如何在C＃SmtpClient编程中设置带有中文字符的附件文件名？

问题描述

我的代码如下：

  ContentType ct = new ContentType（）; 
 ct.MediaType = MediaTypeNames.Application.Octet; 
 ct.Name =这是一个很长的中文文件名希望能用它在附件名中.Doc； 
 Attachment attach = new Attachment（stream，ct）; 
  

但收到的附件没有正确的中文文件名，我发现ct.Name变成了 =？utf-8？B？6L + Z5piv5LiA5Liq5b6I6ZW / 55qE5Lit5paH5paH5Lu25ZCN5biM5pyb？= \r\n =？utf-8？B？6IO955So5a6D5Zyo6ZmE5Lu25ZCN5Lit？= b

plz建议，如何在附件文件名中使用中文字符？

解决方案

可以尝试：

 附件att =新附件（@ c：文件的路径\somename.txt，
 System.Net .Mime.MediaTypeNames.Application.Octet）; 
 
 //这本身应该起作用。 
 att.Name =история-болезни.doc; //非英语文件名
 
 //如果以上行没有使之起作用，请尝试此操作。 
 att.Name = System.Web.HttpUtility.UrlEncode（att.Name，System.Text.Encoding.UTF8）; 
  

my code is as below:

ContentType ct = new ContentType();
ct.MediaType = MediaTypeNames.Application.Octet;
ct.Name = "这是一个很长的中文文件名希望能用它在附件名中.Doc";
Attachment attach = new Attachment(stream, ct);

but the attachement received is not with the right chinese filename, and I found the ct.Name becames "=?utf-8?B?6L+Z5piv5LiA5Liq5b6I6ZW/55qE5Lit5paH5paH5Lu25ZCN5biM5pyb?=\r\n =?utf-8?B?6IO955So5a6D5Zyo6ZmE5Lu25ZCN5Lit?=" in the VS2010 debuger.

plz advice, how do I use the chinese charaters in attachment file name?

解决方案

Can you try:

Attachment att = new Attachment(@"c:\path to file\somename.txt",
System.Net.Mime.MediaTypeNames.Application.Octet);

//this itself should work.
att.Name = "история-болезни.doc";  // non-english filename

//if the above line doesn't make it work, try this.
att.Name = System.Web.HttpUtility.UrlEncode(att.Name, System.Text.Encoding.UTF8);

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