Answer by Maxim Zabolotskikh for Need to perform Wildcard (*,?, etc) search on a string using Regex

The most accepted answer works fine for most cases and can be used in most scenarios:

"^" + Regex.Escape(pattern).Replace(@"\*", ".*").Replace(@"\?", ".") +"$";

However if you allow escaping in you input wildcard pattern, e.g. "find \*", meaning you want to search for a string "find *" with asterisk, it won't work. The already escaped * will be escaped to "\\\\\\*" and after replacing we have "^value\\ with\\\\.*$", which is wrong.

The following code (which for sure can be optimized and rewritten) handles that special case:

  public static string WildcardToRegex(string wildcard)    {        var sb = new StringBuilder();        for (var i = 0; i < wildcard.Length; i++)        {            // If wildcard has an escaped \* or \?, preserve it like it is in the Regex expression            var character = wildcard[i];            if (character == '\\'&& i < wildcard.Length - 1)            {                if (wildcard[i + 1] == '*')                {                    sb.Append("\\*");                    i++;                    continue;                }                if (wildcard[i + 1] == '?')                {                    sb.Append("\\?");                    i++;                    continue;                }            }            switch (character)            {                // If it's unescaped * or ?, change it to Regex equivalents. Add more wildcard characters (like []) if you need to support them.                case '*':                    sb.Append(".*");                    break;                case '?':                    sb.Append('.');                    break;                default:                    //// Escape all other symbols because wildcard could contain Regex special symbols like '.'                    sb.Append(Regex.Escape(character.ToString()));                    break;            }        }        return $"^{sb}$";    }

Solution for the problem just with Regex substitutions is proposed here https://stackoverflow.com/a/15275806/1105564