C# 注释'；Odata.context'；没有得到承认

通过Microsoft Graph Api访问电子邮件，我已向Message对象添加了单值属性。但是在执行SendMail查询时：

client.Users[MailBoxId].SendMail（message，true.Request（）.PostAsync（）它正在抛出一个错误，状态为-code:RequestBodyRead
消息：找到批注“odata.context”。当前位置无法识别或不需要此批注。
内部错误：
其他数据：
日期：2020-07-24T07:46:37
请求id:xxxx-xxx-xxx-xxx-xxxxx
客户ID:xxxx-xxx-xxx-xxx-xxxxx。
.
解决这一问题的任何线索都将非常有用。
首先使用AddAsync（）创建邮件草稿，然后使用SendMail（）.PostAsync（）发送邮件时遇到类似问题。这导致了以下例外情况：
消息：代码：RequestBodyRead消息：找到批注“odata.context”。当前位置无法识别或不需要此批注

我将SendMail（）.PostAsync（）替换为Send（）.PostAsync（），问题得到了解决。下面的代码片段

            //Construct the Email Message
            var emailMessage = new Message
            {
                Subject = emailSubject,
                Body = new ItemBody
                {
                    ContentType = BodyType.Html,
                    Content = emailBody
                },
                ToRecipients = toEmailList,
                CcRecipients = ccEmailList,
                BccRecipients = bccEmailList,

            };

            //Create a draft message
            var draftEmailMessage = await graphClient.Users[emailId].Messages
                    .Request()
                    .AddAsync(emailMessage);

            //Code to add attachments to the draft message
            ....

            //Send the email message
            // NOTE: This does NOT work, throws Odata.context error 
            /*
            await graphClient.Users[emailId].SendMail(draftEmailMessage, true)
                .Request()
                .PostAsync();
            */
            // NOTE: Replaced above commented code with this - works perfectly!
            await graphClient.Users[emailId].Messages[draftEmailMessage.Id].Send()
                .Request()
                .PostAsync();

首先使用AddAsync（）创建草稿邮件，然后使用SendMail（）发送邮件时遇到类似问题。PostAsync（）。这导致了以下例外情况：
消息：代码：RequestBodyRead消息：找到批注“odata.context”。当前位置无法识别或不需要此批注

我将SendMail（）.PostAsync（）替换为Send（）.PostAsync（），问题得到了解决。下面的代码片段

            //Construct the Email Message
            var emailMessage = new Message
            {
                Subject = emailSubject,
                Body = new ItemBody
                {
                    ContentType = BodyType.Html,
                    Content = emailBody
                },
                ToRecipients = toEmailList,
                CcRecipients = ccEmailList,
                BccRecipients = bccEmailList,

            };

            //Create a draft message
            var draftEmailMessage = await graphClient.Users[emailId].Messages
                    .Request()
                    .AddAsync(emailMessage);

            //Code to add attachments to the draft message
            ....

            //Send the email message
            // NOTE: This does NOT work, throws Odata.context error 
            /*
            await graphClient.Users[emailId].SendMail(draftEmailMessage, true)
                .Request()
                .PostAsync();
            */
            // NOTE: Replaced above commented code with this - works perfectly!
            await graphClient.Users[emailId].Messages[draftEmailMessage.Id].Send()
                .Request()
                .PostAsync();