Gain insights into pattern matching with regular expressions in C#. Explore data validation, information extraction, and more using String and Regex APIs with practical examples.

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#

## Regular expressions API

The .NET framework provides a rich and comprehensive `Regex` class, defined within the `System.Text.RegularExpressions` namespace, to match patterns of text via regular expressions.

We can use the following `using` statement to access the regular expressions API in our program:

```
using System.Text.RegularExpressions;
```

This `System.Text.RegularExpressions` namespace contains the following useful classes and interfaces.


# Regular expressions API

The .NET framework provides a rich and comprehensive `Regex` class, defined within the `System.Text.RegularExpressions` namespace, to match patterns of text via regular expressions.

We can use the following `using` statement to access the regular expressions API in our program:

```
using System.Text.RegularExpressions;
```

This `System.Text.RegularExpressions` namespace contains the following useful classes and interfaces.


Learn string matching with a given pattern using regular expressions, and use quantifiers and boundaries to efficiently define these patterns.

Introduction

Building Blocks of .NET Regular Expressions

Advanced Concepts

Course Wrap Up

Regular Expressions APIs in C#

Regular expressions API