IntelliSense provides an array of features that make language references easy to access. When you are coding, you do not have to leave the Code Editor or the Immediate Mode command window to perform searches on language elements. You can keep your context, find the information that you need, insert language elements directly into your code, and even have IntelliSense complete your typing for you.
Discusses how to display a list of valid members from a type or namespace in your code. Describes completion mode and suggestion mode. Suggestion mode is helpful when classes and members are used before they are defined.
Discusses the IntelliSense features in the the Transact-SQL editor. These include List Members, Complete Word, Parameter Info, Quick Info, code colorization, delimiter matching, collapsible code regions, and Transact-SQL Code Snippets.