Html2Canvas example please #1518

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1. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

   on Jun 13, 2026

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   Luca answered 2018-04-30 18:37:32 UTC

   https://html2canvas.hertzen.com/

   How to use the Wisej is documented in the code, it's one call:

   Html2Canvas.Screenshot((image) => {

   ....

   });

   See the overloads for the additional options.
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   on Jun 13, 2026
3. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

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   Cristian Zerbinati answered 2018-04-30 19:34:43 UTC

   Sorry Luca,

   I don't understand how use it, I have a test button with this code on Click

   Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

   Html2Canvas.Html2Canvas.Screenshot(
   Sub(ByVal img As Image)
   PictureBox1.Image = img
   End Sub
   )

   End Sub

   but do nothing, If I put a breakpoint on row PictureBox, the visual studio don't break on it

   thanks

   Cristian
4. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

   on Jun 13, 2026

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   Luca answered 2018-05-01 00:07:58 UTC

   That's because you are probably using a browser that doesn't support something that html2canvas needs. Check with F12, my guess is that it's the promise construct that is not supported by IE10. Try with Chrome instead.

   You can also add a polyfill like this https://polyfill.io/v2/docs/ to Default.html.  I tried with IE10 and now it works. See the requirements at https://html2canvas.hertzen.com/documentation.
5. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

   on Jun 13, 2026

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   Cristian Zerbinati answered 2018-05-01 07:43:06 UTC

   Ok I'll try to add polyfill, but I use Firefox and Chrome. The demo on hertzen.com works, but not my code with wisej. I have try vbnet and c#

   Cristian
6. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

   on Jun 13, 2026

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   Cristian Zerbinati answered 2018-05-01 10:30:59 UTC

   I have insert Polyfill and update the JavaScript, now works with IE (11), Edge, and Chrome, but not with Firefox. But the demo con site https://html2canvas.hertzen.com/ works olso with Firefox
7. itg-assistant commented on Jun 13, 2026

   

   itg-assistantbot

   on Jun 13, 2026

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   Cristian Zerbinati answered 2020-05-14 07:53:54 UTC

   Solved updating the javascript html2canvas.js of the extension

   bye
8. itg-assistant

   closed this as completedon Jun 13, 2026