ASP.Net核心FormFile到FTP上传问题

Question

我必须上传tfp图片以供用户头像使用。我在下面编写了该代码以进行上传。但是给定的表单文件目录存在一些问题。

我下面有要上传的代码。

select unumber, name, localid
from (select t1.*,
             count(*) over (partition by unumber) as cnt,
             row_number() over (partition by unumber, name, localid order by unumber) as seqnum
      from table1 t1
     ) t1
where cnt > 1 and seqnum = 1;

这部分抛出错误：

 public async Task<IActionResult> EditProfile(string username , EditProfileModel model , IFormFile file)
        {

            if (!ModelState.IsValid)
            {
                var url = Url.Action("EditProfile", new { username = username, durum = "basarisiz" });
                return Redirect(url);
            }

            var user = await _userManager.FindByNameAsync(model.UserName);
            if (user != null)
            {


            if (file != null)
            {

                    FileInfo fileInfo = new FileInfo(file.FileName);

                    string url = "ftp://*MY SERVER IP*/httpdocs/wwwroot/assets/images";


                    FtpWebRequest FTP;

                    FTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
                    FTP.Credentials = new NetworkCredential("*MYID*", "*MYPASSWORD*");
                    FTP.KeepAlive = false;
                    FTP.Method = WebRequestMethods.Ftp.UploadFile;
                    FTP.UseBinary = true;
                    FTP.ContentLength = fileInfo.Length;
                    int buffLenght = 2048;
                    byte[] buff = new byte[buffLenght];
                    int contentLenght;

                    FileStream FS = fileInfo.OpenRead();
                    try
                    {
                        Stream strm = FTP.GetRequestStream();
                        contentLenght = FS.Read(buff, 0, buffLenght);
                        while (contentLenght != 0)
                        {
                            strm.Write(buff, 0, buffLenght);
                            contentLenght = FS.Read(buff, 0, buffLenght);
                        }
                        strm.Close();
                        FS.Close();

                    }
                    catch (Exception)
                    {

                        throw;
                    }

            }


           other parts of the code...

错误说找不到文件，因为例如我从桌面上传了一张照片，但是在发布表单时，表单文件具有以下目录：

MyProjectDirectory \ imagename.jpg