HTML sanitization, limit amount of images

Question

In recieiving html input from a user(rich text editor) , I would like to limit the amount of images they have submitted. Is there a way to allow the first few images and then remove the rest?

The images are in the form

  <img src="">

Please Refer: http://stackoverflow.com/questions/9813556/count-and-limit-the-number-of-files-uploaded-html-file-input — Jatin, Jan 20 '15 at 21:07
Oh I should clarify, I'm not allowing users to upload pictures. They are in the form , the other post doesn't help me. Please re open the question — user3591017, Jan 20 '15 at 21:15

score 3 · Accepted Answer · answered Jan 20 '15 at 21:18

3

If you are looking to do this server side, use the HTMLAgilityPack. You can give it the HTML content and query this, in your case you'd want a list of all html images. Using this list, you could verify the count, remove elements etc. Example(using links, not images in this sample of code):

 HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
 TextReader TR= new StringReader(SomeText);
 doc.Load(TR);
 HtmlNodeCollection collection = doc.DocumentNode.SelectNodes("//a[@href]");

answered Jan 20 '15 at 21:18

jayess

56
2

Thanks! Can I use that to verify the number of plaintext characters as well? – user3591017 Jan 20 '15 at 21:34
Oh also, do you know how to limit the number of new lines? – user3591017 Jan 20 '15 at 21:35
For plain text, I would use regex to remove all HTML, then get the length of the string.Something like : Regex.Replace(SomeString, "<.*?>", String.Empty); – jayess Jan 20 '15 at 21:37

HTML sanitization, limit amount of images

1 Answers1