I haven't taken this but if you're interested in learning C# this might be an effective, inexpensive way to get started

https://www.udemy.com/programming-for-complete-beginners-in-csharp/?hb=learn10&couponCode=learn10&utm_source=email_adhoc_coup&utm_campaign=thankyou-nov2014&utm_medium=10deal&utm_content=2014-11-10-learn10-2day-reminder&utm_term=top_developmentoursecard_title

After November 11th the price goes back up to $45

PS - for the cynical out there, I am not affiliated with this site or course author, nor do I get an consideration or referral money from Udemy if you sign up. I'm just trying to help you guys out.

shodson 

I haven't taken this but if you're interested in learning C# this might be an effective, inexpensive way to get started https://www.udemy.com/programming-for-complete-beginners-in-csharp/?hb=learn10&couponCode=learn10&utm_source=email_adhoc_coup&utm_campaign=thankyou-nov2014&utm_medium=10deal&utm_content=2014-11-10-learn10-2day-reminder&utm_term=top_developmentoursecard_title After November 11th the price goes back up to $45 PS - for the cynical out there, I am not affiliated with this site or course author, nor do I get an consideration or referral money from Udemy if you sign up. I'm just trying to help you guys out.

Already gave my money to Lynda.

https://zetcode.com/lang/csharp/

Table of Contents

C# language
Lexical structure
Basics
Data types
Strings
Operators
Flow control
Arrays
OOP I
Methods
OOP II
Properties
Structures
Delegates
Namespaces
Collections
Input, output
New features of C# 3.0
New features of C# 4.0
C#

It's ok, I've bought the course already.. plus a couple more..

Is it necessary to learn C# to become a profitable trader?

I think most trading system use C/C++