---
title: "Briefly explain the characteristics of reference-type variables that are supported in the C# programming language."  
description: "Briefly explain the characteristics of reference-type variables that are supported in the C# programming language."  
author: "Sumit Kesarwani"  
published: 2014-09-02  
updated: 2020-09-23  
canonical: https://www.mindstick.com/interview/2111/briefly-explain-the-characteristics-of-reference-type-variables-that-are-supported-in-the-c-sharp-programming-language  
category: "c#"  
tags: ["c#"]  
reading_time: 1 minute  

---

# Briefly explain the characteristics of reference-type variables that are supported in the C# programming language.

The variables that are based on reference types store references to the actual data.

## The keywords that are used to declare reference types are:

**Class -** Refers to the primary building block for the programs, which is used to encapsulate variables and methods into a single unit.

**Interface -** Contains only the signatures of methods, properties, events, or indexers.

**Delegate -** Refers to a reference type that is used to encapsulate a named or anonymous method.

## Answers

### Answer by Sumit Kesarwani

The variables that are based on reference types store references to the actual data.

## The keywords that are used to declare reference types are:

**Class -** Refers to the primary building block for the programs, which is used to encapsulate variables and methods into a single unit.

**Interface -** Contains only the signatures of methods, properties, events, or indexers.

**Delegate -** Refers to a reference type that is used to encapsulate a named or anonymous method.


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Original Source: https://www.mindstick.com/interview/2111/briefly-explain-the-characteristics-of-reference-type-variables-that-are-supported-in-the-c-sharp-programming-language

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