Why won't this Regex match in C# console, but yet matches in http://gskinner.com/RegExr/ -

given code:

    class program     {         static void main(string[] args)         {             var input = @"<rets replycode='0' replytext='v2.7.0 2235: success'> <count records='35' /> <delimiter value = '09'/> <columns>   propobjectkey   propmediakey    propmediatype   propmediaexternalkey    propitemnumber  propmediadisplayorder   propmediasize   propmimetype    propmediabytes  propmediafilename   propmediacaption    propmediadescription    propmediaurl    propmediacreatedtimestamp   propmediamodificationtimestamp  county  propmediasystemlocale   propmediasubsystemlocale    uniqueid    listingid   propertytype    propmediapixellength    propmediapixelwidth </columns> <data>  98317611445 98317632498 50000967225     31  31  50045650613 10000000378 77466   db          http://example.com/image/v2/1/yismirdzpzraa785vjagk9b6hz39r15uf8fhs6znryqlhh5oxnifwcpwucd464mb_qolrocd0mzi3tcxxf7-otxuyl_nn4cpoxbmfi2_nsjfjolvl3rzisfnyeriy0pq.jpg  2013-07-26 18:35:58 2013-08-12 10:47:11 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/yismirdzpzraa785vjagk9b6hz39r15uf8fhs6znryqlhh5oxnifwcpwucd464mb_qolrocd0mzi3tcxxf7-otxuyl_nn4cpoxbmfi2_nsjfjolvl3rzisfnyeriy0pq.jpg  http://example.com/image/v2/1/ehnqsrrggczywpkih-knsvh5oqhftnlatrtfleeslxaauz6x77etmx6d_cuoajkdpnc6m6fuwhovo_myvmgaeo4d12sdzd6lw51yvikilog-n5sctkxfeag0ikupa9yw.jpg  http://example.com/image/v2/1/1duvzd5xkhtx-dh7mc9ffzxxxqpo07ot1xanotj98x78vctr-xjpvk7meyov6cv-8v1a94zi0qxkwmwguhn-bujo3bfzyhopcfryg0jjfxp6c5tvd2v4mngsxkeen41j.jpg  </data> <data>  98317611445 98317632499 50000967225     32  32  50045650613 10000000378 74181   db          http://example.com/image/v2/1/djtc-pgijpqbccjqppionl5_tkk3xiszta952j7z8qyb34o_ace_lnva2dcqw7_ckn7ayw526olc5ntudxwethllzn4kthkelruvnixwtjmviis0abk_9mq0ivcbcibt.jpg  2013-07-26 18:35:59 2013-08-12 10:47:12 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/djtc-pgijpqbccjqppionl5_tkk3xiszta952j7z8qyb34o_ace_lnva2dcqw7_ckn7ayw526olc5ntudxwethllzn4kthkelruvnixwtjmviis0abk_9mq0ivcbcibt.jpg  http://example.com/image/v2/1/2fhcuza48cok9hoqh4cdf5-3ejzjbtsi3e-7b8myysjacdc1ztsfoxwqcrlrdaupgew5hqzcx0fhfevrgp8iva-ffx6ugkfomwn92ivxrpln5cfl4rsquq3texz66scx.jpg  http://example.com/image/v2/1/hxjn_easgtbsslmq4yecrkxfur5p6wugy1wmslhset3windfmbiumidzgz2yxfkeihajwuqpq-bk8x9hs6d2hgkl2d0djica3241qr9wrxxhcluycixzmaqnr-zaym26.jpg  </data> <data>  98317611445 98317632500 50000967225     33  33  50045650613 10000000378 82152   db          http://example.com/image/v2/1/57xhkhi-9oi3prb8ijukporjnjtd4vm2hsfwggpccetf6qgeig7713mlwuvkxvu8yxnpewinp9ujtaxnb5rvlxup0ff6l9izd8pr8eij_gm6ue98-pf_9mfkmk78zzay.jpg  2013-07-26 18:35:59 2013-08-12 10:47:12 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/57xhkhi-9oi3prb8ijukporjnjtd4vm2hsfwggpccetf6qgeig7713mlwuvkxvu8yxnpewinp9ujtaxnb5rvlxup0ff6l9izd8pr8eij_gm6ue98-pf_9mfkmk78zzay.jpg  http://example.com/image/v2/1/z3dgckx0tok_kn43lwzrvbuh5ofqkzjp2uneqwonrjt0hkcrj28wdjrihsxbvdcjembfs8udghzr9cl-u49rrps3ihtfznxmsncn2ryh4utxd2_nfl9ufilxaoufeku4.jpg  http://example.com/image/v2/1/-u2uba04qipggupnh5c1truhkgq4phzi07s8cxgqa8a7wojow_0livzafylmbc-f7mrb7duxuzjrhozbgckqjaar-byhxca0fbxzgiyfubzgucsx9rxavnu6el89hfac.jpg  </data> <data>  98317611445 98317632501 50000967225     34  34  50045650613 10000000378 68352   db          http://example.com/image/v2/1/gy_sjvawclkwsndpfwwjzeyy8cxekk11j-xrx1ub5llez3xh9us6kllcvx82uyfgidbqu7qa-4mxuy5j2ajimwajmdrk8fqj4yefstbr54vwexix1hwx2qhlw5qyau3b.jpg  2013-07-26 18:35:59 2013-08-12 10:47:13 