vb.net - Generating Three Unique Random Numbers in Visual Basic? -


i have been working on app lately displays 3 random photos. form consists of 3 pictureboxes , button. when user clicks button, 3 different images shown. problem is, however, these 3 images not unique, of time there doubles , triples too. tried implement function catch succeeded @ lowering chances of identical images. there on 50 images choose from, it's not there isn't enough. here code failed solution came with:

private sub button1_click(byval sender system.object, byval e system.eventargs) handles button1.click              randomimageone()             randomimagetwo()             randomimagethree()              if imagenumber1.text or imagenumber2.text = imagenumber3.text                 randomimagethree()             end if              if imagenumber1.text or imagenumber3.text = imagenumber2.text                 randomimagetwo()             end if               if imagenumber3.text or imagenumber2.text = imagenumber1.text                 randomimageone()             end if  end sub

the 'randomimage' functions generate random number in label (eg. imagenumber1), these numbers correlate number of 1 of 50 images. realize not smartest method, not familiar other way.

i need able either generate 3 unique numbers, don't have worry programming in stop double , triple images, or create solution works 100% of time catch double or triple images.

any appreciated, if explained simply. thank you.

i generate random image 1 , image 2, testing image 2 distinct using while loop. once that done move on generating image three.

information on while loop here.

so in rough code (it's been while since used vba properly):

randomimageone() randomimagetwo()  while imagenumber1.text = imagenumber2.text     randomimagetwo() loop  randomimagethree()  while imagenumber3.text = imagenumber2.text or imagenumber3.text = imagenumber1.text     randomimagethree() loop

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