C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Text.RegularExpressions;
					
public class Program
{
	public static void Main()
	{
		string query = "fox";

			string output = "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG";
			Regex rgx = new Regex(query, RegexOptions.IgnoreCase);
			MatchCollection matches = rgx.Matches(output);
			if (matches.Count > 0)
			{
			
					output = Regex.Replace(output, query, "<span class='highlight'>" + matches[0] + "</span>", RegexOptions.IgnoreCase);
			}
		Console.WriteLine(output);
	}
}

​x
 
using System;
using System.Text.RegularExpressions;
                    
public class Program
{
    public static void Main()
    {
        string query = "fox";
​
            string output = "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG";
            Regex rgx = new Regex(query, RegexOptions.IgnoreCase);
            MatchCollection matches = rgx.Matches(output);
            if (matches.Count > 0)
            {
            
                    output = Regex.Replace(output, query, "<span class='highlight'>" + matches[0] + "</span>", RegexOptions.IgnoreCase);
            }
        Console.WriteLine(output);
    }
}

[
  {
    "tokenRequestorId": "40010030273",
    "tokenReferenceId": "DNITHE302023854093242612",
    "panReferenceId": "V-3020232651134255142696",
    "tokenStatus": "DEACTIVATED",
    "entityOfLastAction": "TOKEN_REQUESTOR",
    "tokenType": "SECURE_ELEMENT",
    "panSource": "KEY_ENTERED",
    "lastFourOfPAN": "6383"
  },
  {
    "tokenRequestorId": "40010075001",
    "tokenReferenceId": "DNITHE302024773412181777",
    "panReferenceId": "V-3020232651134255142696",
    "tokenStatus": "ACTIVE",
    "entityOfLastAction": "TOKEN_REQUESTOR",
    "tokenType": "HCE",
    "panSource": "KEY_ENTERED",
    "lastFourOfPAN": "6383"
  },
  {
    "tokenRequestorId": "40010030273",
    "tokenReferenceId": "DNITHE302025463049771793",
    "panReferenceId": "V-3020232651134255142696",
    "tokenStatus": "INACTIVE",
    "entityOfLastAction": "TOKEN_REQUESTOR",
    "tokenType": "SECURE_ELEMENT",
    "panSource": "KEY_ENTERED",
    "lastFourOfPAN": "6383"
  },
  {
    "tokenRequestorId": "40010043095",
    "tokenReferenceId": "DNITHE302026273290304818",
    "panReferenceId": "V-3020232651134255142696",
    "tokenStatus": "INACTIVE",
    "entityOfLastAction": "TOKEN_REQUESTOR",
    "tokenType": "HCE",
    "panSource": "KEY_ENTERED",
    "lastFourOfPAN": "6383"
  }
]

Cached Result
Last Run:	9:14:37 pm
Compile:	0.017s
Execute:	0.18s
Memory:	18.09Mb
CPU:	0.197s

View IL Code