private const string SeparatorTitle = " - ";
    private const int MaxLenghtTitle = 60;
    public static string GeneratePageTitle(params string[] crumbs)
    {
        var title = "";

        for (int i = 0; i < crumbs.Length; i++)
        {
            title += string.Format
                        (
                            "{0}{1}",
                            crumbs[i],
                            (i < crumbs.Length - 1) ? SeparatorTitle : string.Empty
                        );
        }

        title = title.Substring(0, title.Length <= MaxLenghtTitle ? title.Length : MaxLenghtTitle).Trim();

        return title;
    }

public enum CacheControlType
{
    [Description("public")]
    _public,
    [Description("private")]
    _private,
    [Description("no-cache")]
    _nocache,
    [Description("no-store")]
    _nostore
}  



private const int MaxLenghtTitle = 60;
private const int MaxLenghtDescription = 170;
private const string FaviconPath = "~/cdn/ui/favicon.ico";
public static string GenerateMetaTag(string title, string description, bool allowIndexPage, bool allowFollowLinks, string author = "", string lastmodified = "", string expires = "never", string language = "fa", CacheControlType cacheControlType = CacheControlType._private)
{
        title = title.Substring(0, title.Length <= MaxLenghtTitle ? title.Length : MaxLenghtTitle).Trim();
        description = description.Substring(0, description.Length <= MaxLenghtDescription ? description.Length : MaxLenghtDescription).Trim();

        var meta = "";
        meta += string.Format("<title>{0}</title>\n", title);
        meta += string.Format("<link rel=\"shortcut icon\" href=\"{0}\"/>\n", FaviconPath);
        meta += string.Format("<meta http-equiv=\"content-language\" content=\"{0}\"/>\n", language);
        meta += string.Format("<meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\"/>\n");
        meta += string.Format("<meta charset=\"utf-8\"/>\n");
        meta += string.Format("<meta name=\"description\" content=\"{0}\"/>\n", description);
        meta += string.Format("<meta http-equiv=\"Cache-control\" content=\"{0}\"/>\n", EnumExtensions.EnumHelper<CacheControlType>.GetEnumDescription(cacheControlType.ToString()));
        meta += string.Format("<meta name=\"robots\" content=\"{0}, {1}\" />\n", allowIndexPage ? "index" : "noindex", allowFollowLinks ? "follow" : "nofollow");
        meta += string.Format("<meta name=\"expires\" content=\"{0}\"/>\n", expires);

        if (!string.IsNullOrEmpty(lastmodified))
            meta += string.Format("<meta name=\"last-modified\" content=\"{0}\"/>\n", lastmodified);

        if (!string.IsNullOrEmpty(author))
            meta += string.Format("<meta name=\"author\" content=\"{0}\"/>\n", author);

        //------------------------------------Google & Bing Doesn't Use Meta Keywords ...
        //meta += string.Format("<meta name=\"keywords\" content=\"{0}\"/>\n", keywords);

        return meta;
}

private const int MaxLenghtSlug = 45;
public static string GenerateSlug(string title)
{
        var slug = RemoveAccent(title).ToLower();
        slug = Regex.Replace(slug, @"[^a-z0-9-\u0600-\u06FF]", "-");
        slug = Regex.Replace(slug, @"\s+", "-").Trim();
        slug = Regex.Replace(slug, @"-+", "-");
        slug = slug.Substring(0, slug.Length <= MaxLenghtSlug ? slug.Length : MaxLenghtSlug).Trim();

        return slug;
}
    
private static string RemoveAccent(string text)
{
        var bytes = Encoding.GetEncoding("UTF-8").GetBytes(text);
        return Encoding.UTF8.GetString(bytes);
}

   Head.InnerHtml = SEO.GenerateMetaTag
                            (
                                title: SEO.GeneratePageTitle(".NET Tips", "آرشیو مطالب", "ASP.NET MVC #1"),
                                description: "چرا ASP.NET MVC با وجود فریم ورک پخته‌ای به نام ASP.NET web forms، اولین سؤالی که حین سوئیچ به ASP.NET MVC مطرح می‌شود این است: «برای چی؟». بنابراین تا به این سؤال پاسخ داده نشود، هر نوع بحث فنی در این مورد بی فایده است.",
                                allowIndexPage: true,
                                allowFollowLinks: true,
                                author: "وحید نصیری",
                                cacheControlType: SEO.CacheControlType._private
                            );
 

<title>.NET Tips - آرشیو مطالب - ASP.NET MVC #1</title>
<link rel="shortcut icon" href="../../cdn/images/ui/favicon.ico"/>
<meta http-equiv="content-language" content="fa"/>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta charset="utf-8"/>
<meta name="description" content="چرا ASP.NET MVC ؟با وجود فریم ورک پخته‌ای به نام ASP.NET web forms، اولین سؤالی که حین سوئیچ به ASP.NET MVC مطرح می‌شود این است: &#171;برای چی؟&#187;. بن ..."/>
<meta http-equiv="Cache-control" content="private"/>
<meta name="robots" content="index, follow" />
<meta name="expires" content="never"/>
<meta name="author" content="وحید نصیری"/>