How to remove a file from the share with me folder on Google drive using the Google drive api V3 and C#

GoogleDriveAuthentcation.cs

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;

internal class GoogleDriveAuthentcation
    {
        /// <summary>
        /// Authenticate to Google Using Oauth2
        /// Documentation https://developers.google.com/accounts/docs/OAuth2
        /// Credentials are stored in System.Environment.SpecialFolder.Personal
        /// </summary>
        /// <param name="clientId">From Google Developer console https://console.developers.google.com</param>
        /// <param name="clientSecret">From Google Developer console https://console.developers.google.com</param>
        /// <param name="userName">Identifying string for the user who is being authentcated.</param>
        /// <returns>SheetsService used to make requests against the Sheets API</returns>
        public static DriveService AuthenticateOauth(string clientId, string clientSecret, string userName)
        {
            try
            {
                if (string.IsNullOrEmpty(clientId))
                    throw new ArgumentNullException("clientId");
                if (string.IsNullOrEmpty(clientSecret))
                    throw new ArgumentNullException("clientSecret");
                if (string.IsNullOrEmpty(userName))
                    throw new ArgumentNullException("userName");

                // These are the scopes of permissions you need. It is best to request only what you need and not all of them
                string[] scopes = new string[] { DriveService.Scope.DriveReadonly };     	//View the files in your Google Drive

                var credPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
                credPath = System.IO.Path.Combine(credPath, ".credentials/apiName");

                // Requesting Authentication or loading previously stored authentication for userName
                var credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets { ClientId = clientId, ClientSecret = clientSecret }
                                                                                             , scopes
                                                                                             , userName
                                                                                             , CancellationToken.None
                                                                                             , new FileDataStore(credPath, true)).Result;
                // Returning the SheetsService
                return new DriveService(new BaseClientService.Initializer()
                {
                    HttpClientInitializer = credential,
                    ApplicationName = "Drive Oauth2 Authentication Sample"
                });
            }
            catch (Exception ex)
            {
                Console.WriteLine("Create Oauth2 account DriveService failed" + ex.Message);
                throw new Exception("CreateServiceAccountDriveFailed", ex);
            }
        }
}

GoogleDriveDeleteFromSharedWithMe.cs

var service = GoogleDriveAuthentcation.AuthenticateOauth(clientId, secret, "My User");

// Get a list of files in the Share with me folder
var request = service.Files.List();
request.Q = "(sharedWithMe = true)";
request.Fields = "*";
var results = request.Execute();

// Find the file in question I wish to remove.
var myfile = results.Files.Where(a => a.Name.ToLower().Equals("receipt.pdf")).FirstOrDefault();

// Find the permissions for this user.
var per = myfile.Permissions.Where(a => a.EmailAddress.ToLower().Equals("[email protected]")).FirstOrDefault();

// Delete the permissions
 service.Permissions.Delete(myfile.Id, per.Id).Execute();

Note this doesn't work if you don't have permissions added. I have a file shared with me by what looks like a service account. I have no permissions listed so cant delete it. I am still working on that.

I have same problem with you.

Note this doesn't work if you don't have permissions added.

Do you have solution for this case?