/// <summary>
/// Converts the SRC attribute of IMG tags into embedded content ids (cid).
/// Example: <img src="filename.jpg" /< becomes <img src="cid:unique-cid-jpg" /<
/// </summary>
private void ReplaceImgSrcByCid()
{
var fileList = new List <string>();
_tagHelper.TagName = "img";
foreach (var element in _tagHelper.StartTags)
{
var srcAttr = _tagHelper.GetAttributeValue(element, "src");
if (string.IsNullOrEmpty(srcAttr))
{
continue;
}
// this will succeed only with local files (at this time, they don't need to exist yet)
var filename = MakeFullPath(MakeLocalPath(srcAttr));
try
{
if (!fileList.Contains(filename))
{
var fileInfo = new FileInfo(filename);
var contentType = MimeTypes.GetMimeType(filename);
var cid = MimeUtils.GenerateMessageId();
InlineAtt.Add(new FileAttachment(filename, MakeCid(string.Empty, cid, new FileInfo(filename).Extension), contentType));
_tagHelper.ReplaceTag(element, _tagHelper.SetAttributeValue(element, "src", MakeCid("cid:", cid, fileInfo.Extension)));
fileList.Add(filename);
}
}
catch
{
BadInlineFiles.Add(filename);
continue;
}
}
}
/// <summary>
/// Converts the SRC attribute of IMG tags into embedded content ids (cid).
/// Example: <img src="filename.jpg" /< becomes <img src="cid:unique-cid-jpg" /<
/// </summary>
private void ReplaceImgSrcByCid()
{
var fileList = new Dictionary <string, string>();
foreach (var element in _htmlDocument.All.Where(m => m is IHtmlImageElement))
{
var img = (IHtmlImageElement)element;
var currSrc = img.Attributes["src"]?.Value?.Trim();
if (currSrc == null)
{
continue;
}
// replace any placeholders with variables
currSrc = _mailMergeMessage.SearchAndReplaceVars(currSrc, _dataItem);
// Note: if currSrc is a rooted path, _docBaseUrl will be ignored
var currSrcUri = new Uri(_docBaseUri, currSrc);
// img src is not a local file (e.g. starting with "http" or is embedded base64 image), or manually included cid reference
// so we just save the value with placeholders replaced
if (string.IsNullOrEmpty(currSrc) || (currSrcUri.Scheme != UriScheme.File) ||
currSrc.StartsWith("data:image", StringComparison.OrdinalIgnoreCase) || currSrc.StartsWith("cid:", StringComparison.OrdinalIgnoreCase))
{
// leave img.Attributes["src"].Value as it is
continue;
}
// this will succeed only with local files (at this time, they don't need to exist yet)
var filename = _mailMergeMessage.SearchAndReplaceVarsInFilename(currSrcUri.LocalPath, _dataItem);
try
{
if (!fileList.ContainsKey(filename))
{
var fileInfo = new FileInfo(filename);
var contentType = MimeTypes.GetMimeType(filename);
var cid = MimeUtils.GenerateMessageId();
InlineAtt.Add(new FileAttachment(fileInfo.FullName, MakeCid(string.Empty, cid, fileInfo.Extension), contentType));
img.Attributes["src"].Value = MakeCid("cid:", cid, fileInfo.Extension);
fileList.Add(fileInfo.FullName, cid);
}
else
{
var cidForExistingFile = fileList[filename];
var fileInfo = new FileInfo(filename);
img.Attributes["src"].Value = MakeCid("cid:", cidForExistingFile, fileInfo.Extension);
}
}
catch
{
BadInlineFiles.Add(filename);
continue;
}
}
}
/// <summary>
/// Converts the SRC attribute of IMG tags into embedded content ids (cid).
/// Example: <img src="filename.jpg" /< becomes <img src="cid:unique-cid-jpg" /<
/// </summary>
private void ReplaceImgSrcByCid()
{
var fileList = new HashSet <string>();
foreach (var element in _htmlDocument.All.Where(m => m is IHtmlImageElement))
{
var img = (IHtmlImageElement)element;
var currSrc = img.Attributes["src"]?.Value;
if (currSrc == null)
{
continue;
}
// replace any placeholders with variables
currSrc = _mailMergeMessage.SearchAndReplaceVars(currSrc, _dataItem);
// img scr is not a local file (e.g. starting with "http"), so we just save the value with placeholders replaced
if (!string.IsNullOrEmpty(currSrc) && !new Uri(MakeUri(currSrc)).IsFile)
{
img.Attributes["src"].Value = currSrc;
continue;
}
// this will succeed only with local files (at this time, they don't need to exist yet)
var filename = MakeFullPath(MakeLocalPath(currSrc));
try
{
if (!fileList.Contains(filename))
{
var fileInfo = new FileInfo(filename);
var contentType = MimeTypes.GetMimeType(filename);
var cid = MimeUtils.GenerateMessageId();
InlineAtt.Add(new FileAttachment(fileInfo.FullName, MakeCid(string.Empty, cid, fileInfo.Extension), contentType));
img.Attributes["src"].Value = MakeCid("cid:", cid, fileInfo.Extension);
fileList.Add(fileInfo.FullName);
}
}
catch
{
BadInlineFiles.Add(filename);
continue;
}
}
}
