更新邮件项的 IsRead 属性时 Microsoft Graph API 中的 ErrorAccessDenied

Question

我们正在使用 microsoft graph api 来处理日历和邮件项目。我们从 Office 365 帐户中选择项目，处理该项目，然后我们将其标记为已读，然后我们删除该项目，以便它不会再次被处理。 在将项目标记为已读过程中，我们有以下方法

MarkReadMail()

{

var response = graphClient.Me.Messages[itemID].Request().Select("IsRead").GetAsync();

var msg = response.Result;

msg.IsRead = true;

graphClient.Me.Messages[itemID].Request().Select("IsRead").UpdateAsync(msg);

}

MarkReadMail() 可以正常使用 Office 365 商业基本帐户，但在客户端他们使用的是 Office 365 企业帐户，它给出以下错误：

Message: Exception occured in method MarkReadMail  :Code: ErrorAccessDenied
Message: Access is denied. Check credentials and try again.
Inner error
 Stack Trace:   at Microsoft.Graph.HttpProvider.<SendAsync>d__19.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 Microsoft.Graph.BaseRequest.<SendRequestAsync>d__36.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 Microsoft.Graph.BaseRequest.<SendAsync>d__32`1.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 Microsoft.Graph.MessageRequest.<UpdateAsync>d__8.MoveNext()

虽然，我们在两个帐户的委派权限下提供了Mail.ReadWrite 权限。

请提出建议。

Answer 1

您无法发布从 GET 收到的对象，因为它包含只读属性（即id）。您需要发布一个仅包含您希望更新的属性的新对象：

graphClient
  .Me
  .Messages["itemID"]
  .Request()
  .UpdateAsync(new Message(){ IsRead = true });