Split a string using a string delimiter in C#

This post will discuss how to split a string by a string delimiter in C#.

1. Using `String.Split()` method

The String.Split() method splits a string into substrings based on the strings in an array.

The following code example demonstrates how to use the String.Split() method to split a string using a string separator with StringSplitOptions.None to include empty array elements in the returned array.

using System;

public static class Extensions

{

public static string[] Split(this string str, string separator) {

return str.Split(new string[] { separator }, StringSplitOptions.None);

}

public class Example

{

public static void Main()

{

string str = "Split##Me##Apart";

string separator = "##";

string[] tokens = str.Split(separator);

Console.WriteLine(String.Join(Environment.NewLine, tokens));

}

Output:

Split

Apart

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2. Using `Regex.Split()` method

The Regex.Split() method is used to split an input string into an array of substrings at the positions defined by a regular expression match.

The following code example demonstrates how to use the Regex.Split() method to split a string using a string separator.