Microsoft Graph Rest API：如何在C#中从ItemAttachment获取MIME内容

Question

我如何从附加到C#电子邮件的ItemAttachment（消息）中获取MIME内容？

C#代码：

private async Task<ItemAttachment> GetItemAttachment(string id)
{
    ItemAttachment itemAttachment = null;

    var attachment = await GraphServiceClient
        .Users[CurrentUser.Id]
        .Messages[CurrentMessage.Id]
        .Attachments[id]
        .Content
        .Request()
        .GetAsync();

    itemAttachment = attachment as ItemAttachment;

    return itemAttachment;
}

在C#中获取附件的MIME内容的正确方法是什么？

Answer 1

C#缺少content属性。我不知道原因。

作为另一种选择，您可以尝试发送http请求并从响应中读取内容。

// create request url
var requestUrl = GraphServiceClient.Users[CurrentUser.Id].Messages[CurrentMessage.Id]
   .Attachments[id].AppendSegmentToRequestUrl("$value");
// create request
var hrm = new HttpRequestMessage(HttpMethod.Get, requestUrl);
// authenticate request
await client.AuthenticationProvider.AuthenticateRequestAsync(hrm);
// send request and read response
var response = await client.HttpProvider.SendAsync(hrm);
// read content
var content = await response.Content.ReadAsStringAsync();