C# Interview: Interface vs Abstract Class—Beyond the Basics

Preparing for your next C# .NET interview? Understand interface vs abstract class in C# and learn how to explain the difference with practical reasoning, beyond memorized definitions. This walkthrough helps you structure your interview answer, connect the comparison to real development decisions, and explain when you would choose an interface or an abstract class. 🎯 COMPANY INTERVIEW QUESTIONS PLAYLIST Preparing for .NET interviews at Deloitte, Capgemini, Accenture, Cognizant, and other companies? Explore our company interview questions playlist:    • .NET Interview Questions & Real Experience...   💬 JOIN THE DISCUSSION Have you been asked this question in an interview? Share the follow-up question in the comments so other developers can practise too. 📱 JOIN OUR .NET WHATSAPP COMMUNITY Connect with fellow .NET developers for interview preparation and technical discussions: https://chat.whatsapp.com/KnA4DYwMoBt ABOUT DOTNET DECODE We break down interview questions and practical concepts for .NET developers with 3–8 years of experience, focusing on what interviewers test and how to explain your reasoning. Explore C# interview questions, ASP.NET Core architecture, backend system design, and Angular + .NET full-stack development. Subscribe for upcoming interview walkthroughs and our Angular + .NET full-stack application series. Get vidIQ to grow your channel faster! 🚀 https://vidiq.com/DotNetDecode 0:00 A Framework for Architectural Decisions 1:22 Defining Contracts with Interfaces 2:13 Leveraging Abstract Classes for Shared State 4:13 Navigating Inheritance Limits and Composition #DotNetInterview #CSharp #InterviewPreparation