title: How can I get Visual Studio to error check my code (show the squiggles) without explicitly compiling?
body: <p>I use Visual Studio (C# Express 2008) occasionally to work with some vendor supplied C# code.  I am looking to make my experience with VS more like my experience with Eclipse.  I have become accustomed to the way Eclipse handles underlining errors (in java source).  When I make an error in my code in Eclipse, it will be underlined right away, and if I fix it, the underline will disappear almost immediately, or at worst, when I save the file.  In Visual Studio however, the underline remains until I next build the project.  </p>
  
  <p>Is there a setting somewhere I can change so that VS will build every time I save, or even as I am typing? Is this hard to do with C# because it is more complex in some way than Java?  Do I need to find someone to buy me the full (non express) version?  Also, what is the squiggly underline feature called?  I fear this question may have been asked before but I don't know the magic word to search for.</p>