访问SharePoint事件附件

Question

我有一个SharePoint日历事件，可以将任何类型的文件作为附件。有没有办法访问文件的内容/下载它们？我必须计算这些文件的校验和。

Answer 1

string siteURL = "http://yourserver/yourpathtothesite";
using (SPSite site = new SPSite(siteURL))
{
    using (SPWeb web = site.OpenWeb())
    {
        string listName = "Events";
        SPList calendarList = web.Lists[listName];

        // get whatever item you are interested in
        SPListItem item = calendarList.GetItemById(1);

        foreach (String attachmentname in item.Attachments)
        {
            String attachmentAbsoluteURL = item.Attachments.UrlPrefix + attachmentname;

            // To get the SPSile reference to the attachment just use this code
            SPFile attachmentFile = web.GetFile(attachmentAbsoluteURL);

            // To read the file content simply use this code
            Stream stream = attachmentFile.OpenBinaryStream();
            StreamReader reader = new StreamReader(stream);
            String fileContent = reader.ReadToEnd();
        }

    }
}

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