What is .NET Framework?
It is the core of .NET infrastructure because it exists as a layer between the .NET applications and the underlying operating systems .The .NET framework encapsulates much of the basic functionality, such as debugging and security services , which was earlier built in various programming languages, in the form of collection of services and classes.
Whereas,
CTS (Common Type System) standardizes data types of al l programming languages using .NET under the umbrella of .NET to a common data type for easy and smooth communication among these .NET languages.
How CTS converts the data type to a common data type?
It converts the data type to a common data type, for example, when we declare an int type data type in C# and VB.Net then they are converted to int32 (Convert.ToInt 32) .
In other words, will have a common data type that provides flexible communication between these two languages.
Versions of C# & there features
C# 1.0 features: This version was introduced in year Jan 2002.
- Mordern
- Object oriented
- Type Safe Programming Language
C# 2.0 features: This version was introduced in year Nov 2005.
- Generics
- Partial classes
- Anonymous Type
- Iterators
- Nullable Types
- Static Class
- Delegates Interface
C# 3.0 features: This version was introduced in year Nov 2007.
- Implicit typed Local Variables
- Extension Methods
- Auto implemented properties
- Anonymous types
- Lambda expressions
- Expression tree
- Partial methods
C# 4.0 features: This version was introduced in year April 2010.
- Dynamic type
- Named and optional arguments
- Generic covariant and contravariant
- Type Equivalence and Embedded Interop Types
C# 5.0 features: This version was introduced in year August 2012.
- Asynchronous methods
- Caller information attributes
C# 6.0 features: This version was introduced in year July 2015.
- Expression bodied methods
- Conditional access operator
- Primary constructor
- Await in catch block
- Exception filters
- String interpolation
C# 7.0 features: This version was introduced in year March 2017.
- Local Functions or Nested Functions
- Binary Literals
- Digit Separators
- Pattern matching
- ref returns and ref Locals
- Tuples (Tuples Enhancement)
- Throw Expressions
- Expression Bodied Members (methods, properties, constructors, destructors, getters, setters, indexers, operators, Main method)