This article introduces a Codebase Knowledge Graph (CKG) for a .NET Core project using Strazh, a tool that builds a graph from a C# codebase. The CKG is a graph-structured model that integrates free-form data into a network of entities, their semantic types, properties, and relationships. It provides fast access to various codebase insights with rich visualization, ability to catch design violations and mistakes, and help estimate changes, features, and refactoring. Strazh generates the graph by extracting codebase models, transforming them into RDF triples, and loading them into a graph database. The article discusses how to build a CKG from a C# codebase using Strazh, including its usage, benefits, and limitations. It also provides examples of how to use Strazh with Neo4j Database and offers tips for setting up the Docker environment.