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/gy_sjvawclkwsndpfwwjzeyy8cxekk11j-xrx1ub5llez3xh9us6kllcvx82uyfgidbqu7qa-4mxuy5j2ajimwajmdrk8fqj4yefstbr54vwexix1hwx2qhlw5qyau3b.jpg  http://example.com/image/v2/1/yqcjlrmcjmmadvdlxnvplr72n-5ohin23tnp4_1j6xosyetswvkmlzdqssvpcuwfo_z_k9ix4evm21jzlh5ehyncaji8dihgqsuv9qievelzai2jxipmcwjkytiextfb.jpg  http://example.com/image/v2/1/xw1tcp1jaxndym2bcxg_msid6qwltvify-8q6immf97klnm1lnu0le3xhtyalwbutetwqim2egoerv7a2ni98tdndf-xgzejzmgbemw5tlj0rvdf0gondjguxbknd6wj.jpg  </data> <data>  98317611445 98317632502 50000967225     35  35  50045650613 10000000378 54611   db          http://example.com/image/v2/1/53g6bscayoou_lkzrxmumsmfcrqjeeklsrsb6e3hxavyfund6bx9lcm2gxogrj9zlkpb0vq4nwvg9mpftafarumo6gnvcx3ggtajlvqm-owjfnpertwbyxlll1ocuiiz.jpg  2013-07-26 18:36:00 2013-08-12 10:47:14 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/53g6bscayoou_lkzrxmumsmfcrqjeeklsrsb6e3hxavyfund6bx9lcm2gxogrj9zlkpb0vq4nwvg9mpftafarumo6gnvcx3ggtajlvqm-owjfnpertwbyxlll1ocuiiz.jpg  http://example.com/image/v2/1/d3hvwan9qsfb8wwsopwuhkqj57wijxyyxu-vmwxduiqkcsngbor-e_yvzelnwnoirlmt75rarvslf9b2_2otri5hcbumi01s3bm3gcu6cwlyr6pjjntdalpxzue-hrqc.jpg  http://example.com/image/v2/1/ydiptlnodshmrodjwphpi3x1h_ea83meesr9xrsz6p-rjhxg9v3zf4mm6ras0oev7lbwuuvysuzx5opw7vnsvahwkpqqgaiv86h6u2h7o7pjlwn-qwqx6rafcnuruc7c.jpg  </data> <data>  98317611445 98317632508 50000967225     10  10  50045650613 10000000378 41504   db          http://example.com/image/v2/1/dgenrv2sonvqvp51iu0_qf29eohgqtaseuhkcckhzgazhl5fe9fhonlszugxm_fftw6u3-s92fdljzz3kimmsruumdsjsjm7-ypyihg2-lwxvwfdrg-0nrhv2ybhgk41.jpg  2013-07-26 18:36:01 2013-08-12 10:47:15 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/dgenrv2sonvqvp51iu0_qf29eohgqtaseuhkcckhzgazhl5fe9fhonlszugxm_fftw6u3-s92fdljzz3kimmsruumdsjsjm7-ypyihg2-lwxvwfdrg-0nrhv2ybhgk41.jpg  http://example.com/image/v2/1/skjjsz-efbdi_igvwgez-s4ls_fsjtjmzdiw8jggt6tz4xilvgdwolbzydfrssufebrlr30ggjicrfmihb4vrmkx-mibpdnb3aph_berfr0ogev4xq9hew5dmil2qtja.jpg  http://example.com/image/v2/1/gg8m_nfiageiq85nbwkn_b3r2pt5hw4ksm7ux8z_ksehse0f29gqxmvyklilhcdfh83ra_zyf19jxtaqgmsfw9dn_zbwdfdzro7wtjtgmv64woy2f6co6txug3bfabum.jpg  </data> <data>  98317611445 98317632509 50000967225     11  11  50045650613 10000000378 39169   db          http://example.com/image/v2/1/f1v7d6rouuit7nvhvsoxlfed8anyp_ks82o1xnqv3oaobtf3qpujkbd5c2yguxhexxcmxqtwzk6oaxgscdoilt12idf39teav46kuczmgfoeaip0rsjczg1dszkqfhir.jpg  2013-07-26 18:36:01 2013-08-12 10:47:15 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/f1v7d6rouuit7nvhvsoxlfed8anyp_ks82o1xnqv3oaobtf3qpujkbd5c2yguxhexxcmxqtwzk6oaxgscdoilt12idf39teav46kuczmgfoeaip0rsjczg1dszkqfhir.jpg  http://example.com/image/v2/1/ouwxhfbm_aq9lyyoe4oo3yy9dnmyrze1x2ciwvoxz6nyrgqqgik7bp8oqqht5vy22lau53yttsfhdpllrjbwkkvncwzlalvsfrqi1mblr1ug-axhedllzg4beqkrldva.jpg  http://example.com/image/v2/1/rr7x2rsmiyqvgich3kit9aw51rgbuykykqufrawihpwzsf-tu9rebbbpb2mhzy4ivl5tlgpxjqi3g6a2qsa4ao4vjwyl_ymdqi8lrj-bhx_ryhubdbtnjjzff1b5scsb.jpg  </data> <data>  98317611445 98317632510 50000967225     12  12  50045650613 10000000378 36537   db          http://example.com/image/v2/1/7d5jytf8acdsibjhdcsene4wkhhs-opfv9sjwus3lzdclnocv3nlibsn6az7ziz_siw1q1-03-ezes68qd3wfuwihv_alvd0awhubzicad9bsuc-ij82jv3nz2bjccif.jpg  2013-07-26 18:36:02 2013-08-12 10:47:16 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/7d5jytf8acdsibjhdcsene4wkhhs-opfv9sjwus3lzdclnocv3nlibsn6az7ziz_siw1q1-03-ezes68qd3wfuwihv_alvd0awhubzicad9bsuc-ij82jv3nz2bjccif.jpg  http://example.com/image/v2/1/np7zn9mhxtfrokscvxhakfmlbfvdjopx0exjeemns87lf66rf3lq4dpwmfjkedpwzpub7y7otbxgig-aivkml8ur6mfqimb28tdrda93fyqw0xv-neiydyzgjacfazli.jpg  