如何连接几个MvcHtmlString实例

MvcHtmlString htmlString1 = new MvcHtmlString("<div>Html String 1</div>");
MvcHtmlString htmlString2 = new MvcHtmlString("<div>Html String 2</div>");

string connectedHtml = htmlString1.ToString() + htmlString2.ToString();

MvcHtmlString htmlString1 = new MvcHtmlString("<div>Html String 1</div>");
MvcHtmlString htmlString2 = new MvcHtmlString("<div>Html String 2</div>");

StringBuilder sb = new StringBuilder();
sb.Append(htmlString1.ToString());
sb.Append(htmlString2.ToString());

string connectedHtml = sb.ToString();

public static MvcHtmlString ConcatenateHtmlStrings(this HtmlHelper htmlHelper, params MvcHtmlString[] htmlStrings)
{
    StringBuilder sb = new StringBuilder();
    foreach (MvcHtmlString htmlString in htmlStrings)
    {
        sb.Append(htmlString.ToString());
    }
    return MvcHtmlString.Create(sb.ToString());
}

MvcHtmlString htmlString1 = new MvcHtmlString("<div>Html String 1</div>");
MvcHtmlString htmlString2 = new MvcHtmlString("<div>Html String 2</div>");

MvcHtmlString connectedHtml = Html.ConcatenateHtmlStrings(htmlString1, htmlString2);