c#MultipartFormDataContent添加方法(如何正确添加文件) [英] c# MultipartFormDataContent Add methods (how to properly add a file)

问题描述

我正在使用MultipartFormDataContent将文件上传到rest API.这工作得很好，但是我的问题集中在使用Add(...)方法包括文件内容的正确方法.目前，我正在这样做:

I'm using the MultipartFormDataContent to upload a file to a rest API. This is working well, but my questions focuses on the proper way to use the Add(...) method to include the file content. Currently I am doing such:

string fileName = "foobar.txt";
MultipartFormDataContent formContent = new MultipartFormDataContent();
ByteArrayContent byteArray = ...;
formContent.Add(byteArray, "file", fileName);
...

再次

可行，我试图理解Add(...)方法的参数.在以下位置的MSDN文档中:https://msdn.microsoft.com/zh-CN/library/system.net.http.multipartformdatacontent(v=vs.118).aspx

它有两种添加方法:

1. 添加(HttpContent，字符串)
2. 添加(HttpContent，String，String)

但是都没有列出描述，并且在深入研究方法本身时，参数仅(同样没有描述)描述为:

however neither has a description listed, and when drilling into the methods themselves, the parameters are only described (again without descriptions) as:

1. HttpContent内容，字符串名称
2. HttpContent内容，字符串名称，字符串fileName

所以，在此情况下，我的具体问题是:

• "名称"参数是什么?(我将其设置为文件"的那个)?
• 这需要是文字字符串"file"还是其他名称?
• 如何使用?

• What is the 'name' parameter? (the one I'm setting as "file")?
• Does this need to be the literal string "file" or can it be something else?
• How is it used?

推荐答案

它被写入内容配置标头中.您似乎可以将其保留下来以上传文件.名称看起来与输入名称相对应.

It is written into the content disposition header. it looks like you can leave it off for a file upload. name looks like it corresponds to the input name.

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition

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