[Mime] MediaTypes--电子邮件类型类 （转载）

/// <summary>
/// 类说明：Assistant
/// 编 码 人：苏飞
/// 联系方式：361983679  
/// 更新网站：[url=http://www.cckan.net/thread-655-1-1.html]http://www.cckan.net/thread-655-1-1.html[/url]
/// </summary>
using System.Net.Mime;
 
namespace DotNet.Utilities
{
    /// <summary>
    /// 电子邮件类型类
    /// </summary>
    public static class MediaTypes
    {
        public static readonly string Multipart;
 
        public static readonly string Mixed;
 
        public static readonly string Alternative;
 
        public static readonly string MultipartMixed;
 
        public static readonly string MultipartAlternative;
 
        public static readonly string TextPlain;
 
        public static readonly string TextHtml;
 
        public static readonly string TextRich;
 
        public static readonly string TextXml;
 
        public static readonly string Message;
 
        public static readonly string Rfc822;
 
        public static readonly string MessageRfc822;
 
        public static readonly string Application;
 
        static MediaTypes()
        {
            Multipart = "multipart";
            Mixed = "mixed";
            Alternative = "alternative";
            Message = "message";
            Rfc822 = "rfc822";
 
            MultipartMixed = string.Concat(Multipart, "/", Mixed);
            MultipartAlternative = string.Concat(Multipart, "/", Alternative);
            MessageRfc822 = string.Concat(Message, "/", Rfc822);
 
            TextPlain = MediaTypeNames.Text.Plain;
            TextHtml = MediaTypeNames.Text.Html;
            TextRich = MediaTypeNames.Text.RichText;
            TextXml = MediaTypeNames.Text.Xml;
 
        }
    }
}