Modern software systems could have big complexity and it's very important to support existing systems and measure the quality. In this article we’re going to review different methods of evaluation code quality and security in modern software systems. We will review different known code quality metrics and how they can be applied depends on programming language. The goal of the article is to overview existing code quality metrics and propose new methods of analysis of software code quality. Research work is to focus on finding new techniques based on machine learning which allow to find different anti-patterns and code-smells in new ways. Result of method is to detect code-smell and overall quality of the specific software written on C# language.