Jumploader is a very cool very powerful uploading agent. It is a java applet that runs in your browser that allows you to upload very large files by breaking them up into ‘partitions’ (small sections of a file). It has other neat features such as drag and drop files, image editing, meta data forms and file compression. The responsibility on the developers side is handling the file uploads with server side scripting of some kind. It works with pretty much any server side language such as PHP, .net, Python etc… Anything that can run in a web server and write to a file stream. I’ve worked with this recently in .net. There is an open source example of how to use Jumploader with C# on their website originally written by Michael Wright. It isn’t updated however and it was missing some key features that I needed such as examples on how to handle the ‘resume’ feature, allowing for the meta data forms and a few other things. I made several updates to the original code and have started an open source project on Google Project. You can visit the project at http://code.google.com/p/jlnetwrapper/. I will be updating this periodically and am always happy for other contributions to this project as well.

I have recently been using LINQ to accomplish much of my data abstraction and have found it very useful for building a robust ASP.Net application. Ultimately what LINQ to SQL does is it translates your C# code into a SQL query and returns an object or an object list instead of a dataset. This can be much easier to deal with than a dataset. I have run into a couple things that I didn’t expect so I thought I’d share. (more…)