How can I check if SQL Server is running through C# code without causing an exception?

Thank you very much. This is exactly what I needed!

Is there a function in MS SQL server to get the total size of the current database (or a single table) in KBs? It's possible to get this information through Enterprise Manager but I would like to get it through C# code.

If you want to do server side, for example build websites that use databases you should focus on asp.net. It's really great for doing that kind of work. I consider Flash in most cases a tool for Graphics Designers who want complete control over complex animated visual effects. It is programmable but it really depends on the project you are working on whether a Flash ActionScript solution is a good choice. Sometimes it is, it is for example excellent for developing web based games. I think you should first think about what you want to be able to do with your knowledge before deciding what to learn. Actually Flash and Asp.net can work really well together so if you have the time and interest to study both technologies it will be well worth it.

Can I somehow find out the total memory my Hashtable uses? c# example code would be really nice.

Is there a simple way to get (in code) the total memory my asp.net application is using? A code example in c# would be great!