---
title: "What are the new features included in C# 4.0 version?"  
description: "What are the new features included in C# 4.0 version?"  
author: "Sumit Kesarwani"  
published: 2013-06-15  
updated: 2020-09-18  
canonical: https://www.mindstick.com/interview/1778/what-are-the-new-features-included-in-c-sharp-4-0-version  
category: "c#"  
tags: ["c#"]  
reading_time: 1 minute  

---

# What are the new features included in C# 4.0 version?

· C# 4.0 has released recently in 2010 and all these features could work with visual studio 2010 because VS2010 can be targeted to .net framework 4.0 version. C# 4.0 mainly focused on dynamic programming and contains following features.

· Dynamic Binding

· Name and optional Arguments

· Improvements in CoVarience and ContraVarience

· COM specific interop features

## Answers

### Answer by Sumit Kesarwani

· C# 4.0 has released recently in 2010 and all these features could work with visual studio 2010 because VS2010 can be targeted to .net framework 4.0 version. C# 4.0 mainly focused on dynamic programming and contains following features.

· Dynamic Binding

· Name and optional Arguments

· Improvements in CoVarience and ContraVarience

· COM specific interop features


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Original Source: https://www.mindstick.com/interview/1778/what-are-the-new-features-included-in-c-sharp-4-0-version

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