http://example.com/image/v2/1/gjdcufhwdgo0hhd28zdfdtvdgcsovmvasnlsfi1tmf3ucvpehr-0uxteje956i8kz2sq4pmnwo4xjbeus9yisprmfcwjirqht9tylda08tnkgylgihwtlomzb1ox6sbz.jpg  </data> <data>  98317611445 98317632511 50000967225     13  13  50045650613 10000000378 27721   db          http://example.com/image/v2/1/oujynz2fnbkanf-tfdheio7ewrmqcf7p_4-yfagul4tz_pd2krpgw7mromjibyfqimnhtmytbmmijloyyowd5hbmj6l40vlnshcliagxfzimwjpq7t_cypec2f43om_m.jpg  2013-07-26 18:36:02 2013-08-12 10:47:16 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/oujynz2fnbkanf-tfdheio7ewrmqcf7p_4-yfagul4tz_pd2krpgw7mromjibyfqimnhtmytbmmijloyyowd5hbmj6l40vlnshcliagxfzimwjpq7t_cypec2f43om_m.jpg  http://example.com/image/v2/1/tatqbtddp63q7w0ab-a-3qzwahwf0byrwlfacluti7t5kmtzop8lkdsba7dh_01iucng39jjuvvsbyaammhye4k_1s48aojlxvmc_4j20ogtnc2ykbhefxqsz5pytesf.jpg  http://example.com/image/v2/1/w7hoajwektvkz2vqvxol-iwttthgxxu1vyijsffxf3mauafz0euvgmcfaexbp9kmhsqcbjhftigwb4jrayoshpfglufobagywqicyjcss32ovcrlctxvnxmyfhwhogrh.jpg  </data> <data>  98317611445 98317632512 50000967225     26  26  50045650613 10000000378 68994   db          http://example.com/image/v2/1/p7lxqiiz7nprs94tkm7oqyby5usa40irtet24w23pbg8uqja462fxuhrxmpmpiseiswpuxoatqmxoback_ddaajuhi-quuaa9aufmssn7qrwt_21ibqwkxtw3gqbx-ou.jpg  2013-07-26 18:36:02 2013-08-12 10:47:16 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/p7lxqiiz7nprs94tkm7oqyby5usa40irtet24w23pbg8uqja462fxuhrxmpmpiseiswpuxoatqmxoback_ddaajuhi-quuaa9aufmssn7qrwt_21ibqwkxtw3gqbx-ou.jpg  http://example.com/image/v2/1/-me9ygso7o--nz7pqgwd68trsrucbg6o8nxmt4icd0r4ckukridron4tvxdiugy1a3zqosafyizb-aipxwx-k2ghaclhlt6ufzs9guwcmzcwil_hymrrkbsh7y-lfy__.jpg  http://example.com/image/v2/1/854kang4hpkn8hxro4kajxilqvdcr_forcwf9x3y8axlz9cto7lwl7dk7ogzjf0yyjek9rld8w4dvgnc7uxvzue08wltbik8drarxili2ntzmzwhhlbko39ktwbesahf.jpg  </data> <data>  98317611445 98317632513 50000967225     27  27  50045650613 10000000378 74014   db          http://example.com/image/v2/1/zpl5by93uehharxb9lmg-4ysxwmm0f2tbdkbiypqetsmy1wnqzncfrlgqnepcgdfgx4hi5ak6fpruvhh_cstfhzj7bm8dtb_w_8a-48iw3be7oinfmzzne6m1ej6oopi.jpg  2013-07-26 18:36:02 2013-08-12 10:47:17 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/zpl5by93uehharxb9lmg-4ysxwmm0f2tbdkbiypqetsmy1wnqzncfrlgqnepcgdfgx4hi5ak6fpruvhh_cstfhzj7bm8dtb_w_8a-48iw3be7oinfmzzne6m1ej6oopi.jpg  http://example.com/image/v2/1/piem-nf1n_gsccmd9uwjlra1fyxzuarbjbx5u2kxwg7d_whgny_bwamxwujhpom6do5kpq_co1niam_cpkorqa_d_vgyevidw13rk54rmeo2c-62yo4fsbbsezrwvngt.jpg  http://example.com/image/v2/1/oc5s49-ssh0kcsouyw0sgg1weheoosnjk0ctv-vl-fpp9nmuoktui7viev_sf7bnbvyv-gbkrfdpx5pu8vntkx-5awgu4axjysq56crnezhveodmokdq-8tqbotc79yc.jpg  </data> <data>  98317611445 98317632514 50000967225     28  28  50045650613 10000000378 56540   db          http://example.com/image/v2/1/h9nphdi9rtfahd42cksmlybpaom3bbguhlkmtr9kztydqeqcq3uao4nbmauoh-miaj9_u_haqlicskyflve2begmvtujpeijmnioommiikpjwxd46knamfs-yvkgrnvr.jpg  2013-07-26 18:36:03 2013-08-12 10:47:10 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/h9nphdi9rtfahd42cksmlybpaom3bbguhlkmtr9kztydqeqcq3uao4nbmauoh-miaj9_u_haqlicskyflve2begmvtujpeijmnioommiikpjwxd46knamfs-yvkgrnvr.jpg  http://example.com/image/v2/1/bflmq3zb4jmdmueic-jszdcgoqr_g912xtrophrf9shsssqzrmmvxthitogexxzphl8zbr3rtpqv3ieebo6pauhlsi2eli0qvslpnqyf6ddepgqqiymuwevlyrlap57i.jpg  http://example.com/image/v2/1/jf2gst1zid73d1bhwybztmjhp3hgahxo1ar1lhq3tfmbiuforfulor1hk_nhydnldkz_muzzgybdvk1hopkkqgpjfuvpbmycixwmbke3jivvq40mnyszkvme9twbdn2q.jpg  </data> <data>  98317611445 98317632515 50000967225     29  29  50045650613 10000000378 76557   db          