Quickly familiarize yourself with regular expressions in C#, and learn how to use .NET regular expressions to implement powerful text pattern matching.

Regular expressions provide an extremely powerful method for pattern matching with strings. They are very useful for parsing information like dates, phone numbers, or zip codes from important text files, such as code files, log files, spreadsheets, or documents. The course discusses everyday use cases of regular expressions, e.g., data validation, information extraction, pattern matching, and search and replace.

This course will teach you the core concepts of pattern matching, character classes, special and meta characters, and quantifiers. You will also learn conditional regular expressions including lookahead and lookbehind assertions. You will also learn the APIs used in C# for regular expressions with hands-on code widgets. 

This course will teach you how to perform pattern matching with a regular expression using String and Regex APIs for the above-mentioned practical use cases in C#.

Tarun Telang

Tarun Telang is a passionate software engineer, leader, architect, author, and active contributor in various online technical forums.

C# and Microsoft Expert

Working with Regular Expressions in C#

## Applications of regular expressions

Regular expressions are widely used in different disciplines. These include information technology, biology, linguistics, and the social sciences.

**Text processing** is an essential part of programming. At the bare minimum, every program must read input from some source, often a file or stream, and convert it into useful data. This conversion step often involves parsing text strings to identify their contents, so that we can use them for further computation.

We can use regular expressions to perform the following operations on textual data:

# Applications of regular expressions

Regular expressions are widely used in different disciplines. These include information technology, biology, linguistics, and the social sciences.

**Text processing** is an essential part of programming. At the bare minimum, every program must read input from some source, often a file or stream, and convert it into useful data. This conversion step often involves parsing text strings to identify their contents, so that we can use them for further computation.

We can use regular expressions to perform the following operations on textual data:

Find out the usage of regular expressions in some common applications.

Introduction

Building Blocks of .NET Regular Expressions

Advanced Concepts

Course Wrap Up

Applications of Regular Expressions

Applications of regular expressions