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In this article, let's learn about how to use OrderBy in LINQ in .NET.

Note: If you have not done so already, I recommend you read the article on Using LINQ to Select and Project Data.

Table of Contents

1. Introduction
2. TLDR
3. Single Property
4. Single Property in Descending
5. Multiple Properties
6. Multiple Properties in Descending
7. Summary

Introduction

We can use LINQ OrderBy to sort data within collections. ThenBy can be chained to sort by more than one column. Sorting can be done in both ascending and descending order. Default sort is done in ascending order.

LINQ has the following sort methods which can be chained and used in any combination.

• OrderBy()
• ThenBy()
• OrderByDescending()
• ThenByDescending()

TLDR

OrderBy Single Property

The following example shows how to sort Product class by Name in ascending order.

OrderBy Single Property in Descending

The following example shows how to sort Product class by Name in descending order.

OrderBy Multiple Properties

The following example shows how to sort Product class with more than one property in ascending order.

OrderBy Multiple Properties in Descending

The following example shows how to sort Product class with more than one property in descending order.

Summary

In this article we learn't how to sort data within collection using LINQ. We also learn't how to sort with multiple fields. All these can be used with any IEnumerable or IQueryable types.