C# 3.0 - Features

1. Object and Collection Initializers

Object initializers let you assign values to any accessible fields or properties of an object at creation time without having to explicitly invoke a constructor.
http://msdn.microsoft.com/en-us/library/bb384062.aspx

2. Anonymous types - (var)

Anonymous types provide a convenient way to encapsulate a set of read-only properties into a single object without having to first explicitly define a type. The type name is generated by the compiler and is not available at the source code level. The type of the properties is inferred by the compiler.
http://msdn.microsoft.com/en-us/library/bb397696.aspx

3. Auto Implemented properties.

Auto-implemented properties make property-declaration more concise when no additional logic is required in the property accessors. They also enable client code to create objects
http://msdn.microsoft.com/en-us/library/bb384054.aspx

4. Lambda Expression

A lambda expression is an anonymous function that can contain expressions and statements, and can be used to create delegates or expression tree types.
http://msdn.microsoft.com/en-us/library/bb397687.aspx

5. Extension method

Extension methods enable you to "add" methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type. Extension methods are a special kind of static method, but they are called as if they were instance methods on the extended type. For client code written in C# and Visual Basic, there is no apparent difference between calling an extension method and the methods that are actually defined in a type
http://msdn.microsoft.com/en-us/library/bb383977.aspx

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