VB.net:提取和替换HTML的所有实例

I am working on manipulating/extracting data from well-formed HTML in one of our legacy systems. I need to use regex to parse the HTML, find certain patterns, extract the data, and return some modified HTML. I know that regex and HTML are never the answer but, given that I know exactly where the data is coming from and that the data is properly structure, I am confident that this will work for the particular situation.I am working on manipulating/extracting data fr