Regex.Replace, string end

A C# Regex can change the ends of certain strings. With the Regex.Replace method, we use the "$" metacharacter to match the string end.

The end-matching metacharacter yields some capabilities that are hard to duplicate. It can make programs simpler and easier to maintain.

Pattern details

The "$" metacharacter shown in the Regex.Replace method call forces the string in the pattern to occur at the end of the input string for the Replace to take effect.

<br/>    Match BR html self-closing element.
$        Match end of string.

Example code

The solution we see here uses the Regex.Replace method. We combine it with the "$" character at the end, which signals the end of the string.

using System;

// Step 1: the string you want to change.
string s1 = "This string has something at the end<br/>";

// Step 2: use regular expression to trim the ending string.
string s2 = System.Text.RegularExpressions.Regex.Replace(s1, "<br/>$", "");

// Step 3: display the results.
Console.WriteLine("\"{0}\"\n\"{1}\"", s1, s2);
"This string has something at the end<br/>"
"This string has something at the end"

A summary

We replaced a substring that occurs at the end of an input string. This is useful for stripping markup or ending sequences that you don't want.