linkfield to url

code behind

/// <summary>
/// Get the URL for a given sitecore linkfield
/// </summary>
/// <param name="lf">sitecore linkfield</param>
/// <returns>web URL</returns>
public static string GetLinkFieldURL(LinkField lf)
{
    switch (lf.LinkType.ToLower())
    {
        case "internal":
            // Use LinkMananger for internal links, if link is not empty
            return lf.TargetItem != null ? Sitecore.Links.LinkManager.GetItemUrl(lf.TargetItem) : string.Empty;
        case "media":
            // Use MediaManager for media links, if link is not empty
            return lf.TargetItem != null ? Sitecore.Resources.Media.MediaManager.GetMediaUrl(lf.TargetItem) : string.Empty;
        case "external":
            // Just return external links
            return lf.Url;
        case "anchor":
            // Prefix anchor link with # if link if not empty
            return !string.IsNullOrEmpty(lf.Anchor) ? "#" + lf.Anchor : string.Empty;
        case "mailto":
            // Just return mailto link
            return lf.Url;
        case "javascript":
            // Just return javascript
            return lf.Url;
        default:
            // Just please the compiler, this
            // condition will never be met
            return lf.Url;
    }
}