C# 中 如何使用 httpclient 以form-data形式上传文件到服务器

[weixin_38088844]

using (var multipartFormDataContent = new MultipartFormDataContent())
{
foreach (var keyValuePair in paramList)
{
httpClient.DefaultRequestHeaders.Add(keyValuePair.Key, keyValuePair.Value);
}
multipartFormDataContent.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");
if (!File.Exists(filePath))
return null;
string fileName = Path.GetFileName(filePath);
multipartFormDataContent.Add(new StreamContent(new MemoryStream(File.ReadAllBytes(@filePath))), "file","file");
HttpResponseMessage response = await httpClient.PostAsync(url, multipartFormDataContent);
return response;
}
这是我写的代码，我如果在工程里提交的话 会返回说键或者值没加进去，请问我哪里出问题

[weixin_38101849]

Hi,
你可以参考一下下面这些文章。
C# HttpClient Post 参数同时上传文件，
C# HttpClient上传文件到服务器(multipart/form-data)。
Regards,
Kyle
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