File uploaded to the SharePoint cannot be accessed.

(1) Share

Report

Posted on by Thinzar

Hello,

I have created the file upload feature and automate flow to save the uploaded file to the Share Point.

But, the preview of the uploaded file is blank and the file cannot be viewed since it shows as follows.

File uploading formula is as follows.

ForAll(

fileUploadCol,

fileUploadSP.Run(

{

contentBytes: fileUploadCol[@Value],

name: fileUploadCol[@Name]

}

)

);

And the automate flow is as follows.

Is there anything wrong with my flow and formula? And how could I solve it?

Thanks.

Categories:

Building Power Apps

I have the same question (0)

All responses (7)

Answers (1)

v-yueyun-msft Microsoft Employee on at

Like (2)

Report
Copy link

Link copied!

Hi , @Thinzar

What's the data type you put in your Power Apps V2 trigger:

And dose your "fileUploadCol" is from a Attachments control?

Secondly, there may have a bug in the new designer, you can try to switch to Classic mode and recreate the action to test again.

【My Test flow】

And this is the code i use in my app:

ForAll( 'Attach Control'.Attachments , PowerAppTest.Run( {file: {contentBytes: ThisRecord.Value ,name: ThisRecord.Name}} ) )

Best Regards,

Yueyun Zhang

Was this reply helpful? Yes No
WillPage 2,323 Super User 2026 Season 1 on at

Like (1)

Report
Copy link

Link copied!

Use the JSON() function to convert the uploaded file to base64. Without that you send a appres:// blob uri to the flow which doesn't contain the file content.
For example I have a media upload control. I upload a file then in the OnSelect formula of a button, have this formula:
The base64 there is the contents of the variable after clicking the button. You can send that to your flow and use as the file content after some minor data transformation.

Was this reply helpful? Yes No
Thinzar on at

Like (1)

Report
Copy link

Link copied!

Yes, my "fileUploadCol" is from a Attachment control taken from form control.
Thanks, @v-yueyun-msft .

The file is successfully uploaded if I remove the compose part (which concats the file name with the utcNow()).
However, there is a problem that if the file with same name is uploaded, the file does not appear in the SharePoint.
The concat part is to prevent the above problem. So, is there any way to allow files with same filename in SharePoint? Or how could I overcome this?

Was this reply helpful? Yes No
Thinzar on at

Like (1)

Report
Copy link

Link copied!

Thanks, @WillPage
Does it work on pdf files also?

Was this reply helpful? Yes No
WillPage 2,323 Super User 2026 Season 1 on at

Like (2)

Report
Copy link

Link copied!

It actually does. The media/image uploader control is more versatile than it looks. When you drop the control into the canvas it's actually a group containing the button and an image control (for viewing). You can ungroup and delete the image control, just leaving the button. The file selection dialogue has the file type set to image files but you can switch that to all files and choose a non-image. Then the binary of the file is accessible via the .Media property of the button.

It works but it's annoying for the users having to switch the file type each time when browsing for the file.

Was this reply helpful? Yes No
Verified answer

v-yueyun-msft Microsoft Employee on at

Like (2)

Report
Copy link

Link copied!

Hi , @Thinzar

You can try to use this expression in your "File Name" field:

concat(split( triggerBody()?['file']?['name'] , '.')?[0], '_' , utcNow('yyyyMMddHHmmss') ,'.', split( triggerBody()?['file']?['name'] , '.')?[1] )

The result is as follows:

If this reply can help you , you can click mark this reply as solution (Accept solution) which can help more people, thanks in advance!

Best Regards,

Yueyun Zhang

Was this reply helpful? Yes No
Thinzar on at

Like (1)

Report
Copy link

Link copied!

Thanks, @v-yueyun-msft .
It works.
Also Thanks to @WillPage for the suggestion.

Btw, is there any way to get the uploaded file from the power apps. Like displaying the uploaded pdf to the power apps screen, allowing the download option?

Was this reply helpful? Yes No