public static string GetContentHtml(string html, string directory)
{
var document = new HtmlDocument();
document.LoadHtml(html);
var result = document.DocumentNode.SelectNodes("//img");
foreach (var img in result)
{
var src = img.GetAttributeValue("src", string.Empty);
if (!string.IsNullOrEmpty(src) && src.StartsWith("data:image"))
{
var f = ContentImageFile.Parse(src);
f.FileName = Path.Combine(directory, f.FileName);
File.WriteAllBytes(f.FileName, f.Content);
img.SetAttributeValue("src", f.FileName);
}
}
return(document.DocumentNode.InnerHtml);
}
public static ContentImageFile Parse(string img64)
{
ContentImageFile cmf = new ContentImageFile();
var temp = img64.Split(',');
cmf.Content = Convert.FromBase64String(temp[1]);
string ext = Base64ImageHelper.GetExtension(temp[0]);
if (string.IsNullOrEmpty(ext))
{
throw new Exception($"Format {temp[0]} not supported.");
}
cmf.FileName = Guid.NewGuid() + ext;
return(cmf);
}
