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Delphi ActiveX Examples


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(Delphi ActiveX) OneDrive -- Create a New Folder

Demonstrates how to create a new folder.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat for Delphi Downloads

Chilkat ActiveX DLL for Delphi

Chilkat non-ActiveX DLL for Delphi

* The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
json: TChilkatJsonObject;
response: WideString;
jsonReqBody: TChilkatJsonObject;
jObj: IChilkatJsonObject;
url: WideString;
resp: IChilkatHttpResponse;

begin
//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);

//  Use your previously obtained access token here:
//  See the following examples for getting an access token:
//     Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//     Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//     Refresh Access Token (Azure AD v2.0 Endpoint).
//     Refresh Access Token (Azure AD Endpoint).

//  (Make sure your token was obtained with the Files.ReadWrite scope.)
http.AuthToken := 'MICROSOFT_GRAPH_ACCESS_TOKEN';

//  To create a new folder, send a POST request like this:
//  POST /me/drive/items/{parent-item-id}/children

//  We first need to get the item-id for the folder where the new folder will be created.
//  This example will create a new folder named "abc" within /someFolder,
//  so we need the item-id for /someFolder.
json := TChilkatJsonObject.Create(Self);
json.EmitCompact := 0;
response := http.QuickGetStr('https://graph.microsoft.com/v1.0/users/me/drive/root:/someFolder');
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;
json.Load(response);
if (http.LastStatus <> 200) then
  begin
    Memo1.Lines.Add('Failed to get parent folder item id, status code = ' + IntToStr(http.LastStatus));
    Exit;
  end;

//  Set the URL var for the next request which will create the new folder.
http.SetUrlVar('parent_item_id',json.StringOf('id'));

//  The HTTP request body should contain JSON like this:

//  	{
//  	  "name": "abc",
//  	  "folder": { }
//  	}

jsonReqBody := TChilkatJsonObject.Create(Self);
jsonReqBody.AppendString('name','abc');
jObj := jsonReqBody.AppendObject('folder');

Memo1.Lines.Add('JSON body:');
Memo1.Lines.Add(jsonReqBody.Emit());

url := 'https://graph.microsoft.com/v1.0/users/me/drive/items/{$parent_item_id}/children';
resp := http.PostJson2(url,'application/json',jsonReqBody.Emit());
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

json.Load(resp.BodyStr);
Memo1.Lines.Add('Response:');
Memo1.Lines.Add(json.Emit());

//  A 201 response indicates success.
if (resp.StatusCode <> 201) then
  begin
    Memo1.Lines.Add('Failed to create folder.');
    Memo1.Lines.Add('Response status code = ' + IntToStr(resp.StatusCode));
  end
else
  begin
    Memo1.Lines.Add('Successfully created folder.');
  end;

//  A successful response:

//  	{
//  	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/items('3A33FCEB9B74CC15%214862')/children/$entity",
//  	  "createdBy": {
//  	    "application": {
//  	      "displayName": "Chilkat",
//  	      "id": "441c9990"
//  	    },
//  	    "user": {
//  	      "displayName": "Matt Murdock",
//  	      "id": "3a33fceb9b74cc15"
//  	    }
//  	  },
//  	  "createdDateTime": "2017-06-04T16:02:22.203Z",
//  	  "cTag": "adDozQTMzRkNFQjlCNzRDQzE1ITQ4NzAuNjM2MzIxODg5NDIyMDMwMDAw",
//  	  "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODcwLjA",
//  	  "id": "3A33FCEB9B74CC15!4870",
//  	  "lastModifiedBy": {
//  	    "application": {
//  	      "displayName": "Chilkat",
//  	      "id": "441c9990"
//  	    },
//  	    "user": {
//  	      "displayName": "Matt Murdock",
//  	      "id": "3a33fceb9b74cc15"
//  	    }
//  	  },
//  	  "lastModifiedDateTime": "2017-06-04T16:02:22.203Z",
//  	  "name": "abc",
//  	  "parentReference": {
//  	    "driveId": "3a33fceb9b74cc15",
//  	    "id": "3A33FCEB9B74CC15!4862",
//  	    "name": "someFolder",
//  	    "path": "/drive/root:/someFolder"
//  	  },
//  	  "size": 0,
//  	  "webUrl": "https://1drv.ms/f/s!ABXMdJvr_DM6pgY",
//  	  "fileSystemInfo": {
//  	    "createdDateTime": "2017-06-04T16:02:22.203Z",
//  	    "lastModifiedDateTime": "2017-06-04T16:02:22.203Z"
//  	  },
//  	  "folder": {
//  	    "childCount": 0
//  	  }
//  	}
// 
//  	Successfully created folder.
end;

 

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