.Net中是否有CSS媒体类型的系统枚举?

类似于:

/// <summary>
/// List of available media types for css (comments from http://www.w3schools.com/css/css_mediatypes.asp)
/// </summary>
public enum CssMediaType
{
    /// <summary>
    /// Used for all media type devices
    /// </summary>
    all,
    /// <summary>
    /// Used for speech and sound synthesizers
    /// </summary>
    aural,
    /// <summary>
    /// Used for braille tactile feedback devices
    /// </summary>
    braille,
    /// <summary>
    /// Used for paged braille printers
    /// </summary>
    embossed,
    /// <summary>
    /// Used for small or handheld devices
    /// </summary>
    handheld,
    /// <summary>
    /// Used for printers
    /// </summary>
    print,
    /// <summary>
    /// Used for projected presentations, like slides
    /// </summary>
    projection,
    /// <summary>
    /// Used for computer screens
    /// </summary>
    screen,
    /// <summary>
    /// Used for media using a fixed-pitch character grid, like teletypes and terminals
    /// </summary>
    tty,
    /// <summary>
    /// Used for television-type devices
    /// </summary>
    tv
}