如何使用Web客户端UploadFile，UploadValues在C＃中上传多个文件？ [英] How to upload multiple files using webclient UploadFile, UploadValues in C#?
问题描述
如何使用Web客户端UploadFile，UploadValues在C＃中上传多个文件
How to upload multiple files using webclient UploadFile, UploadValues in C#?
推荐答案
的This博客文章的细节究竟如何使用上传多个文件<一个HREF =http://msdn.microsoft.com/en-us/library/system.net.webclient.aspx> WebClient的。
This blog post details exactly how to upload multiple files using WebClient.
如果你想同时上传表单字段，并在同一职位的文件，你不能使用Web客户端作为-is--相反，它需要被延长。下面是
If you want to upload both form fields and a file in the same POST, you can't use WebClient as-is-- instead it will need to be extended. Here's an excerpt from this article explaining what is needed:
唯一的选择是创建符合
定制
实施的 RFC1867 ， rfc2388 和 W3C
的multipart / form-data的规范，
将启用与
附加表单字段文件上传，并公开cookie和头的
控制。
the only option is to create a custom implementation that conforms to rfc1867, rfc2388 and the W3C multipart/form-data specification that will enable file upload with additional form fields and exposes control of cookies and headers.
下面有三种实现方式，使用稍有不同的方法，但都应该努力使多部分表单数据：
Here are three implementations, using slightly different approaches, but all should work to enable multi-part form data:
- 的http://www.codeproject.com/Articles/72232/Csharp-File -upload-与外形场饼干和-he.aspx
- 的 http://www.codeproject.com/KB/cs/uploadfileex.aspx
- 的 http://aspnetupload.com/Upload-File-POST-HttpWebRequest-WebClient-RFC-1867.aspx
- http://www.codeproject.com/Articles/72232/Csharp-File-Upload-with-form-fields-cookies-and-he.aspx
- http://www.codeproject.com/KB/cs/uploadfileex.aspx
- http://aspnetupload.com/Upload-File-POST-HttpWebRequest-WebClient-RFC-1867.aspx
的WebClient 不是设计用来上传files-- .UploadValues，而不是它的用于发送POST-ED表单数据到服务器。要使用 WebClient.UploadFile 上传文件，或之一上述先进的样品。
WebClient.UploadValues is not designed to upload files-- instead it's used to send POST-ed form values to the server. You want to use WebClient.UploadFile to upload files, or one of the advanced samples above.
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