(C# UWP/WinRT) Retrieve the metadata for a DriveItem

Fetches the JSON metadata for a DriveItem.

For more information, see https://docs.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_get?view=odsp-graph-online

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Chilkat.Http http = new Chilkat.Http();

// 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 FilesRead or Files.ReadWrite scope.)
http.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN";

// Sends the following GET request:
// GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}

// Make sure to automatically follow redirects
http.FollowRedirects = true;

// This example will get the metadata for /Misc/wildlife/penguins.jpg
http.SetUrlVar("item_path","Misc/wildlife/penguins.jpg");

string metaData = await http.QuickGetStrAsync("https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}");
if (http.LastMethodSuccess != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;
bool success = json.Load(metaData);
Debug.WriteLine(json.Emit());

// Sample JSON metadata result:

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/drive/root/$entity",
//   "@microsoft.graph.downloadUrl": "https://public.dm.files.1drv.com/y4mh0z_Og97O7Q...o2q1HhNBU",
//   "createdDateTime": "2017-06-04T20:40:22.48Z",
//   "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NzIuMjU3",
//   "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODcyLjY",
//   "id": "3A33FCEB9B74CC15!4872",
//   "lastModifiedDateTime": "2018-10-20T18:22:29.977Z",
//   "name": "penguins.jpg",
//   "size": 777835,
//   "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pgg",
//   "rating": {
//     "rating": 75,
//     "simpleRating": 4
//   },
//   "createdBy": {
//     "user": {
//       "displayName": "Joe Programmer",
//       "id": "3a33fceb9b74cc15"
//     }
//   },
//   "lastModifiedBy": {
//     "user": {
//       "displayName": "Joe Programmer",
//       "id": "3a33fceb9b74cc15"
//     }
//   },
//   "parentReference": {
//     "driveId": "3a33fceb9b74cc15",
//     "driveType": "personal",
//     "id": "3A33FCEB9B74CC15!4871",
//     "name": "wildlife",
//     "path": "/drive/root:/Misc/wildlife"
//   },
//   "file": {
//     "mimeType": "image/jpeg",
//     "hashes": {
//       "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
//     }
//   },
//   "fileSystemInfo": {
//     "createdDateTime": "2017-06-04T20:40:22.48Z",
//     "lastModifiedDateTime": "2009-07-14T05:32:31.674Z"
//   },
//   "image": {
//     "height": 768,
//     "width": 1024
//   },
//   "photo": {
//     "takenDateTime": "2008-02-18T05:07:31Z"
//   },
//   "shared": {
//     "scope": "users",
//     "owner": {
//       "user": {
//         "displayName": "Joe Programmer",
//         "id": "3a33fceb9b74cc15"
//       }
//     }
//   }
// }
// 

// If the response status code was not 200, then it failed.
if (http.LastStatus != 200) {
    Debug.WriteLine("Response Status Code = " + Convert.ToString(http.LastStatus));
    Debug.WriteLine("Failed.");
    return;
}

// Demonstrate how to parse the JSON...

string odata_context = json.StringOf("\"@odata.context\"");
string microsoft_graph_downloadUrl = json.StringOf("\"@microsoft.graph.downloadUrl\"");
string createdDateTime = json.StringOf("createdDateTime");
string cTag = json.StringOf("cTag");
string eTag = json.StringOf("eTag");
string id = json.StringOf("id");
string lastModifiedDateTime = json.StringOf("lastModifiedDateTime");
string name = json.StringOf("name");
int size = json.IntOf("size");
string webUrl = json.StringOf("webUrl");
int ratingRating = json.IntOf("rating.rating");
int ratingSimpleRating = json.IntOf("rating.simpleRating");
string createdByUserDisplayName = json.StringOf("createdBy.user.displayName");
string createdByUserId = json.StringOf("createdBy.user.id");
string lastModifiedByUserDisplayName = json.StringOf("lastModifiedBy.user.displayName");
string lastModifiedByUserId = json.StringOf("lastModifiedBy.user.id");
string parentReferenceDriveId = json.StringOf("parentReference.driveId");
string parentReferenceDriveType = json.StringOf("parentReference.driveType");
string parentReferenceId = json.StringOf("parentReference.id");
string parentReferenceName = json.StringOf("parentReference.name");
string parentReferencePath = json.StringOf("parentReference.path");
string fileMimeType = json.StringOf("file.mimeType");
string fileHashesSha1Hash = json.StringOf("file.hashes.sha1Hash");
string fileSystemInfoCreatedDateTime = json.StringOf("fileSystemInfo.createdDateTime");
string fileSystemInfoLastModifiedDateTime = json.StringOf("fileSystemInfo.lastModifiedDateTime");
int imageHeight = json.IntOf("image.height");
int imageWidth = json.IntOf("image.width");
string photoTakenDateTime = json.StringOf("photo.takenDateTime");
string sharedScope = json.StringOf("shared.scope");
string sharedOwnerUserDisplayName = json.StringOf("shared.owner.user.displayName");
string sharedOwnerUserId = json.StringOf("shared.owner.user.id");