In order to improve Web Site Project build times keep number of files in
your /app_code directory small. If you end up having a lot of class files
within this directory, move them into separate class library project and
reference that project from your web-site. This isn't usually an issue if
you just have a small number of files in /app_code, but if you have lots
of directories or dozens of files you will be able to get speed
improvements.这个不知道有什么根据?
One other thing to be aware of is that whenever you
switch from source to design-view within the Visual Studio HTML designer, the
designer causes the /app_code directory to be compiled before the designer
surface loads. The reason for this is so that you can host controls
defined within /app_code in the designer. If you don't have an /app_code
directory, or only have a few files defined within it, the page designer
will be able to load much quicker (since it doesn't need to perform a big
compilation first).
