Web socket is a technology developed to establish a bi-directional communication between client and server, over the web. It works on top of TCP and hopefully will render hacks like long polling obsolete. It’s supported by all modern browsers with 2 exceptions – opera mini and the default android browser (chart can be found here).
Forms authentication has an option to use a web.config based authentication. One of the possible encryption algorithms is sha1. To calculate it, you can create a tool in c# (I even did that, but.. I lost it when my drive crashed) or you can use python.
Recently we moved our main WPF project to .net framework 4.5 and Visual Studio 2012. Then when I tried to preview some of basic views in Visual Studio designer I faced some strange problems. We have several user controls that we use in our views.