When developing for Java in Eclipse, I can hit Ctrl+Shift+O to "Organize Imports", to have the IDE figure out which libraries I'm likely trying to use, and import them automatically.
Is there a similar feature in MonoDevelop for programming C#?
EDIT:
I'm new to C# and the whole Microsoft space. If there is no way to do this, how would one normally determine which library contained the class they were trying to use?
A similar feature was added in MonoDevelop 2.2 (the latest version).
You can use it by right-clicking on an unrecognized type, and hovering over "Resolve":
If the type is recognized (i.e., if you were already using Gdk;
in the above example), you will not see this menu.
If you're using Ubuntu Karmic, the version of MonoDevelop in the repositories is 2.0. You'll need to add this PPA to upgrade. If you're using Windows or OS X, you can download MonoDevelop 2.2 from the MonoDevelop website.