c# - ASP.NET MVC - How can I check if a file exists on an ftp server -

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this question has answer here:

i'm working on asp.net mvc 5.1 web site, , need show picture if exists in ftp server (cdn). foldername , filename tied rules know them beforehand. need display message if file not exist.

how can check if file exists?

suggested duplicate (verify if file exists or not in c#) not since need check if file exists on remote server , not local folder.

try following code

  string destination = "ftp://something.com/";     string file = "test.jpg";     string extention = path.getextension(file);     string filename = file.remove(file.length - extention.length);     string filenamecopy = filename;     int attempt = 1;      while (!checkfileexists(getrequest(destination + "//" + filenamecopy + extention)))     {         filenamecopy = filename + " (" + attempt.tostring() + ")";         attempt++;     }      // upload, we've got name that's ok }  private static ftpwebrequest getrequest(string uristring) {     var request = (ftpwebrequest)webrequest.create(uristring);     request.credentials = new networkcredential("", "");     request.method = webrequestmethods.ftp.getfilesize;      return request; }  private static bool checkfileexists(webrequest request) {     try     {         request.getresponse();         return true;     }     catch     {         return false;     } }

reference ftp check if file exist


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