http://example.com/image/v2/1/ppvw4bglffiu6mkscypejvbvxumpfncz5vtti4zihexxqlkfosmq4lirpnrl5ndiz24pvkme7d3vhak-qmep3jucp_pej-hunlkiqchyvk7kbtjrs7fxwqrkjipto4l8.jpg  2013-07-26 18:36:03 2013-08-12 10:47:10 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/ppvw4bglffiu6mkscypejvbvxumpfncz5vtti4zihexxqlkfosmq4lirpnrl5ndiz24pvkme7d3vhak-qmep3jucp_pej-hunlkiqchyvk7kbtjrs7fxwqrkjipto4l8.jpg  http://example.com/image/v2/1/njbr-p1mlem8dt-laofv7bogk2uxaibr7uo5u9zfa25prrxx9bblusl4grtu_wb3mwpnwuxzlhfrn0punay2pchik_4l9jcl0tmvqm1jlik_jwgavbh-c2gg2q47dieq.jpg  http://example.com/image/v2/1/ut-0ekcagkh47e3v3kkp3hoyegjiahaecjypa6fzxf11prkgtpxttfbm53g3xaqyhwtwoxh7f_uv8h3jduxmk0i9wq35qz_giir3l_55ypnkihoavl8pfxwo14pi8yph.jpg  </data> <data>  98317611445 98317632516 50000967225     30  30  50045650613 10000000378 43106   db          http://example.com/image/v2/1/_zgvt5uxrxqveqa78hl1cqaz6yj6eabe4habzxh_mjn3ampfwwexvkdepbvpagankmwkuddk27hphwzfz0quskftmtnhtqznbykiyub4zmqyy5xx9ac9fv1rkonwhzza.jpg  2013-07-26 18:36:03 2013-08-12 10:47:11 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/_zgvt5uxrxqveqa78hl1cqaz6yj6eabe4habzxh_mjn3ampfwwexvkdepbvpagankmwkuddk27hphwzfz0quskftmtnhtqznbykiyub4zmqyy5xx9ac9fv1rkonwhzza.jpg  http://example.com/image/v2/1/xewjxbvbpfjb5bwhf3zwfxy3rssa4evprfxrsz535hbzmelqxjscjpsa35hfil6ffcoyn5pcpvffdhz83bah6q71q4bbza1v2agdapfuauz-pysdacpff6si32j7wdpg.jpg  http://example.com/image/v2/1/ov5nuy7aimyzgoryvj1nkdpznb7rqm8qjsj09i9g_aif5efrlaprknn6bs1x1fnnmh38u3dinzseyfrq_pxogo-bvlgtdvm2rm5cutq6vpdaijtpbvs9c303dhesii-7.jpg  </data> <data>  98317611445 98317632517 50000967225     9   9   50045650613 10000000378 43060   db          http://example.com/image/v2/1/zvxyj-0puuuuyqekgbr-h0xfqkxenbzgjt5ipni1rzwjxcyabqe-asv8_eefwwnwl8afbqtsmnkajruqvjw_cpyifgizykkcef9g2odlrcy3oyslnzbcfi3tapmdvghs.jpg  2013-07-26 18:36:04 2013-08-12 10:47:19 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/zvxyj-0puuuuyqekgbr-h0xfqkxenbzgjt5ipni1rzwjxcyabqe-asv8_eefwwnwl8afbqtsmnkajruqvjw_cpyifgizykkcef9g2odlrcy3oyslnzbcfi3tapmdvghs.jpg  http://example.com/image/v2/1/fey2aywcs--sizukggreqcn962cwjfjodfwuhnkruq3rhyqqk5snezeav9v407s-q1iyi-04p0tmrecl7papow_a5zvkycxeywvupj_hvnr7ktdmgbrlenevryiqw6j3.jpg  http://example.com/image/v2/1/iv_m9t9x57rrnelpfnuwu8eozsqp8neqfvjanxzbrix-j4_kfny3u2knzsqkicjupnsb-z-spxwqyvyplq3f1cmlpbzsj3oouhxncucqqr2p4dmfi48-cul6f9xpdj4q.jpg  </data> <data>  98317611445 98317632519 50000967225     1   1   50045650613 10000000378 53148   db          http://example.com/image/v2/1/ckjewnhdgjlnzgmfcpx4l_dc7ipro78adt-vbuzplngvofnnse86npelrmuihdlwxj2smytewzd40d4bpdnf4hsvokylsi6vyzz76em1rnqtlnlsutkwbzjpk6atyi1b.jpg  2013-07-26 18:36:04 2013-08-12 10:47:19 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/ckjewnhdgjlnzgmfcpx4l_dc7ipro78adt-vbuzplngvofnnse86npelrmuihdlwxj2smytewzd40d4bpdnf4hsvokylsi6vyzz76em1rnqtlnlsutkwbzjpk6atyi1b.jpg  http://example.com/image/v2/1/inh6bcq8o6nmqdkotg7ad6exqero2v_qdtiagdeszw6ddku2zy2mvpdn0jxwey5bisypas24nhml9tpll8zyiwicrgesaqb5ia_d-b5wmeiyibf8oa-sk37x2dwuavin.jpg  http://example.com/image/v2/1/kldberi17ouwfbfzf7nan9jhlcgrn88kt0yykf5e0o9ahme00f2nbtqtiuksuaagnwa9xcmjjlb7lxcdws_ko2sw_kfljmqcjt9siywxbh6447isklixoi9bz6h1twbp.jpg  </data> <data>  98317611445 98317632520 50000967225     14  14  50045650613 10000000378 41738   db          http://example.com/image/v2/1/gfj5mvruhlkogbfnvy_vvj8kiqivk3pqidxpenqkxiyduspvkmycroiwjyfcfpdstv0jb5-t24qvnen0bho9bq1gqalfwcfjjozgnjwav-7bfowbj6gtv-6c9qp3byub.jpg  2013-07-26 18:36:04 2013-08-12 10:47:19 