Split a string on newlines in C#

This post will discuss how to split a string on newlines in C#.

1. Using `String.Split()` method

The standard way to split a string in C# is using the String.Split() method. It splits a string into substrings and returns a string array. We can optionally pass the StringSplitOptions enum to the Split() method to specify whether include the empty substrings or not. The splitting can be done in two ways:

1. Split by Environment.NewLine

The idea is to split the string using Environment.NewLine, which gets the newline string defined for the current environment.

using System;

public class Example

{

public static void Main()

{

string lines = @"Split

This

String";

string[] strings = lines.Split(Environment.NewLine,

StringSplitOptions.RemoveEmptyEntries);

Console.WriteLine(String.Join(',', strings));

}

Output: Split,This,String

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2. Split by Unicode character array

Another way to split the string is using a Unicode character array. To split the string by line break, the character array should contain the CR and LF characters, i.e., carriage return \r and line feed \n.

using System;

public class Example

{

public static void Main()

{

string lines = @"Split

This

String";

char[] delims = new[] { '\r', '\n' };

string[] strings = lines.Split(delims, StringSplitOptions.RemoveEmptyEntries);

Console.WriteLine(String.Join(',', strings));

}

Output: Split,This,String

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2. Using `Regex.Split()` method

Alternatively, we can split a string using a regular expression. The idea is to use the Environment.NewLine as a regular expression pattern.

This can be done using the Regex.Split() method, which takes a string to split and a regular expression pattern. Here’s what the code would look like:

using System;

using System.Text.RegularExpressions;

public class Example

{

public static void Main()

{

String lines = @"Split

This

String";

string[] strings = Regex.Split(lines, Environment.NewLine);

Console.WriteLine(String.Join(',', strings));

}

Output: Split,This,String

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That’s all about splitting a string on newlines in C#.

Split a string on newlines in C#

1. Using String.Split() method

2. Using Regex.Split() method

1. Using `String.Split()` method

2. Using `Regex.Split()` method