Dart Requires Chilkat v11.0.0+
Outlook -- Copy Mail Folder and Contents to another Mail Folder

Copy a mailfolder and its contents to another mailfolder.
Chilkat Dart Downloads

Dart
import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final http = CkHttp();

  // Use your previously obtained access token here:
  http.authToken = 'MICROSOFT_GRAPH_ACCESS_TOKEN';

  // This example will copy /Inbox/abc/subFolderA and its contents to /Inbox/xyz
  // We'll need the folder ids for both source and destination folders..

  // Get the folder IDs from the folder map created by this example 
  final htFolderMap = CkHashtable();
  final sbMap = CkStringBuilder();
  sbMap.loadFile('qa_data/outlook/folderMap.xml', 'utf-8');
  htFolderMap.addFromXmlSb(sbMap);

  // Get the IDs for the source and destination folders.
  final String srcFolderId;
  try {
    srcFolderId = htFolderMap.lookupStr('/Inbox/abc/subFolderA');
  } on ChilkatException {
    print('Folder ID not found');
    return;
  }

  final String dstFolderId;
  try {
    dstFolderId = htFolderMap.lookupStr('/Inbox/xyz');
  } on ChilkatException {
    print('Destination folder ID not found');
    return;
  }

  // Create a JSON request body with this content:
  // 
  // 		{
  // 		  "DestinationId": "destinationId-value"
  // 		}

  final jsonRequestBody = CkJsonObject();
  jsonRequestBody.updateString('DestinationId', dstFolderId);

  http.setUrlVar('src_folder_id', srcFolderId);

  // Copy the source folder to the new location
  final resp = CkHttpResponse();
  try {
    http.httpJson('POST', 'https://graph.microsoft.com/v1.0/me/mailFolders/{\$src_folder_id}/copy', jsonRequestBody, 'application/json', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // A 201 response indicates success.
  if (resp.statusCode == 201) {
    print('Folder copied.');
  } else {
    print('Response status code = ${resp.statusCode}');
    print('Error: Folder not copied.');
  }

  // Show the response in both cases..
  final jsonResponse = CkJsonObject();
  jsonResponse.emitCompact = false;
  jsonResponse.load(resp.bodyStr);
  print(jsonResponse.emit());

  // A sample successful JSON response looks like this:

  // 	{
  // 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#mailFolder",
  // 	  "@odata.type": "#microsoft.graph.mailFolder",
  // 	  "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAM6JqMAAAAA=",
  // 	  "displayName": "subFolderA",
  // 	  "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwEAAAA=",
  // 	  "childFolderCount": 1,
  // 	  "unreadItemCount": 0,
  // 	  "totalItemCount": 0
  // 	}
}