ContentId

string System.Net.Mail.AttachmentBase.ContentId

getsetinherited

Definition at line 28 of file AttachmentBase.cs.

    {
        get
        {
            string contentID = _part.ContentID;
            if (string.IsNullOrEmpty(contentID))
            {
                return ContentId = Guid.NewGuid().ToString();
            }
            if (contentID.Length >= 2 && contentID[0] == '<' && contentID[contentID.Length - 1] == '>')
            {
                return contentID.Substring(1, contentID.Length - 2);
            }
            return contentID;
        }
        [param: AllowNull]
        set
        {
            if (string.IsNullOrEmpty(value))
            {
                _part.ContentID = null;
                return;
            }
            if (value.IndexOfAny(s_contentCIDInvalidChars) != -1)
            {
                throw new ArgumentException(System.SR.MailHeaderInvalidCID, "value");
            }
            _part.ContentID = "<" + value + ">";
        }
    }