c# - How to use Html Agility Pack for HTML validations -


i using html agility pack validating html. below using,

public class markuperrors {     public string errorcode { get; set; }     public string errorreason { get; set; } }  public static list<markuperrors> ismarkupvalid(string html) {     var document = new htmlagilitypack.htmldocument();     document.optionfixnestedtags = true;     document.loadhtml(html);      var parsererrors = new list<markuperrors>();     foreach(var error in document.parseerrors)     {         parsererrors.add(new markuperrors                              {                                  errorcode = error.code.tostring(),                                  errorreason = error.reason                              });     }      return parsererrors; }

so input 1 shown below : 

<h1>test</h1>  hello world</h2>  <h3>missing close h3 tag

so current function return list of following errors 

- start tag <h2> not found - end tag </h3> not found

which fine...

my problem want entire html valid, proper <head> , <body> tags, because html later available preview, download .html files.

so wondering if check using html agility pack ?

any ideas or other options appreciated. thanks

you can check there head element or body element under html element example:

bool hashead = doc.documentnode.selectsinglenode("html/head") != null; bool hasbody = doc.documentnode.selectsinglenode("html/body") != null;

these fail if there no html element, or if there no body element under html element.

note don't use kind of xpath expression "//head" because give result if head not directly under html element.


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