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/gfj5mvruhlkogbfnvy_vvj8kiqivk3pqidxpenqkxiyduspvkmycroiwjyfcfpdstv0jb5-t24qvnen0bho9bq1gqalfwcfjjozgnjwav-7bfowbj6gtv-6c9qp3byub.jpg  http://example.com/image/v2/1/nhqc1fikgo2zekkuzr56-raf2uhwncypbjfh5kc6vwmhp-z-a0wddm9xne4kzkpzb4meweoc3wlrmapchnsl7wq1rux1vceux8vmgjszf9nepk0ob3dmjd3sqzg7_z-i.jpg  http://example.com/image/v2/1/6nhg64enlmhmnarcoj_rqqgpsnsi__qg1hgulrvzateikmbpjlqutyimhagkxl59ufvznuxbebrpwlyshcu93ekexlwhpqwbpnbngctnc1ukhnr94pjwvobcbs-fdfjk.jpg  </data> <data>  98317611445 98317632521 50000967225     15  15  50045650613 10000000378 46788   db          http://example.com/image/v2/1/is4dbfvvzaj7pjkvifbhjulhd9_b8xel8ofkdcjwvbrxibmpt2auybggn3nrkqeua6ajzgsqizvvhgb7r-py3k-l5gmhvgdwhbaueie1gmmizplfrdhzuw2yhzaihvcj.jpg  2013-07-26 18:36:04 2013-08-12 10:47:20 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/is4dbfvvzaj7pjkvifbhjulhd9_b8xel8ofkdcjwvbrxibmpt2auybggn3nrkqeua6ajzgsqizvvhgb7r-py3k-l5gmhvgdwhbaueie1gmmizplfrdhzuw2yhzaihvcj.jpg  http://example.com/image/v2/1/wpkmwxoxvrpso0g22emzucbn7olnalysyfnwl11hr_npfpnzm7kcydiphhazr9q3nuttpzbnlz95jvttaxuwsdisnlioqnbkyddbt-dwkev01hud7btgg7i-hiihebzj.jpg  http://example.com/image/v2/1/ztimyr6lmjgtjbetwu1xh5yqynvewjt9zqi_6mer_o6c3ehrmdhemq3crvcpgyjtmm9yfqquya4qxf3ffzduxvogtu8nxa_mmpxb4g8aq5bjhqirfumueqawxssjrr0m.jpg  </data> <data>  98317611445 98317632524 50000967225     2   2   50045650613 10000000378 35582   db          http://example.com/image/v2/1/2a7poidfanuz1tvbgr6ei-bmx0ntu7gyx-u_klxirqsxe-_1su0fku0yuhjhar9_nadlii8iyzcktv5yk2gblvjwuazmcbwam7fbextoghhgeqdjqnyjmixuzo8jninr.jpg  2013-07-26 18:36:05 2013-08-12 10:47:21 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/2a7poidfanuz1tvbgr6ei-bmx0ntu7gyx-u_klxirqsxe-_1su0fku0yuhjhar9_nadlii8iyzcktv5yk2gblvjwuazmcbwam7fbextoghhgeqdjqnyjmixuzo8jninr.jpg  http://example.com/image/v2/1/ftb4tjmynw1flh1krkwbarjpvnml4a1epnacv6wi7adrgu4yr0oisw-3kq-vjbfltgomnho_fese1fgeywndpayjln2meim7-ucqhfdsxyfnjussicjn4lt5viozd09x.jpg  http://example.com/image/v2/1/ignj31e_gby0jsdq5wu7yadcudt-3ohpq40dvyixl8ywyipbzivh1cum6cbwntevhzh85h2dxrbjqwvgioxvx4mc22ilvfpjah_ojksnwx2zbbjezfjnsoqzxbesch5a.jpg  </data> <data>  98317611445 98317632525 50000967225     3   3   50045650613 10000000378 38361   db          http://example.com/image/v2/1/_artrau4xj3oa0eygz7huwxgk-40pcxtfplgmxvwq1g6zhgkuthn4r6kti2iwra7uafxd48pagqhgh9dqga9jryxbg0ytehmviy2phzqpuckqpqc5yp_9tbc_aefxmes.jpg  2013-07-26 18:36:05 2013-08-12 10:47:21 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/_artrau4xj3oa0eygz7huwxgk-40pcxtfplgmxvwq1g6zhgkuthn4r6kti2iwra7uafxd48pagqhgh9dqga9jryxbg0ytehmviy2phzqpuckqpqc5yp_9tbc_aefxmes.jpg  http://example.com/image/v2/1/ekrxdrstadldcj19l7edra18zzdzuljhlawwstdvkgzmwlwkwr8rejizhd_mzwv50jzf_jyur5btvsx6yfrjs6gy3o1uyq1jd3fj1qmv4z90hvrwr7alzfgqi1vk2t1k.jpg  http://example.com/image/v2/1/osflrx8kmwaxppsuhjqxurpnqmg-oj7wvl6bb_kalq_7-zpcljhz0hb6retpdnfsynh-wg9pprlltpyqogpww7ojzaatsp5poyu14tririciay_cq7fox1_nermddkyu.jpg  </data> <data>  98317611445 98317632526 50000967225     4   4   50045650613 10000000378 49057   db          http://example.com/image/v2/1/i9jisoexag1-yyabexovg72krhg36fdiqobljllzeism2fxgdoqe2d2hhtd7u0fu6t3iug2zq4b5e_ua7kn3tyduumup6hpuaxzs9qgcf6hfopdiesqyd_c7z5q4sdbi.jpg  2013-07-26 18:36:05 2013-08-12 10:47:22 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/i9jisoexag1-yyabexovg72krhg36fdiqobljllzeism2fxgdoqe2d2hhtd7u0fu6t3iug2zq4b5e_ua7kn3tyduumup6hpuaxzs9qgcf6hfopdiesqyd_c7z5q4sdbi.jpg  http://example.com/image/v2/1/2ljbpmvxapumyxb6cwvi9fuj_vggcb5cgturw7umeqzsd5x_1_5n5-r0mxqrxbwjb2-hvtcqrw8h3vqms5oiornjbsj3fhdsnlbjje2m4bemknd-a_wvtlonkls_vu4b.jpg  