Pen Input to Common Data Service store black image

[antonyS]

Hi All,

I'm looking to store a signature to Common Data Service from Pen Input in PowerApps. I created an entity called "Signatures" and it only have 2 field: Name (Text) and Signature (Image). I created a simple app using CDS connection. On the EditScreen1, i edited the signature data card to use a pen input instead of add/upload picture.

I've changed the update of Signature Datacard into PenInput1.Image.

When I submit a new signature, the gallery showing a black screen instead of my signature.

The connection seems to be fine, as uploading a normal picture (instead from pen input) works fine.

Is there anyone can help / explain me on this issue? Thank you very much.

Kind Regards,

Antony

[v-monli-msft]

Hi @antonyS ,

Can you please share the related formulas here?

Regards,

Mona

[antonyS]

Here is the formula in the EditForm, I deleted the Image input, change it into Pen Input, then change the Update formula into PenInput1.Image

Here is the gallery Items formula (I used the "Start from data" option and the only custom formula i have is on the EditForm)

[v-monli-msft]

Hi @antonyS ,

It seems that so far this cannot be achieved. You could vote on below idea if you need this:

https://powerusers.microsoft.com/t5/PowerApps-Ideas/Capture-Image-and-Pen-Input-and-upload-to-ShareP...

Regards,

Mona

[JensKofod · Accepted solution]

Default Pen Input backgroup color are transparent.... Transparet entity image are not supported, if you change the pen input background image to white it works.... it also works if you change the pen color to white 🙂

[antonyS]

That works like a charm! Thanks very much

[JensKofod]

An easy and multi-purpose solution is found to add pen-input to Sharepoint/Email/PDF thanks to Shane Young, utilizing the addition of a PowerApps Json functionality added on 02/05/2019.

The Short description on how to make this work is to save the pen input image in a JSON format asking the JSON function to include Binary Data:

Set( PenVar, JSON( PenInput1.Image,JSONFormat.IncludeBinaryData ) );

See here for details: https://iiu.dk/2019/10/12/powerapps-pen-input/