pointing at the site's directory, you need to map the Framework 2.0 Handlers to it, using the Command Prompt...
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -s W3SVC/1/ROOT

Friday, 2 June 2006

ILMerge is my 'tool of the week'

I've already been using ILMerge to merge output from a number of different projects in a solution into a single EXE or DLL for redistribution (or inclusion in other projects). It works fantastically, particularly via an ILMerge NAnt Task.

There are a few tricks, like remembering that Type info includes the assembly name! If you're directly referring to a Type in code, or a .config file, those references MUST CHANGE if that Type is subsequently merged into a 'new' assembly with ILMerge.

That's pretty basic stuff thought. Both
K. Scott Allen: Using MSBuild and ILMerge to Package User Controls For Reuse
David Ebbo : Turning an ascx user control into a redistributable custom control describe another interesting use : packaging up ASCX-type User Controls into redistributable DLLs. Great idea if you find building User Controls with a Design surface to be much easier than programmatically building Server Controls.

Seems like 2.0 has plenty of cool tricks to offer if you can think of them...