FTP - 不允许使用文件名。 （远程服务器错误 533）C#

Question

我的应用很简单：

Getting list of files from ftp - step 1

Looping each of items and getting file - step 2

Writing content from a xml file to database - step 3

Before moving to another item in loop let's move processed file to another folder - step 4 (error)

这是我的代码（请阅读评论！）：

if (ftpFiles.Any())
{
    foreach (var file in ftpFiles)
    {
        try
        {
            var item_path = $"ftp://my.url.ok:somePort/{item.FtpFolderName}/in/" + file;
            FtpWebRequest xml_request = (FtpWebRequest)WebRequest.Create(item_path);
            xml_request.Method = WebRequestMethods.Ftp.DownloadFile;
            xml_request.Credentials = new NetworkCredential("username", "password");

            using (FtpWebResponse xml_response = (FtpWebResponse)xml_request.GetResponse())
            {
                using (StreamReader xml_reader = new StreamReader(xml_response.GetResponseStream()))
                {
                    // PROCESSING XML FILE AND MAKING DATABASE CALL TO INSERT VALUE TO DB AND THAT IS FINE!
                }
            }


            // BEFORE I MOVE TO ANOTHER FILE IN LOOP I WANT TO MOVE PREVIOUS FILE TO ANOTHER FOLDER

            var item_to_move_original_path = $"ftp://my.url.ok:somePort/{item.FtpFolderName}/in/" + file;
            var item_to_move_new_path = $"ftp://my.url.ok:somePort/{item.FtpFolderName}/processed/" + file;

            FtpWebRequest xml_request_rename = (FtpWebRequest)WebRequest.Create(item_to_move_original_path);    
            xml_request_rename.Method = WebRequestMethods.Ftp.Rename;

            xml_request_rename.Credentials = new NetworkCredential("username", "password");
            xml_request_rename.RenameTo = item_to_move_new_path;

            // IN LINE BELOW APP CRASHES AND IT SAYS THAT File name is not allowed

            // One more question here is can I use xml_request that I've created in a loop earlier to rename/move a file or I have to crate this
            // xml_request_rename
            FtpWebResponse response = (FtpWebResponse)xml_request_rename.GetResponse();

        }
        catch(Exception ex)
        {}
    }
}

Answer 1

我已经能够通过更改此 url 来解决此问题（删除部分 url):

var item_to_move_new_path = $"ftp://my.url.ok:somePort/{item.FtpFolderName}/processed/" + file;

至：

var item_to_move_new_path = $"/{item.FtpFolderName}/processed/" + file;

可能会注意到我删除了

ftp://my.url.ok:somePort/ 

从路径开始，一切正常，怎么会？？？

一切正常，但我不知道为什么，如果有人能向我和其他正在观看这个 Thead 的人解释一下，那就太棒了！