String range in VB.NET with multiple occurrences

Question

I'm trying to accomplish something fairly simple in VB that I do everyday in JavaScript.

I need to parse text between two strings (HTML tags mainly) that have multiple occurrences.

Sample Data:

<tag>test</tag>
<tag>test2</tag>
<tag>test3</tag>

If I wanted to grab the data in the 2nd <tag> in JavaScript I would simply do this:

var result = string.split('<tag>')[2].split('</tag>')[0];

And the only way I seem to get that to work in VB looks like this...

Dim from = string.IndexOf("<tag>")
Dim [to] = string.IndexOf("</tag>", from)
Dim result = string.Substring(from + "<tag>".Length, [to] - from - "<tag>".Length)

Mind you that is only the first occurrence in VB and already the code looks ridiculous in comparison... I didn't even want to figure out the 2nd occurrence until I find out this is my only solution. Thanks

tzerb · Accepted Answer · 2012-05-04 23:26:24Z

2

You can do about the same thing in VB using the 'Split' method on the String.

    Dim sx As String = "<tag>test</tag> <tag>test2</tag> <tag>test3</tag> "
    Dim sp As String = sx.Split(New [String]() {"<tag>"}, StringSplitOptions.RemoveEmptyEntries)(1).Split(New [String]() {"</tag>"}, StringSplitOptions.RemoveEmptyEntries)(0)

edited May 4, 2012 at 23:26

answered May 4, 2012 at 23:14

tzerb

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2 Comments

bfritz Over a year ago

After your response I dug more into it... And turns out you are correct :) I was using the wrong "Split" function trying to use indexOf/Substring. Solution: Regex.Split(string, "<tag>")(1).Split("</tag>")(0)

bfritz Over a year ago

check my new issue with splitting here: stackoverflow.com/questions/10458032/…

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