string - How to extract URLs from HTML source in vb.net -

my question is: have program fetches whole source code of specified url. source code saved in variable.

part of source code looks this:

"thumbnail_src":"https:\/\/scontent-fra3-1.blablabla.com\/t51.2885-15\/s640x640\/sh0.08\/e35\/1234567_984778981596410_1107218704_n.jpg","is_video":false, 

the code has quite bunch of urls. want code part "thumbnail_src":" marker beginning extraction process , stop extraction @ ","is_video":

this should done in loop until urls being extracted , saved listing variable.

how can achieve that?

i trying regexp sourcecode. 1 codexer wrote, correct getting eerrors in visual basic net.

        dim regex regex = new regex("thumbnail_src""":    """(.*)""","""is_video")     dim match match = regex.match(sourcestring)      if match.success         console.writeline(match.value)     end if 

i tried way..and way:

dim regex regex = new regex("thumbnail_src":"(.*)","is_video") 

something wrong way entering regex code.

here correct 1 need implement:

https://regex101.com/r/hk0xh8/4

thumbnail_src":"(.*)","is_video