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C#

Get File Metadata

See more Google Drive Examples

Gets a file's metadata or content by ID.

See Google Drive Files get for additional details.

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C# 
bool success = false;

success = true;

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

//  This example uses a previously obtained access token having permission for the 
//  Google Drive scope.

Chilkat.AuthGoogle gAuth = new Chilkat.AuthGoogle();
gAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN";

Chilkat.Rest rest = new Chilkat.Rest();

//  Connect using TLS.
//  A single REST object, once connected, can be used for many Google Drive REST API calls.
//  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
//  then it will be automatically re-established as needed.
bool bAutoReconnect = true;
success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect);

//  Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth);

//  ------------------------------------------------------------------------------

//  We need to send a GET request like this:
//  GET https://www.googleapis.com/drive/v3/files/fileId
//  The fileId is part of the path.
Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/drive/v3/files/");
//  Assume we previously obtained the fileId for the file of interest...
sbPath.Append("0B53Q6OSTWYolbUF6WS1Gei1oalk");

//  Indicate that we want ALL possible fields.
//  If no fields are indicated, then only the basic fields are returned.
string allFields = "appProperties,capabilities,contentHints,createdTime,description,explicitlyTrashed,fileExtension,folderColorRgb,fullFileExtension,headRevisionId,iconLink,id,imageMediaMetadata,isAppAuthorized,kind,lastModifyingUser,md5Checksum,mimeType,modifiedByMeTime,modifiedTime,name,originalFilename,ownedByMe,owners,parents,permissions,properties,quotaBytesUsed,shared,sharedWithMeTime,sharingUser,size,spaces,starred,thumbnailLink,trashed,version,videoMediaMetadata,viewedByMe,viewedByMeTime,viewersCanCopyContent,webContentLink,webViewLink,writersCanShare";

rest.AddQueryParam("fields",allFields);

string jsonResponse = rest.FullRequestNoBody("GET",sbPath.GetAsString());
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

//  A successful response will have a status code equal to 200.
if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response JSON: " + jsonResponse);
    return;
}

//  ---------------------------------------------------
//  Sample code for parsing this JSON is shown below...
//  ---------------------------------------------------

//  A successful response looks like this:
//  {
//    "kind": "drive#file",
//    "id": "0B53Q6OSTWYolbUF6WS1Gei1oalk",
//    "name": "penguins.jpg",
//    "mimeType": "image/jpeg",
//    "starred": false,
//    "trashed": false,
//    "explicitlyTrashed": false,
//    "parents": [
//      "0B53Q6OSTWYola296ODZUSm5GYU0"
//    ],
//    "spaces": [
//      "drive"
//    ],
//    "version": "672",
//    "webContentLink": "https://docs.google.com/a/chilkatcloud.com/uc?id=0B53Q6OSTWYolbUF6WS1Gei1oalk&export=download",
//    "webViewLink": "https://drive.google.com/a/chilkatcloud.com/file/d/0B53Q6OSTWYolbUF6WS1Gei1oalk/view?usp=drivesdk",
//    "iconLink": "https://ssl.gstatic.com/docs/doclist/images/icon_11_image_list.png",
//    "thumbnailLink": "https://lh5.googleusercontent.com/uIV1dJdc8vsAQzaaIInpc9AV55AcdHhpM7fQeI2RN2qbCSnhjK9IDdNQAOTtkvjS9ZObqw=s220",
//    "viewedByMe": true,
//    "viewedByMeTime": "2016-10-08T12:38:02.258Z",
//    "createdTime": "2016-10-08T12:38:02.258Z",
//    "modifiedTime": "2016-10-08T12:38:02.258Z",
//    "modifiedByMeTime": "2016-10-08T12:38:02.258Z",
//    "owners": [
//      {
//        "kind": "drive#user",
//        "displayName": "Matthew Smith",
//        "me": true,
//        "permissionId": "08366696655122259092",
//        "emailAddress": "support@chilkatcloud.com"
//      }
//    ],
//    "lastModifyingUser": {
//      "kind": "drive#user",
//      "displayName": "Matthew Smith",
//      "me": true,
//      "permissionId": "08366696655122259092",
//      "emailAddress": "support@chilkatcloud.com"
//    },
//    "shared": false,
//    "ownedByMe": true,
//    "capabilities": {
//      "canEdit": true,
//      "canComment": true,
//      "canShare": true,
//      "canCopy": true,
//      "canReadRevisions": true
//    },
//    "viewersCanCopyContent": true,
//    "writersCanShare": true,
//    "permissions": [
//      {
//        "kind": "drive#permission",
//        "id": "08366696655122259092",
//        "type": "user",
//        "emailAddress": "support@chilkatcloud.com",
//        "role": "owner",
//        "displayName": "Matthew Smith"
//      }
//    ],
//    "originalFilename": "penguins.jpg",
//    "fullFileExtension": "jpg",
//    "fileExtension": "jpg",
//    "md5Checksum": "9d377b10ce778c4938b3c7e2c63a229a",
//    "size": "777835",
//    "quotaBytesUsed": "777835",
//    "headRevisionId": "0B53Q6OSTWYolUUlHVFhHdFlXQ0R1aHZuT0tORTVzc2h5NnZjPQ",
//    "imageMediaMetadata": {
//      "width": 1024,
//      "height": 768,
//      "rotation": 0,
//      "time": "2009:03:12 13:48:35"
//    },
//    "isAppAuthorized": false
//  }

//  Iterate over each file in the response and show the name, id, and mimeType.
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.Load(jsonResponse);

//  Show the full JSON response.
json.EmitCompact = false;
Debug.WriteLine(json.Emit());
Debug.WriteLine("-");

//  Demonstrate how to get pieces of information:
Debug.WriteLine("Original Filename: " + json.StringOf("originalFilename"));

bool wasLastModifiedUserMe = json.BoolOf("lastModifyingUser.me");
Debug.WriteLine("Was Last Modified by Me: " + Convert.ToString(wasLastModifiedUserMe));

//  Assuming this is an image file...
int width = json.IntOf("imageMediaMetadata.width");
Debug.WriteLine("Image Width: " + Convert.ToString(width));

//  Iterate over parents...
int i;
int numParents = json.SizeOfArray("parents");
i = 0;
while (i < numParents) {
    json.I = i;
    Debug.WriteLine("Parent " + Convert.ToString(i) + ": " + json.StringOf("parents[i]"));
    i = i + 1;
}

//  Iterate over owners...
int numOwners = json.SizeOfArray("owners");
i = 0;
while (i < numOwners) {
    json.I = i;
    Debug.WriteLine("Owner " + Convert.ToString(i) + ": kind=" + json.StringOf("owners[i].kind") + " displayName=" + json.StringOf("owners[i].displayName"));
    i = i + 1;
}

//  Iterate over permissions...
int numPermissions = json.SizeOfArray("permissions");
i = 0;
while (i < numPermissions) {
    json.I = i;
    Debug.WriteLine("Permission " + Convert.ToString(i) + ": kind=" + json.StringOf("permissions[i].kind") + " id=" + json.StringOf("permissions[i].id"));
    i = i + 1;
}