Hi @iwonder :
Do you want to use the Htmltext control to display a base64 format picture in the canvas app?
In theory, HTML supports the display of pictures in Base64 format. But unfortunately, the HTMLText control does not support displaying pictures in Base64 format.For example:
There is a base 64 pic:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAFYklEQVR42sVXfUyUdRz/8XKhMZQO
7nmeuwMFwrBEVJqgDOcUHZvNuTarrdKam0zdKrckAy4goowxbaM5hE1yjVVzLjLRokBFz2qsQPGF
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AABJRU5ErkJggg==
In theory:
In Html Text control:
Picture not shown
In addition, I have an alternative:
Use flow to save the Base64 picture as a file, and then get the URL of the file. In this way, we can use the URL in the HTML Text control to display this Base64 format picture.
I've made a test for your reference:
1\Create a flow('PowerApp->Createfile,Createsharelink,RespondtoaPowerAppor...')
Reference Expression:
decodeDataUri(variables('ThePic'))
2\Add a button and insert the flow to the canvas app
3\Set the button's OnSelelct property to:
Set(thepic,'PowerApp->Createfile,Createsharelink,RespondtoaPowerAppor...'.Run("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAFYklEQVR42sVXfUyUdRz/8XKhMZQO
7nmeuwMFwrBEVJqgDOcUHZvNuTarrdKam0zdKrckAy4goowxbaM5hE1yjVVzLjLRokBFz2qsQPGF
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ADOc+eEfyUyT19Owp0SsKd0U5eYrlU+xvMaLk3S0OcxAbTRcB73BHmdpSWNcn5dPejNDZq2d8jiW
G4W07Q39JCctVr3T+br2ZY+bcac6CoPvzoGryhvscUaOr88CPenNDGb5fCPqKha2o3kRF1MTKfA+
+uxHNNx4IwrDVZFwveMbnJFD7uSzQC960psZft8Je4rFkzXPzh5eME+HTTfUs94mbxx1W+cCVbMw
uH82XNOAM3LIpUZppQe96EnvoN6K5TXaVfPMbCxO1BAVbeCJzBj89tYsDO+/DwOVEX5BDrmbpYZa
etCLnkG/ll8qEqK7WOQe32lybs54AKd23I/RA+EYqDAFBXJPSg219KAXPWf8y+iKQxhXHaLyRklI
363yUAzsC8OghGtfqE9wRg651FBLj7v/aTb+ul4oUi4VipIuh+i+WSKG+spC8Gd5CPr/BWv2OJOc
Hsl9XWoW/v/fht5LhLUXiARZb71cJOquFIlv5BH2EqzZ40xyEsm9OJMfp/cS/wC6xRqbyM2GFQAA
AABJRU5ErkJggg==").piclink)
4\Set the Html Text control's HtmlText property to:
"<img src="&thepic&"/>"
The Result:
Best Regards,
Bof
