C#多个文件上传FTP

Question

我有一个保存单个文件的方法。我想通过制作另一种方法来完成上传，在这种方法中，我可以同时保存多个文件。我该怎么做

public static class FileUpload
{
public static string UploadFtp(this IFormFile file, string Location, CdnSetting cdn)
{
var fileExtension = Path.GetExtension(file.FileName);
var imageUrl = cdn.Url + Location + "/" + Guid.NewGuid().ToString() + fileExtension;
using (WebClient client = new WebClient())
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(cdn.Address + imageUrl);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(cdn.Name, cdn.Password);
request.UsePassive = cdn.UsePassive;
request.UseBinary = cdn.UseBinary;
request.KeepAlive = cdn.KeepAlive;
byte[] buffer = new byte[1024];
var stream = file.OpenReadStream();
byte[] fileContents;
using (var ms = new MemoryStream())
{
int read;
while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
fileContents = ms.ToArray();
}
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(fileContents, 0, fileContents.Length);
}
var response = (FtpWebResponse)request.GetResponse();
}
return cdn.Return + imageUrl;
}
}

Answer 1

您可以重用您的方法。循环查看文件列表。

public static IEnumerable<string> UploadFtp(this IFormFile[] files, string Location, CdnSetting cdn)
{
var result = new ConcurrentBag<string>();
Parallel.ForEach(files, f =>
{
result.Add(UploadFtp(f, Location, cdn));
});
return result;
}

如果你想一个接一个地上传文件，而不是并行上传，foreach循环也是可能的。