How do I know which are the first characters before "/"? asp.net vb.net -

i have string that:

dim temp string = "batch 634239100a/45 pcs booked out vladut moraru on 10/15/2015" 

or

dim temp string = "batch 322.3/4 pcs booked out vladut moraru on 10/15/2015" 

or

dim temp string = "batch 322/3/4 pcs booked out vladut moraru on 10/15/2015" 

i want display 322/3/

batch : 322/3/ pcs : 4 

i want display : 322/3/ of string

i thought i'd find 322/3/4 , give split after last / , find value before /, how?

the easiest thing use regularexpression, there limitations this, you're including date in string.

if numbers in format of nnn/nnn/nn and appear before date work...

dim regexmatch system.text.regularexpressions.match regexmatch = system.text.regularexpressions.regex.match(mystring, "(\d{3}/\d{3})/(\d{2})") if regexmatch.success     dim batch string = regexmatch.groups(1).value     dim pcs string = regexmatch.groups(2).value end if 

the regex (\d{3}/\d{3})/(\d{2}) breaks down as...

• ( create capture group
• \d{3} 3 numeric digits (0-9)
• / character
• \d{3} 3 numeric digits (0-9)
• ) close , store capture group
• / character
• ( create capture group
• \d{2} 2 numeric digits (0-9)
• ) close , store capture group

(note, in asp.net not required escape / character... in other regex parsers necessary.)

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if don't need pcs retrieved, remove 2nd capture group (so looks (\d{3}/\d{3})/\d{2})... need remove regexmatch.groups(2).value otherwise you'll exception.

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if need check variable number of digits use format of \d{3,5} mean minimum of 3 , maximum of 5 numeric digits.

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update - based on new information provided op.

use expression: "batch (.+)/(\d+) pcs"

regexmatch = system.text.regularexpressions.regex.match(mystring, "batch (.+)/(\d+) pcs",                 system.text.regularexpressions.regexoptions.ignorecase)