public void SetTextContent(string text)
{
// encode CDATA end tags
text = text.Replace("]]>", "]]]]><![CDATA[>");
// strip invalid xml chars
text = XmlSanitizer.SanitizeXmlString(text).Replace("&", string.Empty);
text = System.Security.SecurityElement.Escape(text);
Content = "<pre>" + text + "</pre>";
}
public void AddAttachment(byte[] binaryData, string contentId, string contentType, string contentFileName)
{
byte[] hash = new MD5CryptoServiceProvider().ComputeHash(binaryData);
string hashHex = BitConverter.ToString(hash).Replace("-", string.Empty).ToLower();
string cid = string.Empty;
if (contentId != null)
{
cid = contentId.TrimStart('<', '"');
}
cid = cid.TrimEnd('>', '"');
if ((cid.Length > 0) && content.Contains(cid))
{
// convert the reference tag to a media tag
int idIndex = content.IndexOf(cid);
// go left until the '<' is found
int bracketIndex = content.LastIndexOf('<', idIndex);
int endBracket = content.IndexOf('>', bracketIndex);
string refTag = content.Substring(bracketIndex, endBracket - bracketIndex + 1);
int srcStart = refTag.ToLower().IndexOf("src=\"") + 4;
int srcEnd = refTag.IndexOf('"', srcStart + 1);
string srcString = refTag.Substring(srcStart, srcEnd - srcStart + 1);
string mediaTag = refTag.Replace("src=", "hash=");
mediaTag = mediaTag.Replace(srcString, '"' + hashHex + '"');
int imgStart = mediaTag.IndexOf('<') + 1;
int imgEnd = mediaTag.IndexOfAny(" \t".ToCharArray(), imgStart);
mediaTag = mediaTag.Remove(imgStart, imgEnd - imgStart);
mediaTag = mediaTag.Insert(imgStart, "en-media type=\"" + contentType.ToLower() + "\"");
Content = content.Replace(refTag, mediaTag);
}
else
{
// just link the attachment to the content
Content = content + "<en-media hash=\"" + hashHex + "\" type=\"" + contentType.ToLower() + "\"/>";
}
string attachmentString = Convert.ToBase64String(binaryData);
attachmentString = "<data encoding=\"base64\">" + attachmentString + "</data><mime>" + contentType.ToLower() + "</mime>" +
"<resource-attributes><file-name>" + XmlSanitizer.SanitizeXmlString(contentFileName).Replace("&", string.Empty) + "</file-name></resource-attributes>";
Attachment at = new Attachment();
at.Base64Data = attachmentString;
at.ContentID = contentId;
at.ContentType = contentType.ToLower();
at.FileName = contentFileName;
at.Hash = hashHex;
Attachments.Add(at);
}