在两个标签之间获取内部文本,并将输出转换为两个标签 - VB.NET - HtmlAgilityPack

html html-agility-pack innertext vb.net

我试图搜索示例,但似乎没有任何工作。所以我正在使用HtmlAgilityPack,我想获得两个特定标签之间的内部文本。

例:

<br>Terms of Service<br></br>Developers<br>

我想获得的innerText其中第一<br><br>进入label1和第二</br><br>进入LABEL2

会是这样的

Label1.text =“服务条款”
Label2.text =“开发者”

我如何实现/做/得到这个? PS;我对HtmlAgilityPack不太熟悉,一个显示如何做到这一点的代码会做得更好。 :-)

谢谢

一般承认的答案

这有点脏,但应该工作。

Imports System.Text.RegularExpressions

  Dim mystring As String = "<br>Terms of Service<br></br>Developers<br>"

    Dim pattern1 As String = "(?<=<br>)(.*?)(?=<br>)"
    Dim pattern2 As String = "(?<=</br>)(.*)(?=<br>)"

    Dim m1 As MatchCollection = Regex.Matches(mystring, pattern1)
    Dim m2 As MatchCollection = Regex.Matches(mystring, pattern2)
    MsgBox(m1(0).ToString)
    MsgBox(m2(0).ToString)

热门答案

简短的回答是HAP不太适合完成您的任务。我的笔记如下:

Imports HtmlAgilityPack

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim mystring As String = "<BR>Terms of Service<BR></BR>Developers<BR>"
        Dim myDoc As HtmlAgilityPack.HtmlDocument = New HtmlAgilityPack.HtmlDocument
        myDoc.LoadHtml(mystring)
        ' here we notice HAP immediately discards the junk tag </br>
        MsgBox(myDoc.DocumentNode.OuterHtml)

        ' Below we notice that HAP did not close the BR tag because it only 
        ' attempts to close 
        ' certain nested tags associated with tables ( th, tr, td) and lists 
        ' ( li ). 
        ' if this was a supported tag that HAP could fix, the fixed output 
        ' would be as follows: 
        ' <br>Terms of Service<br></br>Developers<br></br></br>
        ' this string would be parsed as if the last tag closes the first 
        ' and each set of 
        ' inner tags close themselves without any text between them. 
        ' This means even if you changed BR to TD, or some other tag HAP 
        ' fixes nesting on, it 
        ' still would not help to parse this correctly.  
        ' Also HAP does not appear to support XHTML in this .net 2.0 version.  

        myDoc.OptionFixNestedTags = True
        MsgBox(myDoc.DocumentNode.OuterHtml)

        ' here we put the BR tag into a collection.  as it iterates through 
        ' the tags we notice there is no inner text on the BR tag, presumably 
        ' because of two reasons.  
        ' 1. HAP will not close a BR.  
        ' 2. It does not fix your broken nested tags as you expect or required.  

        Dim myBR As HtmlNodeCollection = myDoc.DocumentNode.SelectNodes("//BR")
        If Not myBR Is Nothing Then
            For Each br In myBR
                MsgBox(br.InnerText)
            Next
        End If
    End Sub

End Class


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不隶属于 Stack Overflow
这个KB合法吗? 是的,了解原因
许可下: CC-BY-SA with attribution
不隶属于 Stack Overflow
这个KB合法吗? 是的,了解原因