(C#) List Files in Google Drive

Demonstrates how to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

bool 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.
bool bAutoReconnect = true;
success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect);

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

// Get 4 results per page.  (The default page size is 100, with a max of 1000.
rest.AddQueryParam("pageSize","4");

// This uses the Google Drive V3 API... (not V2)
string jsonResponse = rest.FullRequestNoBody("GET","/drive/v3/files");
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("request header = " + rest.LastRequestHeader);
    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;
}

// A successful response looks like this:
// {
//  "kind": "drive#fileList",
//  "files": [
//    {
//      "kind": "drive#file",
//      "id": "0B53Q6OSTWYolenpjTEU4ekJlQUU",
//      "name": "test",
//      "mimeType": "application/vnd.google-apps.folder"
//    },
//    {
//      "kind": "drive#file",
//      "id": "0B53Q6OSTWYolRm4ycjZtdXhRaEE",
//      "name": "starfish4.jpg",
//      "mimeType": "image/jpeg"
//    },
//    {
//      "kind": "drive#file",
//      "id": "0B53Q6OSTWYolMWt2VzN0Qlo1UjA",
//      "name": "hamlet2.xml",
//      "mimeType": "text/xml"
//    },
// ...
//    {
//      "kind": "drive#file",
//      "id": "0B53Q6OSTWYolc3RhcnRlcl9maWxlX2Rhc2hlclYw",
//      "name": "Getting started",
//      "mimeType": "application/pdf"
//    }
//  ]
// }

// 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());

int numFiles = json.SizeOfArray("files");
int i = 0;
while (i < numFiles) {
    json.I = i;
    Debug.WriteLine("name: " + json.StringOf("files[i].name"));
    Debug.WriteLine("id: " + json.StringOf("files[i].id"));
    Debug.WriteLine("mimeType: " + json.StringOf("files[i].mimeType"));
    Debug.WriteLine("-");
    i = i + 1;
}