C# 获取消息id'；gmail的速度非常慢

我使用.net 4.5版创建了类库，语言是c#。仅从gmail API获取6封电子邮件需要几分钟以上的时间。 下面是我用来获取邮件详细信息的代码

public Message GetMailDetails(GmailService service, string EmailId, string MessageID)
{
            try
            {
                var a = service.Users.Messages.Get(EmailId, MessageID);
                a.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Metadata;
                var retMessage = a.Execute();


                //a.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Metadata;
                //retMessage = a.Execute();
                //a.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Minimal;
                //retMessage = a.Execute();
                //a.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Raw;
                //retMessage = a.Execute();
                return service.Users.Messages.Get(EmailId, MessageID).Execute();
            }
            catch (Exception e)
            {
                return null;
            }
 }

---

你可以做的是尝试使用一种叫做“最简单的测试方法”的东西，这是通过“尝试我”页面，你需要一个消息id来测试它

message.get的完整响应如下所示

{
  "id": "1742abfd3a4f1c5",
  "threadId": "1742a8c81816e51",
  "labelIds": [
    "CHAT"
  ],
  "snippet": "I'm surprised nobody questioned me when I said that the tag was 2 weeks old, but clearly has questions from longer than 2 weeks ago. {:",
  "payload": {
    "partId": "",
    "mimeType": "text/html",
    "filename": "",
    "headers": [
      {
        "name": "From",
        "value": "Axxxx"
      }
    ],
    "body": {
      "size": 139,
      "data": "SSYjMzk7bSBzdXJwcmlzZWQgbm9ib2R5IHF1ZXN0aW9uZWQgbWUgd2hlbiBJIHNhaWQgdGhhdCB0aGUgdGFnIHdhcyAyIHdlZWtzIG9sZCwgYFybHkgaGFzIHF1ZXN0aW9ucyBmcm9tIGxvbmdlciB0aGFuIDIgd2Vla3MgYWdvLiB7Og=="
    }
  },
  "sizeEstimate": 100,
  "historyId": "6172496",
  "internalDate": "1598445048740"
}

{
  "id": "1742abfd3a4f16c5",
  "threadId": "1742a8c181816e51"
}

通过将字段参数添加到request fields=id、threadid，响应如下所示

{
  "id": "1742abfd3a4f1c5",
  "threadId": "1742a8c81816e51",
  "labelIds": [
    "CHAT"
  ],
  "snippet": "I'm surprised nobody questioned me when I said that the tag was 2 weeks old, but clearly has questions from longer than 2 weeks ago. {:",
  "payload": {
    "partId": "",
    "mimeType": "text/html",
    "filename": "",
    "headers": [
      {
        "name": "From",
        "value": "Axxxx"
      }
    ],
    "body": {
      "size": 139,
      "data": "SSYjMzk7bSBzdXJwcmlzZWQgbm9ib2R5IHF1ZXN0aW9uZWQgbWUgd2hlbiBJIHNhaWQgdGhhdCB0aGUgdGFnIHdhcyAyIHdlZWtzIG9sZCwgYFybHkgaGFzIHF1ZXN0aW9ucyBmcm9tIGxvbmdlciB0aGFuIDIgd2Vla3MgYWdvLiB7Og=="
    }
  },
  "sizeEstimate": 100,
  "historyId": "6172496",
  "internalDate": "1598445048740"
}

{
  "id": "1742abfd3a4f16c5",
  "threadId": "1742a8c181816e51"
}

基本上，您只请求要查看的数据字段

例子

---

当您试图从数组或列表中选择内容时，字段可能会有点棘手。我真的建议您在“尝试我”中进行测试。

听起来您的internet连接有问题。不确定我们如何回答我看不出你发布的代码有什么问题。它可以是任何东西。你知道吗，我如何在这段代码中实现部分响应，以便只提取我需要的参数，不是提取所有数据？根据Gmail API，

list

返回资源只包含一个id和一个threadId-因此至少

list

调用没有返回所有数据。@Shubhamange尝试使用Fields参数，它将允许您限制响应。我添加了用于获取邮件详细信息的代码，可以吗帮助传递fields参数@DaImToi使其如下工作：a.Format=UsersResource.MessagesResource.GetRequest.FormatEnum.Metadata；列表标题=新列表（）；标题。添加（“日期”）；标题。添加（“主题”）；标题。添加（“Cc”）；标题。添加（“自”）；标题。添加（“密件抄送”）；标题。添加（“至”）；a、 MetadataHeaders=头；