I have recently started working on an old project which uses version 18.104.22.168 version of this library.
I restored the same package version and tried running the project. There is a part of code where it tries to find a index of a character in HtmlDocument which results in following error
"Method not found: 'Int32 HtmlAgility Pack.HtmlDocument.TextIndexOf(Char, Int32)'
So I think the method is deprecated. Any idea about this?