Deleting file from FTP in C#

问题

My program can upload files into an FTP server using this code:

WebClient client = new WebClient();
client.Credentials = new System.Net.NetworkCredential(ftpUsername, ftpPassword);
client.BaseAddress = ftpServer;
client.UploadFile(fileToUpload, WebRequestMethods.Ftp.UploadFile, fileName);

Right now I need to delete some files and I can't do that right. What should I use instead of

client.UploadFile(fileToUpload, WebRequestMethods.Ftp.UploadFile, fileName);

回答1:

You'll need to use the FtpWebRequest class to do that one, I think.

FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);

//If you need to use network credentials
request.Credentials = new NetworkCredential(ftpUsername, ftpPassword); 
//additionally, if you want to use the current user's network credentials, just use:
//System.Net.CredentialCache.DefaultNetworkCredentials

request.Method = WebRequestMethods.Ftp.DeleteFile;
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Console.WriteLine("Delete status: {0}", response.StatusDescription);  
response.Close();

回答2:

public static bool DeleteFileOnFtpServer(Uri serverUri, string ftpUsername, string ftpPassword)
{
    try
    {
        // The serverUri parameter should use the ftp:// scheme.
        // It contains the name of the server file that is to be deleted.
        // Example: ftp://contoso.com/someFile.txt.
        // 

        if (serverUri.Scheme != Uri.UriSchemeFtp)
        {
            return false;
        }
        // Get the object used to communicate with the server.
        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
        request.Credentials = new NetworkCredential(ftpUsername, ftpPassword);
        request.Method = WebRequestMethods.Ftp.DeleteFile;

        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
        //Console.WriteLine("Delete status: {0}", response.StatusDescription);
        response.Close();
        return true;
    }
    catch (Exception ex)
    {
        return false;
    }            
}

Usage:

DeleteFileOnFtpServer(new Uri (toDelFname), user,pass);

回答3:

public static bool DeleteFileOnServer(Uri serverUri)
{

if (serverUri.Scheme != Uri.UriSchemeFtp)
{
    return false;
}
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
request.Method = WebRequestMethods.Ftp.DeleteFile;

FtpWebResponse response = (FtpWebResponse) request.GetResponse();
Console.WriteLine("Delete status: {0}",response.StatusDescription);  
response.Close();
return true;
}

回答4:

You should use FtpWebRequest when you need to delete files:

// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
request.Method = WebRequestMethods.Ftp.DeleteFile;

FtpWebResponse response = (FtpWebResponse) request.GetResponse();
Console.WriteLine("Delete status: {0}",response.StatusDescription);  
response.Close();

ref: http://msdn.microsoft.com/en-us/library/system.net.ftpwebrequest.aspx

来源：https://stackoverflow.com/questions/17617203/deleting-file-from-ftp-in-c-sharp

标签

.net

ftp

webclient

delete-file