getting a string between 2 strings

Question

i have the following string

sa=t&rct=j&q=&esrc=s&source=productsearch&cd=1&cad=rja&docid=10829621560421678006&ved=0CDEQ9gIwAA&url=http%3A%2F%2Fwww

i would like to parse this part out 10829621560421678006

i am thinking about writing a function that returns the string between 2 specified strings which are in this case &docid= and &ved=

any suggestions or a better solution?, note that i can't use split since the string structure will differ from time to time, my reference to this number are those 2 strings &docid= and &ved=

also is it possible to use regualr expression?

Steve · Accepted Answer · 2012-11-04 22:07:38Z

3

You could use Strings.Split Method for this:

Dim extracted As String = Split(Split(sourcestring, "&docid=")(1), "&ved=")(0)

answered Nov 4, 2012 at 22:07

Steve

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1 Comment

Esraa_92 Over a year ago

Thank you for your answer, your answer is the best for my case ;-D

Rahul Tripathi · Accepted Answer · 2012-11-04 07:02:15Z

1

You can try something like this:-

 Dim startIndex As Integer = temp.IndexOf("&docid=") + 20
 Dim endIndex As Integer = temp.IndexOf("&ved=", startIndex)
 Dim extraction As String = temp.Substring(startIndex, endIndex - startIndex).Trim

and if you want to use Regex then you can simply try this:-

 docid=(.*?)&ved

edited Nov 4, 2012 at 7:02

answered Nov 4, 2012 at 6:57

Rahul Tripathi

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Comments

Srinivas · Accepted Answer · 2012-11-04 06:52:30Z

1

Very simple and effective is this regex.

docid=(.*?)&ved

Result:

$matches Array:
(
    [0] => Array
        (
            [0] => docid=10829621560421678006&ved
        )

    [1] => Array
        (
            [0] => 10829621560421678006
        )

)

answered Nov 4, 2012 at 6:52

Srinivas

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Enigmativity · Accepted Answer · 2012-11-04 07:16:21Z

1

You could use LINQ like this:

var docid = 
    text
        .Split('&')
        .Select(x => x.Split('='))
        .Where(x => x[0] == "docid")
        .Select(x => x[1])
        .First();

answered Nov 4, 2012 at 7:16

Enigmativity

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