How to find if an IP address falls in a range specified using a pattern? - ASP.NET -

if have ip address: 192.100.100.2 , need ensure falls within range specified using wildcard patterns.

the patterns can either:

  1. 192. *. *. *  2. *. *. *. *  3. 192.1**. *.2 

so essentially, asterisk or 3 asterisks specify valid range. there built in in asp.net can use validate ip address or more of custom validation?

as @atomerz said, convert patterns regular expressions:

    ''//patterns search     dim patterns() string = {"192.*.*.*", "*.*.*.*", "192.1**.*.2"}      ''//test ip     dim testip = "192.100.100.2"      ''//loop through each pattern     each p in patterns         ''//swap 2 asterisk 2 regex digits (\d\d) , 1 asterisk 1 or more digits. escape period         trace.writeline(system.text.regularexpressions.regex.ismatch(testip, p.replace("**", "\d\d").replace("*", "\d+").replace(".", "\.")))     next