const string CONTENT_ID = "Content-ID:<{0}>"; // 图片的content ID
/// <summary>
/// 附件嵌入图片发送
/// </summary>
/// <param name="attchments"></param>
/// <param name="writer"></param>
/// <param name="encoding"></param>
public static void SendAttchments(List <MailAttchment> attchments, Stream writer, string encoding)
{
foreach (var att in attchments)
{
byte[] fileDate;
string fileName = "";
//读取文件内容
using (FileStream file = new FileStream(att.FileName, FileMode.Open))
{
fileDate = new byte[Convert.ToInt32(file.Length)];
file.Read(fileDate, 0, fileDate.Length);
fileName = Path.GetFileName(att.FileName);
}
Writer(SP, encoding, writer);
Writer(string.Format(FILE_HEADER, fileName), encoding, writer); //文件头
Writer(string.Format(FILE_DESCRIPTION, fileName), encoding, writer);
if (att.ContentID != null)
{
Writer(string.Format(CONTENT_ID, att.ContentID), encoding, writer); // 图片附件contentID
}
Writer(Formater.EncodingFormat("base64"), encoding, writer); //编码
Writer("\r\n", encoding, writer);
Writer(Convert.ToBase64String(fileDate), encoding, writer); //文件内容
Writer("", encoding, writer); //完成发送
}
}
/// <summary>
/// 内容发送
/// </summary>
/// <param name="body"></param>
/// <param name="writer"></param>
/// <param name="encoding"></param>
/// <param name="isHtml"></param>
public static void SendBody(string body, Stream writer, string encoding, bool isHtml)
{
Writer(Formater.BodyHeaderFormat(isHtml, encoding), encoding, writer);
Writer(Formater.EncodingFormat("base64"), encoding, writer);
Writer("\r\n", encoding, writer);
Writer(Convert.ToBase64String(Encoding.GetEncoding(encoding).GetBytes(body)), encoding, writer);
Writer("", encoding, writer);
}
const string FILE_DESCRIPTION = "Content-Disposition:attachment;filename=\"{0}\""; //文件注解
/// <summary>
/// 附件发送
/// </summary>
/// <param name="attchments"></param>
/// <param name="writer"></param>
/// <param name="encoding"></param>
public static void SendAttchments(List <string> attchments, Stream writer, string encoding)
{
foreach (string filePath in attchments)
{
byte[] fileDate;
string fileName = "";
//读取文件内容
using (FileStream file = new FileStream(filePath, FileMode.Open))
{
fileDate = new byte[Convert.ToInt32(file.Length)];
file.Read(fileDate, 0, fileDate.Length);
fileName = Path.GetFileName(filePath);
}
Writer(SP, encoding, writer);
Writer(string.Format(FILE_HEADER, fileName), encoding, writer); //文件头
Writer(Formater.EncodingFormat("base64"), encoding, writer); //编码
Writer("\r\n", encoding, writer);
Writer(Convert.ToBase64String(fileDate), encoding, writer); //文件内容
Writer("", encoding, writer); //完成发送
}
}
/// <summary>
/// 邮件头发送
/// </summary>
/// <param name="writer"></param>
/// <param name="message"></param>
public static void SendHeader(Stream writer, MailMessage message)
{
Writer(Formater.DateFormat(DateTime.Now), message.Encoding, writer); //日期
Writer(Formater.FormFormat(message.DisplayFrom, message.Encoding), message.Encoding, writer); //发件人
Writer(Formater.TosFormat(message.Tos, message.Encoding), message.Encoding, writer); //收件人
Writer("REPLY-TO:" + message.DisplayFrom.MailAddress, message.Encoding, writer); //回复地址
if (message.CCs.Count > 0)
{
Writer(Formater.CCsFormat(message.CCs, message.Encoding), message.Encoding, writer); //抄送
}
if (message.Mccs.Count > 0)
{
Writer(Formater.MCCsFormat(message.Mccs, message.Encoding), message.Encoding, writer); //密送
}
Writer(Formater.PriorityFormat(message.priority), message.Encoding, writer); //优先级
Writer(Formater.SubjectFormat(message.Subject, message.Encoding), message.Encoding, writer); //标题
Writer(Formater.EncodingFormat("base64"), message.Encoding, writer); //编码
Writer("X-Mailer:DS Mail Sender V1.0", message.Encoding, writer); //发件人
Writer(Formater.MessageIdFormat(System.Guid.NewGuid().ToString()), message.Encoding, writer);
Writer("MIME-Version:1.0", message.Encoding, writer);
Writer("Content-Type: multipart/mixed; boundary=\"mailboundary\"\r\n", message.Encoding, writer); //分隔符
Writer(SP, message.Encoding, writer); //分隔符
}