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(C#) Delete Local Files that Do Not Exist on the FTP ServerDemonstrates how to get a list of local files in a directory tree that do not exist on the FTP server.
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Ftp2 ftp = new Chilkat.Ftp2(); ftp.Hostname = "ftp.example.com"; ftp.Username = "login"; ftp.Password = "password"; ftp.KeepSessionLog = true; // Connect and login to the FTP server. bool success = ftp.Connect(); if (success != true) { Debug.WriteLine(ftp.LastErrorText); return; } // Set the current remote directory to the root of // the remote tree to be compared. success = ftp.ChangeRemoteDir("abc123"); if (success != true) { Debug.WriteLine(ftp.LastErrorText); return; } // Recursively descend the local directory tree // and find the files that exist locally but not remotely. // These are the files what would be uploaded via // the SyncRemoteTree method call with mode = 1. // (Mode 1 would upload all files that do not exist on the FTP server.) // The actual uploading is avoided by setting the preview-only argument to true. int mode = 1; bool descendTree = true; bool previewOnly = true; success = ftp.SyncRemoteTree2("/temp/abc123",mode,descendTree,previewOnly); if (success != true) { Debug.WriteLine(ftp.LastErrorText); return; } // The files what would've been uploaded are now available in the SyncPreview property, // which contains a list of local file paths, one per line. // A program can iterate over them like this: Chilkat.StringArray sa = new Chilkat.StringArray(); sa.LoadFromText(ftp.SyncPreview); Chilkat.FileAccess fac = new Chilkat.FileAccess(); int numFiles = sa.Count; int i = 0; string localFilePath; while ((i < numFiles)) { localFilePath = sa.GetString(i); Debug.WriteLine(localFilePath); // An application can delete the file using Chilkat's file access object, // or it can choose to use the native file API available in the programming language: success = fac.FileDelete(localFilePath); if (success != true) { Debug.WriteLine("Failed to delete: " + localFilePath); } i = i + 1; } success = ftp.Disconnect(); |
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