Get a specific option in HtmlAgilityPack?

问题

is possible get with HtmlAgilityPack a specific option? For example I've a select like this:

<select id="foo">
   <option value="0">1</option>
   <option value="1" selected="selected">2</option> 
</selected>

I need to get the option with selected. I know how to get the option with:

doc.DocumentNode.SelectNodes("//select[@id='foo']//option");

回答1:

This should work:

doc.DocumentNode.SelectNodes("//select[@id='foo']/option[@selected='selected']");

You can read more about xpath here

回答2:

doc.DocumentNode.SelectSingleNode("//Select[@id='foo']//*[@selected='selected']");

This should work but its giving a wider birth to get it by attempting to get the first node it finds of any Tag type at any depth within the select Tag that has a selected Attribute of selected value.

来源：https://stackoverflow.com/questions/46590811/get-a-specific-option-in-htmlagilitypack