如何在< a>中获得第二个href链接使用vb.net标记 [英] How do I get the second href link in the <a> tag using vb.net

问题描述

HTML代码

 <   div     id   =  dl_link    style   =  display：block; >  
 <   a     href   =  / get？video_id = KMU0tzLwhbE& h = -1& r = -1.1     style   = < span class =code-keyword> display：none >  下载 <   / a  >  
  <   a     href   =  / get？ab = 128& video_id = KMU0tzLwhbE& h = f25a5baaa46941a22d89c09ee679a305& r = 1405000885751.1521813114 < span class =code-keyword>>  下载 <   / a  >  

所以我想要检索HTML代码中的第二个href链接（/get?ab=128&video_id=KMU0tzLwhbE&h=f25a5baaa46941a22d89c09ee679a305&r=1405000885751.1521813114）



目前我拥有的是这个

  Dim  link_label 作为 HtmlElement = WebBrowser 1.Document.GetElementById（  dl_link）
 
  Dim  linka  As  HtmlElement = link_label.GetElementsByTagName（  A）（ 0 ）
  Dim  link 作为 字符串 = linka.GetAttribute（  HREF）

但是只获得第一个href链接这不是我想要的，所以如何获得第二个？

解决方案

这不是最佳选择，但您可以尝试：



Dim linka As HtmlElement = link_label.GetElementsByTagName（A）（1）

如果代码不断更改不同位置，我该怎么办？网页？那我该怎么办？仅当该行文本每次都保留在同一位置时，才将0更改为1。 ：（

HTML Code

<div id="dl_link" style="display: block;">
<a href="/get?video_id=KMU0tzLwhbE&h=-1&r=-1.1" style="display:none">Download</a>
<a href="/get?ab=128&video_id=KMU0tzLwhbE&h=f25a5baaa46941a22d89c09ee679a305&r=1405000885751.1521813114">Download</a>

So I want to retrieve the second href link in the HTML code ("/get?ab=128&video_id=KMU0tzLwhbE&h=f25a5baaa46941a22d89c09ee679a305&r=1405000885751.1521813114")

Currently what I have is this

Dim link_label As HtmlElement = WebBrowser1.Document.GetElementById("dl_link")

Dim linka As HtmlElement = link_label.GetElementsByTagName("A")(0)    
Dim link As String = linka.GetAttribute("HREF")

but that only gets the first href link which is not what I want, so how do I get the second one?

解决方案

This is not optimal, but you could try:

Dim linka As HtmlElement = link_label.GetElementsByTagName("A")(1)

What would I have to do if the code keeps changing places on different pages? How would I do it then? Changing the 0 to a 1 only works if that line of text stays in the same place each time. :(

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