About .NET and Other Amenities

I've just published an issue on Microsoft Product Feedback Center about a strange behavior I've found in the last two days. I'm working with Visual Studio 2008, developing an AJAX Enabled application that use massive javascript code. I take advantage of new Visual Studio 2008 intellisense for Javaxript that applies to files using <reference> tags but I saw that using an embedded resource javascript library cause Visual Studio 2008 to lock exclusively the resource assembly and fail during compilation with this error:

Unable to copy file "obj\Debug\ClassLibrary.dll" to "bin\Debug\ClassLibrary.dll". The process cannot access the file 'bin\Debug\ClassLibrary.dll' because it is being used by another process.

I've include a reference to a test project I've prepared to reproduce the issue, so you may download and test the example and possibly convalidate yourself the issue in the page of the feedback center.

Steps to reproduce without my test project is:

1) create a solution containing a classlibrary and a webapplication
2) create a embeddedresource.js file in the ClassLibrary and set it to Embedded Resource
3) add the WebResourceAttribute
4) create a referencing.js file in the WebApplication
5) insert a reference to the embeddedresource.js file like this: /// <reference name="ClassLibrary.embeddedjscript.js" assembly="ClassLibrary" />
6) save and close all files
7) open both javascript files
8) run the compilation with CTRL+SHIFT+B (rebuild all)
9) the error happen

Please take a moment to check my sample and please vote it on the feedback center if you get the same behavior.

Test Project: http://blog.boschin.it/download/referencebugtest.zip

Feedback page:

https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=328999

The application I wrote some months ago is now published in the BEST ITA Apps showcase through the MSDN Italy weblog. I put into this application all my knowledge about Silverlight 1.0 and ASP.NET AJAX.

The application has been write to support a realtime monitoring system that works with GPS informations send by the vehicles on a central server. It show the position and the duty of public transportation vehicles, with tools to display races delay and current status.

It has been build using a transparent Silverlight layer on a map, and receive pseudo-realtime data from an AJAX ScriptService. The data is updated every few seconds and the vehicles marker move on the map. The application take advantage of AjaxControlToolkit to give a better user experience where it is necessary to get input from the user, and use silverlight for the rendering of markers, and tracks.

I hope this may be a good example on how to use Silverlight in a real application.

Link: http://blogs.msdn.com/italy/archive/2008/02/05/best-ita-apps-selsystemweb-e-silverlight.aspx