http://example.com/image/v2/1/j2jspcza9f9_0aypysromsx3zuptkme11j-0tb-d9w3k_gg3oex4hdwyxjmtcczq7im-ho4p8zomn0y1deki0-c0htry5i8qcjingg0p_hndp-jyrslkq6iwckjic7hz.jpg  </data> <data>  98317611445 98317632528 50000967225     5   5   50045650613 10000000378 21161   db          http://example.com/image/v2/1/ren7e37xsws4phinbschwkjs0nkghtsjrcqkhu_2q56nfrdkuqyhyfd4yfvwy_ctaunizrsca3tj22eumecymmxyeht9ortcku2wa84zb_kns6qpigxzjxzscqx42i8g.jpg  2013-07-26 18:36:05 2013-08-12 10:47:22 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/ren7e37xsws4phinbschwkjs0nkghtsjrcqkhu_2q56nfrdkuqyhyfd4yfvwy_ctaunizrsca3tj22eumecymmxyeht9ortcku2wa84zb_kns6qpigxzjxzscqx42i8g.jpg  http://example.com/image/v2/1/_dmewwjhtufdlesrevytswdrsxv9jpuglnaunixdt_gx0oteylbn-qlbsq3ht_gsnqnpmdtfrzafnl6io5lwf1espcpcffkszrzupm_tumc-covhy-8uofc6vgiovpej.jpg  http://example.com/image/v2/1/e29qflpkcbifr_cs_f-ldwrv1ivn2ikonj8ynqqco9x9lp5uklmt9zxjnnliuvuusgtbhgdlfrh94ytkx4e_srwruorzfnczbpxra4vjvxagsdi-hhb3qc6v8hdeqkwq.jpg  </data> <data>  98317611445 98317632536 50000967225     6   6   50045650613 10000000378 56851   db          http://example.com/image/v2/1/ae75xkgmz7gcgpa-dhxytlisibpgfkpbngb_m6yeurz8v_mfzsyzakjtknaryjzo47qvjt3jwql1t9sfjjbwoby7sy05d8u7n4o8hget6glj2ey7w_wr9g8_pr5khq8k.jpg  2013-07-26 18:36:06 2013-08-12 10:47:17 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/ae75xkgmz7gcgpa-dhxytlisibpgfkpbngb_m6yeurz8v_mfzsyzakjtknaryjzo47qvjt3jwql1t9sfjjbwoby7sy05d8u7n4o8hget6glj2ey7w_wr9g8_pr5khq8k.jpg  http://example.com/image/v2/1/jjpfgmxuqgjn2dlj9jqu580fmozqslktrm2y8sefc0q6hyt3k5bida8iqx_ipcxub_3yxyopcr5ok5ixgho5bocfbwfoyaxrfwceft1zgg3zacwk6pl_ujkh7skkij2p.jpg  http://example.com/image/v2/1/en62d09txnozx6mvvkjfisn5jh--gmz7lmhmjtvixrtcttpogzs9pcou_0md8nzb5kzptxtoqrtqhqye76dahpzs8ldp9d_xe_hi2-wptoljz3id9xxiuwdpllvr_naw.jpg  </data> <data>  98317611445 98317632549 50000967225     7   7   50045650613 10000000378 38316   db          http://example.com/image/v2/1/xfff_cq91twatvgog3wcettbakm2tpbgu7uq9cuz_l2n1cwccvw0istrt7n6-svbdlrvrdtchtjdbhc6b7ijjw25vi9p43k0yltdp8rm6gumwtfqq0frse5urcgeaynl.jpg  2013-07-26 18:36:06 2013-08-12 10:47:18 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/xfff_cq91twatvgog3wcettbakm2tpbgu7uq9cuz_l2n1cwccvw0istrt7n6-svbdlrvrdtchtjdbhc6b7ijjw25vi9p43k0yltdp8rm6gumwtfqq0frse5urcgeaynl.jpg  http://example.com/image/v2/1/spzlvtcwcehfbx_mmgvejmjdhhxys1mda4fluxvvq_icpr58ut6s2lvif59rtmkvsx2goyzvlkhf2hlepih9npqb_cfucv8jcazjpp3pwk1ldofdilpxhts2dzucowez.jpg  http://example.com/image/v2/1/84icvgtktnimvu48xej-xvlavllnwxiqqud-4sidqgzjqqfavru48exiqzzk1wpfdw_zwgfflrqmh35iec7hu5wqxbiriw-efb91x2gy_esfx34b_uy0p24mwovg1ylk.jpg  </data> <data>  98317611445 98317632560 50000967225     8   8   50045650613 10000000378 45512   db          http://example.com/image/v2/1/scml2tepldcw7trvq0lkez42g6ur85ayurcf5bqtv9u5ylyto2me6zxz1d7jwavkqhbvbjszkyy6le1oj1qnrxxod3wxvozcljjdoat-etrbtp968nsb_r7jd6hqpw-p.jpg  2013-07-26 18:36:06 2013-08-12 10:47:18 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/scml2tepldcw7trvq0lkez42g6ur85ayurcf5bqtv9u5ylyto2me6zxz1d7jwavkqhbvbjszkyy6le1oj1qnrxxod3wxvozcljjdoat-etrbtp968nsb_r7jd6hqpw-p.jpg  http://example.com/image/v2/1/zx7oxrkxsfvmgddupb8snkx_vqev-a1dlarjnhq8ynvuwc_zi0_2vav4bxvfpytm4pmitjff4gzofvkekelcnwvuximmbcgquvoc7a0izvrxbwuc38q9mheopfeciioc.jpg  http://example.com/image/v2/1/c4o7bm_e9ouwzihyq_vvh__f4eojwriwkq89wj7sjfx8apgm0xax2mqy2fam7fj2am3e-z7kqqnqqq5fxy_rolvhejybqunfg2oqxpwlqb-eve10n8xl6c4yvusxviu5.jpg  </data> <data>  98317611445 98317632571 50000967225     16  16  50045650613 10000000378 33417   db          