c# – 如何使用EWS托管API保存ItemAttachments

发布时间：2020-12-15 08:35:40 所属栏目：百科来源：网络整理

导读：是否可以保存ItemAttachment？对于FileAttachment,我们使用以下EWS托管API代码进行保存, if(attachment is FileAttachment) { FileAttachment fAttachment = new FileAttachment(); fAttachment.Load("D:Stream" + fAttachment.Name); } 那么ItemAttachmen

是否可以保存ItemAttachment？对于FileAttachment,我们使用以下EWS托管API代码进行保存,

if(attachment is FileAttachment)
    {
      FileAttachment fAttachment = new FileAttachment();
      fAttachment.Load("D:Stream" + fAttachment.Name);
    }

那么ItemAttachment呢？我们如何在指定的文件中保存这样的ItemAttachment？

解决方法

当然这不是一个紧迫的问题,但我想我会分享给未来的人,就像我一样.

对于ItemAttachments,你需要加载项目的MimeContent,然后你可以简单地写入文件/输出[“.eml”,“.msg”]：

if (attachment is FileAttachment)
{
    FileAttachment fileAttachment = attachment as FileAttachment;

    // Load attachment contents into a file.
    fileAttachment.Load(<file path>);
}
else // Attachment is an ItemAttachment (Email)
{
    ItemAttachment itemAttachment = attachment as ItemAttachment;

    // Load Item with additionalProperties of MimeContent
    itemAttachment.Load(EmailMessageSchema.MimeContent);

    // MimeContent.Content will give you the byte[] for the ItemAttachment
    // Now all you have to do is write the byte[] to a file
    File.WriteAllBytes(<file path>,itemAttachment.Item.MimeContent.Content);
}

（编辑：李大同）

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