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CSharp · Console

/Program.cs

using System;
using System.Globalization;
using System.Text.RegularExpressions;
					
public class Program
{
	public static void Main()
	{
		 string text = "It is @google.com or @google";
  		string result = SafeReplace(text,"@google", "some domain.", true);
		string resultNoAtrate = SafeReplace(text,"google", "some domain.", true);
		Console.WriteLine(result);
		Console.WriteLine(resultNoAtrate);
			
	}
	
	
	public static string SafeReplace(string input, string find, string replace, bool matchWholeWord)
    {
        string textToFind = matchWholeWord ? string.Format(@"\b{0}\b", find) : find;
        return Regex.Replace(input, textToFind, replace);
    }
}