C#与谷歌驱动器API:{“访问被拒绝”}

因此，我将在C#中为Google Drive API Rest介绍以下内容。我基本上想从控制台C#应用程序中列出我在谷歌硬盘中的文件

我创建了Oauth2凭据，下载了json文件，导入到我的VisualStudio项目中，使用NuGet manager安装了Google Drive API v3，复制并粘贴了C#代码（见下文）。但是我在GoogleWebAuthorizationBroker.AuthorizationAsync（）方法中不断收到错误{“拒绝访问”}（在innerException中）。有人能帮我吗

我的C#代码：

使用Google.api.Auth.OAuth2；
使用Google.api.Drive.v3；
使用Google.api.Drive.v3.Data；
使用Google.api.Services；
使用Google.api.Util.Store；
使用制度；
使用System.Collections.Generic；
使用System.IO；
使用System.Linq；
使用系统文本；
使用系统线程；
使用System.Threading.Tasks；
命名空间驱动器\u API\u快速启动\u第二次尝试_
{
班级计划
{
//如果修改这些作用域，请删除以前保存的凭据
//位于~/.credentials/drive-dotnet-quickstart.json
静态字符串[]范围={DriveService.Scope.DriveReadonly}；
静态字符串ApplicationName=“Drive API.NET Quickstart”；
静态void Main（字符串[]参数）
{
用户凭证；
使用（var）流=
新的文件流（“client_secret.json”、FileMode.Open、FileAccess.Read））
{
字符串credPath=System.Environment.GetFolderPath(
系统、环境、专用文件夹、个人）；
credPath=Path.Combine（credPath，“.credentials/drive dotnet quickstart.json”）；
凭证=GoogleWebAuthorizationBroker.AuthorizationAsync(
GoogleClientSecrets.Load（stream.Secrets），
范围，
“用户”，
取消令牌。无，
新文件数据存储（credPath，true））。结果；
Console.WriteLine（“凭证文件保存到：”+credPath）；
}
//创建驱动器API服务。
var service=new DriveService（new BaseClientService.Initializer（）
{
HttpClientInitializer=凭证，
ApplicationName=ApplicationName，
});
//定义请求的参数。
fileResource.ListRequest ListRequest=service.Files.List（）；
listRequest.PageSize=10；
listRequest.Fields=“nextPageToken，files（id，name）”；
//列出文件。
IList files=listRequest.Execute（）
.档案；
Console.WriteLine（“文件：”）；
if（files！=null&&files.Count>0）
{
foreach（文件中的var文件）
{
Console.WriteLine（“{0}（{1}）”，file.Name，file.Id）；
}
}
其他的
{
WriteLine（“未找到任何文件”）；
}
Console.Read（）；
}
}
}

调试错误：

System.AggregateException was unhandled
  HResult=-2146233088
  Message=One or more errors occurred.
  Source=mscorlib
  StackTrace:
       at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
       at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
       at System.Threading.Tasks.Task`1.get_Result()
       at Drive_API_Quickstart__2nd_attempt_.Program.Main(String[] args) in W:\Adriano\Visual Studio\Google Drive\Drive API Quickstart (2nd attempt)\Drive API Quickstart (2nd attempt)\Program.cs:line 34
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 
       ErrorCode=5
       HResult=-2147467259
       Message=Access is denied
       NativeErrorCode=5
       Source=System
       StackTrace:
            at System.Net.HttpListener.AddAllPrefixes()
            at System.Net.HttpListener.Start()
            at Google.Apis.Auth.OAuth2.LocalServerCodeReceiver.StartListener()
            at Google.Apis.Auth.OAuth2.LocalServerCodeReceiver.<ReceiveCodeAsync>d__8.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.AuthorizationCodeInstalledApp.<AuthorizeAsync>d__8.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.<AuthorizeAsync>d__4.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.<AuthorizeAsync>d__1.MoveNext()
       InnerException: 

