Whats new in C# 2.0 3.0 4.0

What's new in C# 2.0
1. Generics
2. Nullable Types
3. Iterators
4. Partial Class Definitions
5. Anonymous Methods
6. The :: Alias Qualifier
7. Static Classes
8. Covariance and Contravariance
9. Fixed-Size Buffers
10. Friend Assemblies
11. extern Aliases
12. Method Group Conversion
13. Accessor Access Control
14. The #pragma Directive
What's new in C# 3.0
1. Lambda expressions
2. Extension methods
3. Implicitly typed local variables
4. Query comprehensions
5. Anonymous types
6. Object initializers
7. Implicitly typed arrays
8. Automatic properties
9. Partial methods
10. Expression trees


What's new in C# 4.0
1. Named and Optional Parameters
2. Dynamic Support
3. Variance
4. COM Interop

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