Microsoft.Graph 发送带附件的邮件

Question

using Microsoft.Graph
IMessageAttachmentsCollectionPage Message.Attachments

我似乎无法使用 FileAttachment.ContentBytes 中的任何 "ContentBytes"。

我的示例来自 Microsoft https://github.com/microsoftgraph/aspnet-snippets-sample。

// Create the message.
Message email = new Message
{
    Body = new ItemBody
    {
        Content = Resource.Prop_Body + guid,
        ContentType = BodyType.Text,
    },
    Subject = Resource.Prop_Subject + guid.Substring(0, 8),
    ToRecipients = recipients,
    HasAttachments = true,
    Attachments = new[]
        {
            new FileAttachment
            {
                ODataType = "#microsoft.graph.fileAttachment",
                ContentBytes = contentBytes,
                ContentType = contentType,
                ContentId = "testing",
                Name = "tesing.png"
            }
        }
};

Answer 1

如果没有看到请求中设置的内容、错误消息或 http 状态代码的踪迹，我不太确定这里到底发生了什么。我知道您无法设置 HasAttachments 属性，属性仅由服务设置。哦，这里的问题是您将 Message.Attachments 属性设置为 new[] 而不是 new MessageAttachmentsCollectionPage.话虽如此，我只是运行以下代码，它按预期工作，因此我们知道该服务将适用于这种情况。

        var message = await createEmail("Sent from the MailSendMailWithAttachment test.");

        var attachment = new FileAttachment();
        attachment.ODataType = "#microsoft.graph.fileAttachment";
        attachment.Name = "MyFileAttachment.txt";
        attachment.ContentBytes = Microsoft.Graph.Test.Properties.Resources.textfile;

        message.Attachments = new MessageAttachmentsCollectionPage();
        message.Attachments.Add(attachment);

        await graphClient.Me.SendMail(message, true).Request().PostAsync();

希望这对您有所帮助并节省您的时间。

更新： 这是使用 Microsoft.Graph.

Answer 2

使用上述 GitHub 中的示例已解决，请参见下文：

// Create the message with attachment.
byte[] contentBytes = System.IO.File.ReadAllBytes(@"C:\test\test.png");
string contentType = "image/png";
MessageAttachmentsCollectionPage attachments = new MessageAttachmentsCollectionPage();
attachments.Add(new FileAttachment
{
    ODataType = "#microsoft.graph.fileAttachment",
    ContentBytes = contentBytes,
    ContentType = contentType,
    ContentId = "testing",
    Name = "testing.png"
});
Message email = new Message
{
    Body = new ItemBody
    {
        Content = Resource.Prop_Body + guid,
        ContentType = BodyType.Text,
    },
    Subject = Resource.Prop_Subject + guid.Substring(0, 8),
    ToRecipients = recipients,
    Attachments = attachments
};

// Send the message.
await graphClient.Me.SendMail(email, true).Request().PostAsync();

Microsoft.Graph 发送带附件的邮件

Microsoft.Graph send mail with attachment

c#

microsoft-graph-api