http://example.com/image/v2/1/qsh3xtnopsdyc2hdjqfxbjyocdsxssskv52b-kckhmx5uch6w5s8kysvytugt0ctwdltlmtflwpwvjv5d_ungwrkbh_dygiw9yyqi5njexsjhahq-2ogxa5zemss0pt_.jpg  2013-07-26 18:36:07 2013-08-12 10:47:20 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/qsh3xtnopsdyc2hdjqfxbjyocdsxssskv52b-kckhmx5uch6w5s8kysvytugt0ctwdltlmtflwpwvjv5d_ungwrkbh_dygiw9yyqi5njexsjhahq-2ogxa5zemss0pt_.jpg  http://example.com/image/v2/1/egw2t-dcg48brofozeysay7pzr8y4xlrrhbzkan3zazyaad49p1bzx8mjzh-sp0q0obxmmcp4rl7keulxfjlp5kvmxl1blk1tstfh9vkmerujispdjt3_cdfuncf32ou.jpg  http://example.com/image/v2/1/ye-rsixot_qudg8jxnpz94jfksa6x60o6yhbwpt9ofjlvyi9hcuz0ccbwh9ahx7yp61zpbqlbfngeldhpzxi-0xvkon9hrnpeaqpba-59tcpnbfxj0rgkbfn94_ckg8a.jpg  </data> <data>  98317611445 98317632577 50000967225     17  17  50045650613 10000000378 27502   db          http://example.com/image/v2/1/8urnbypmlldat_qtsivzb3e7mi_zlmi_rtfabxiarwhtinyhfuutqbzghar2juqg5zifoffipe-dv0gbqrgxklcskb08a5ya3lkcnm-nay7tspejafmccmth5pxoziuo.jpg  2013-07-26 18:36:07 2013-08-12 10:47:20 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/8urnbypmlldat_qtsivzb3e7mi_zlmi_rtfabxiarwhtinyhfuutqbzghar2juqg5zifoffipe-dv0gbqrgxklcskb08a5ya3lkcnm-nay7tspejafmccmth5pxoziuo.jpg  http://example.com/image/v2/1/ig3x9gb84ub9ayiw0wcie96dlg6t7syhjpsos62hbplyua0v3xln9vkzs_5shemtvjl0_xswo46vn3nesgdo3zbddzpb03ge0b1gqsdpl99zm0fjk6p1aip8zrlydfzf.jpg  http://example.com/image/v2/1/iifd9hrfolnhmucp9qta_f2cj_ie4270ps7be3qgdgxj60csbiroo2lhrwi6absdtszuzvzcdmootlevm0cpg66nzmfswsreiyyxqb0e3bltfd_qvuf3lw71vsdfbxce.jpg  </data> <data>  98317611445 98317632581 50000967225     18  18  50045650613 10000000378 36192   db          http://example.com/image/v2/1/pcdrmlbsuv-cpoq8ypreqqrhfjyvbweoyh8kk1waib1nuccrozmk-ajgsmz2typdrbienv32l2ti-tdcfbuj_weyikzl3pia4jrxhd8noogf1tmxa4qut5agsitqdwyy.jpg  2013-07-26 18:36:07 2013-08-12 10:47:21 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/pcdrmlbsuv-cpoq8ypreqqrhfjyvbweoyh8kk1waib1nuccrozmk-ajgsmz2typdrbienv32l2ti-tdcfbuj_weyikzl3pia4jrxhd8noogf1tmxa4qut5agsitqdwyy.jpg  http://example.com/image/v2/1/yhxavivjsv-j4ixvv1c69ttraons1lxoip2c5vwp6zjjbcrzdqt7dwd8xu15ztyp1b_lhj5s19o1h0wbbtmrebs70dpesux4pwaf4yl21nxxkr5byphk66s-tjqvwgit.jpg  http://example.com/image/v2/1/avjxwzrahiza2wpdyafradk_7eeyej704gk3m-7trqdbf4w8r9cpfhzshceynvojj-dn7defvo8yol2cgodafgi5tf0vfibh_tscm1evcing56tdcab8b_kwtbttwitp.jpg  </data> <data>  98317611445 98317632582 50000967225     19  19  50045650613 10000000378 40515   db          http://example.com/image/v2/1/hd2se1z4b5cl0ioppprbd7u23qwqhgvpv93axb0xtvatalvtziquezqsnio-cfggztz3axe5iug4-9fzwztfquzwdivazhs2nwdagazdxxcnifh2d_og9riwrhv2f5dt.jpg  2013-07-26 18:36:07 2013-08-12 10:47:22 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/hd2se1z4b5cl0ioppprbd7u23qwqhgvpv93axb0xtvatalvtziquezqsnio-cfggztz3axe5iug4-9fzwztfquzwdivazhs2nwdagazdxxcnifh2d_og9riwrhv2f5dt.jpg  http://example.com/image/v2/1/i3wkbqamrdx2cizshf8jgfzztgctei47tifggrmuh51n-elukdmvksvryamyprlwxfi-hxlh6e93rigyildij_pwtlgridfabgmpkb_xk9sg5qyhi3dxbdo6qh4ulmfm.jpg  http://example.com/image/v2/1/uyzz2ltn9sr83yalnl7w9au9gejqyhoa5hrzdbvwhpoc1ltr3u0naae5xp801kewtg2ohkjpeymcnz9n0s4cxyloeox8yjraihfgamg6io4wf4fi7ol2ixy_sruelxmb.jpg  </data> <data>  98317611445 98317632642 50000967225     20  20  50045650613 10000000378 31265   db          http://example.com/image/v2/1/otblzmcjbfgyvelcxzjcysfbysfihry1ncdm0udfxk5m-bbbwjj3awqts0dynwziamtsm3ffhm2ot7portvwt_pcp6ykwn4pioydkumwstyk2ldnhjw5lyn-bmjmxvdg.jpg  2013-07-26 18:36:08 2013-08-12 10:47:23 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/otblzmcjbfgyvelcxzjcysfbysfihry1ncdm0udfxk5m-bbbwjj3awqts0dynwziamtsm3ffhm2ot7portvwt_pcp6ykwn4pioydkumwstyk2ldnhjw5lyn-bmjmxvdg.jpg  