System.AggregateException未处理
HResult=-2146233088
消息=发生了一个或多个错误。
Source=mscorlib
堆栈跟踪：
位于System.Threading.Tasks.Task.ThrowifeException（布尔值IncludeTaskCanceledException）
位于System.Threading.Tasks.Task`1.GetResultCore（布尔waitCompletionNotification）
在System.Threading.Tasks.Task`1.get_Result（）中
在W:\Adriano\visualstudio\Google Drive\Drive API Quickstart（第二次尝试）\Drive API Quickstart（第二次尝试）\Program.cs中的Drive\API\Quickstart\uu第二次尝试\uu.Program.Main（字符串[]args）处
位于System.AppDomain.\u nExecuteAssembly（RuntimeAssembly程序集，字符串[]args）
位于System.AppDomain.ExecuteAssembly（字符串汇编文件、证据汇编安全性、字符串[]args）
在Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly（）上
位于System.Threading.ThreadHelper.ThreadStart\u上下文（对象状态）
位于System.Threading.ExecutionContext.RunInternal（ExecutionContext ExecutionContext、ContextCallback回调、对象状态、布尔值preserveSyncCtx）
在System.Threading.ExecutionContext.Run（ExecutionContext ExecutionContext，ContextCallback回调，对象状态，布尔保存SyncCTX）
在System.Threading.ExecutionContext.Run（ExecutionContext ExecutionContext，ContextCallback回调，对象状态）
位于System.Threading.ThreadHelper.ThreadStart（）处
内部异常：
错误代码=5
HResult=-2147467259
消息=访问被拒绝
NativeErrorCode=5
来源=系统
堆栈跟踪：
在System.Net.HttpListener.AddAllPrefixes（）中
在System.Net.HttpListener.Start（）中
在Google.api.Auth.OAuth2.LocalServerCodeReceiver.StartListener（）上
在Google.api.Auth.OAuth2.LocalServerCodeReceiver.d__8.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Google.api.Auth.OAuth2.AuthorizationCodeInstalledApp.d_u8.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Google.api.Auth.OAuth2.GoogleWebAuthorizationBroker.d_u4.MoveNext（）上
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Google.api.Auth.OAuth2。
System.AggregateException was unhandled
  HResult=-2146233088
  Message=One or more errors occurred.
  Source=mscorlib
  StackTrace:
       at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
       at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
       at System.Threading.Tasks.Task`1.get_Result()
       at Drive_API_Quickstart__2nd_attempt_.Program.Main(String[] args) in W:\Adriano\Visual Studio\Google Drive\Drive API Quickstart (2nd attempt)\Drive API Quickstart (2nd attempt)\Program.cs:line 34
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 
       ErrorCode=5
       HResult=-2147467259
       Message=Access is denied
       NativeErrorCode=5
       Source=System
       StackTrace:
            at System.Net.HttpListener.AddAllPrefixes()
            at System.Net.HttpListener.Start()
            at Google.Apis.Auth.OAuth2.LocalServerCodeReceiver.StartListener()
            at Google.Apis.Auth.OAuth2.LocalServerCodeReceiver.<ReceiveCodeAsync>d__8.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.AuthorizationCodeInstalledApp.<AuthorizeAsync>d__8.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.<AuthorizeAsync>d__4.MoveNext()
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
            at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
            at Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.<AuthorizeAsync>d__1.MoveNext()
       InnerException: 

void GoogleThread()
    {
        try
        {
            //Scopes for use with the Google Drive API
            string[] scopes = new string[] { 
                             DriveService.Scope.DriveFile};
            var clientId = "Create auth0 Id and copy here";      // From https://console.developers.google.com
            var clientSecret = "";          // From https://console.developers.google.com

            // here is where we Request the user to give us access, or use the Refresh Token that was previously stored in %AppData%
            GoogleWebAuthorizationBroker.Folder = "Drive.Sample";
            var credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets
            {
                ClientId = clientId,
                ClientSecret = clientSecret
            },

            scopes,
            "Admin",
            CancellationToken.None,
            new FileDataStore("Daimto.GoogleDrive.Auth.Store")).Result;

            var service = new DriveService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = "Drive API Sample",
            });

            uploadFile(service, "d:\\bmjo\\EastManTemp.xml", "0B1HV_LVO8x0zSWFrRkE2LVFUQ2c");

        }
        catch (Exception exp)
        {
            MessageBox.Show(exp.Message, "Error");
        }
    }
    // tries to figure out the mime type of the file.
    private static string GetMimeType(string fileName)
    {
        string mimeType = "application/unknown";
        string ext = System.IO.Path.GetExtension(fileName).ToLower();
        Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
        if (regKey != null && regKey.GetValue("Content Type") != null)
            mimeType = regKey.GetValue("Content Type").ToString();
        return mimeType;
    }
    public static File uploadFile(DriveService _service, string _uploadFile, string _parent)
    {

        if (System.IO.File.Exists(_uploadFile))
        {
            File body = new File();

            body.Title = System.IO.Path.GetFileName(_uploadFile);
            body.Description = "File uploaded by Diamto Drive Sample";
            body.MimeType = GetMimeType(_uploadFile);
            body.Parents = new List<ParentReference>();// { new ParentReference() { Id = _parent } };
            body.Parents.Add(new ParentReference() { Id = _parent });
            // File's content.
            byte[] byteArray = System.IO.File.ReadAllBytes(_uploadFile);
            System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
            try
            {
                FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, GetMimeType(_uploadFile));
                request.Upload();
                return request.ResponseBody;
            }
            catch (Exception e)
            {
                Console.WriteLine("An error occurred: " + e.Message);
                return null;
            }
        }
        else
        {
            Console.WriteLine("File does not exist: " + _uploadFile);
            return null;
        }

    }
    private void button1_Click(object sender, EventArgs e)
    {
        Thread thread = new Thread(new ThreadStart(GoogleThread));
        thread.Start();

    }