Getting specific data from HTML source and showing it in a label
Question
I want to extract specific values from a website that shows me progress within a game, to show them in a vb.net application for easier access. The HTML code I would like to get the data from is:
<div id="freemodeRank" class="page-section clearfix">
<div class="rankHex right-grad bronze">
<h3 style="font-size:54px">225</h3>
<p style="text-align:center;"></p>
</div>
<div class="rankXP">
<div class="clearfix">
<h3 class="left">5.6M<span> RP</span></h3>
</div>
<div class="rankBar">
<h4>Play Time: 58d 4h 23m</h4>
The data I would like to get from this code are:
"225", "5.6M" and "Play Time: 58d 4h 23m"
Any help would be great.
2 answers
solution1
0 2016-07-17 03:01:24
You can use a GetBetween function to help you with this.
Public Function GetBetween(ByRef sSearch As String, ByRef sStart As String, ByRef sStop As String, _
Optional ByRef lSearch As Long = 1) As String
lSearch = InStr(lSearch, sSearch, sStart)
If lSearch > 0 Then
lSearch = lSearch + Len(sStart)
Dim lTemp As Long
lTemp = InStr(lSearch, sSearch, sStop)
If lTemp > lSearch Then
GetBetween = Mid$(sSearch, lSearch, lTemp - lSearch)
End If
End If
End Function
Source: http://www.devx.com/tips/Tip/40934
You can call it like this
'Assuming htmlData is the variable where your html string is stored
Dim rpAmount As String = GetBetween(htmlData, "<h3 class=""left"">", "<span> RP</span></h3>")
The same applies the rest of the values you want to scrape
solution2
0 2016-07-17 08:14:40
HTML is Xml . Use XDocument class for getting your data. XDocument Class
Dim html As String = "<html><div id=""freemodeRank""><h3>255</h3></div></html>"
Dim document As XDocument = XDocument.Parse(html)
Dim value As String = document.Root...
<div>.
Where(Function(div) div.@id.Value.Equals("freemodeRank")).
<h3>.
First().
Value
XML Axis Properties (Visual Basic)
LINQ to XML without axis properties
Dim value As String =
document.Root.
Descendants("div").
Where(Function(div) div.Attribute("id").Value.Equals("freemodeRank")).
Element("h3").
Value
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