http://example.com/image/v2/1/uav2soj6rpdwvrmv_rfxult-ghrmrbdk3tyad6qi4vw9r_edt4zcuou0wtzhw5_twz6okfkk5sb_mc85yjvcwgkdmqpodjxemhjtonx5efv6riu_63i4c0fjrn-a2h1i.jpg  http://example.com/image/v2/1/5xcj5qdrztb45o14rikm516olbzkm-dw-rcuoojk3442voiigstbqggepur9bmwdm7hsyo0-vx9cf_qfdcwzzgsnipvx_fqqrishaif09hu1s0dux08obpwy07fo4ouu.jpg  </data> <data>  98317611445 98317632643 50000967225     21  21  50045650613 10000000378 33523   db          http://example.com/image/v2/1/w2zi2mzvrdl7wnxjbn_lahy7wmfwdhsprh9ufnqsbbdsunf4d2190qmic8reflnbz194qg-6yqocqt-hn3im89msxsv1ic4xacg7zspn-z2nz7fqvwqrh3rci7wplzwc.jpg  2013-07-26 18:36:08 2013-08-12 10:47:23 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/w2zi2mzvrdl7wnxjbn_lahy7wmfwdhsprh9ufnqsbbdsunf4d2190qmic8reflnbz194qg-6yqocqt-hn3im89msxsv1ic4xacg7zspn-z2nz7fqvwqrh3rci7wplzwc.jpg  http://example.com/image/v2/1/ubicyrjhgtijorvzr6_rjztqv4bn9fe7m-ry1vhd3u0fn7tuwfoirpmdd84esm3sjynpegabwct0bnitypgi8j0flmqnh50jikoqyftls5lxwi40421ipkuor2qkv_wa.jpg  http://example.com/image/v2/1/vya7kofizgnzl-kcp6fkcqy-2j0denad7cdlmgzv9padfyaszu_3ewdq2firaend-f9bdqonmohv64l2t-7_uo7me_ip74jbaninxpbwh8qvrx22-vxa6mpkkshs6nri.jpg  </data> <data>  98317611445 98317632646 50000967225     22  22  50045650613 10000000378 30072   db          http://example.com/image/v2/1/pb1vrkvbkxthwbbw7b_lye_ia6_xgqfhxyxn-ln5suzimiysgaibrmlo-mxdhdfr6dxsqspkespotpe8lerpok8cxermfczi1vkczwuv-8r6qyd_cjkiutzaiawwzr3o.jpg  2013-07-26 18:36:08 2013-08-12 10:47:24 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/pb1vrkvbkxthwbbw7b_lye_ia6_xgqfhxyxn-ln5suzimiysgaibrmlo-mxdhdfr6dxsqspkespotpe8lerpok8cxermfczi1vkczwuv-8r6qyd_cjkiutzaiawwzr3o.jpg  http://example.com/image/v2/1/ftlas-sf0q-loqm8yvqdizboc0vwdivirdaqtl__k_fa_0gbkrmcoprafx-xpbaqupbhz8illaqpbyqx3aczlo7b8ye4pqpiwz5_yo0_t2ewt9cgjqmipddb8xcp3npe.jpg  http://example.com/image/v2/1/7uhcpqygpnlnfm2wxt6f_0ht0vyrsttsnfaz9-ncq28ttmb4t-sttxa_sfbtku8qewbj3mi5rgcanxtsku1minlib-ze9rihxijeiayaaiog8uvzxhtlw9sftdhp3ogu.jpg  </data> <data>  98317611445 98317632647 50000967225     23  23  50045650613 10000000378 21289   db          http://example.com/image/v2/1/en4mbaa6v4sstc3w_ahwbcopzpavvka_cwnfl2cpbdvz-ppwbcldttw0xjs-fcidcn__eznvmx0ri_3m99u6kyqiku5ko8dcrwic_orr9puxl4u4f7gus5uy_w9aqneu.jpg  2013-07-26 18:36:08 2013-08-12 10:47:24 10000003252 50040377470 50040377473 69664818:mrmls  pw13148515  10000001073 480 640 http://example.com/image/v2/1/en4mbaa6v4sstc3w_ahwbcopzpavvka_cwnfl2cpbdvz-ppwbcldttw0xjs-fcidcn__eznvmx0ri_3m99u6kyqiku5ko8dcrwic_orr9puxl4u4f7gus5uy_w9aqneu.jpg  http://example.com/image/v2/1/yrzlkkoc9nf2wpezgj95b-fnrdpzvl2-e8mfa_fzrdg9nqg69l7lbbmjvzgjadj8f8raljkvn4930znqyx5bvuqbrm7xffahavabxzw69jtkbpk69eiscl9l5ie9_3tf.jpg  http://example.com/image/v2/1/bwjfcubvsa3mbcvjprj6gcnptyjwo2alimcnv7hx3ytndyzceuy9920gsn95iqbpcwoxjzlnacomgmcgac2nybif1z7s3mv_x03cvocsajkvyoc9vlcgzkbq6kljh43c.jpg  </data> </rets>";              var pattern = new regex(@"/(http|https):\/\/(www\.)?[\w-_\.]+\.[a-za-z]+\/((([\w-_\/]+)\/)?[\w-_\.]+\.(png|gif|jpg))/g", regexoptions.multiline);             var results = pattern.matches(input);              console.readkey();         }     } 

why not work, yet if use http://gskinner.com/regexr/ , paste in text works perfect?

remove surrounding /. (c# not use / regular expression literal delimiter)

some escapes not required (\/, \. inside []).

remove trailing g.

var pattern = new regex(@"(http|https)://(www\.)?[\w-_.]+\.[a-za-z]+/((([\w-_/]+)/)?[\w-_.]+\.(png|gif|jpg))"); 

update

you don't need regexoptions.multiline option.