htmlagilitypack选择所有节点

问题描述

我有此代码

i have this code

Dim htmldoc As HtmlDocument = New HtmlDocument()
htmldoc.LoadHtml(strPageContent)
Dim root As HtmlNode = htmldoc.DocumentNode

For Each link As HtmlNode In root.SelectNodes("//a")
    If link.HasAttributes("href") Then doSomething() ''this doesn''t work because hasAttributes only checks whether an element has attributes or not
Next

但出现错误 Object reference not set to an instance of an object.

该文档包含至少一个锚标签?如何检查属性是否存在?

我尝试了这个link.HasAttributes("title")并遇到了另一个错误

Public ReadOnly Property HasAttributes() As Boolean'' has no parameters and its return type cannot be indexed.

Thanks

but am getting an error Object reference not set to an instance of an object.

the document contains at least one anchor-tag? how do i check if an attribute exits?

i tried this link.HasAttributes("title") and get another error

Public ReadOnly Property HasAttributes() As Boolean'' has no parameters and its return type cannot be indexed.

thanks

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