Adding " target=_blank" to a String.Format ASP.NET

Hi,

I need to add " target=_blank" to the below code to make the link open in a new page.
Any idea how to add it?

Thank you!!!

 private static readonly string link = "<a href=\"{0}{1}\">{2}</a>";

 if (!match.Value.Contains("://"))
                {
                    body = body.Replace(match.Value, string.Format(link, "http://", match.Value, ShortenUrl(match.Value, 500)));
                }
                else
                {
                    body = body.Replace(match.Value, string.Format(link, string.Empty, match.Value, ShortenUrl(match.Value, 500)));
                }

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