.net - Matching numbers with regular expressions

i can't figure out how build regex illustration values:

123,456,789 -12,34 1234 -8

could help me?

if want allow digits , commas, ^[-,0-9]+$ regex. if want allow spaces, utilize ^[-,0-9 ]+$.

however, if want allow proper numbers, improve go this:

^([-+] ?)?[0-9]+(,[0-9]+)?$

or utilize .net's number parser (for various numberstyles, see msdn):

try {     double.parse(yourstring, numberstyle.number); } catch(formatexception ex) {     /* number not in accepted format */ }

.net regex numbers matching

Four