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Lefty
Power Participant
Power Participant

Allow only some file types as attachments

Hello,

 

Is there a way I can restrict only certain file types to be uploaded via a Power Apps form (canvas app) linked to SharePoint Online.

Currently I want only PDF to be attached to my form, is this possible?

 

I've tried something like this:

Created a label - LblAttachmentWarning

On the Visible property of the label:

If(!".pdf" in Concat(DataCardValue38.Attachments.Name,Name&","),false)

On the submit button Visible property:

!LblAttachmentWarning.Visible

 

But I dont get the error appear when i upload a non PDF or even when i upload a PDF

 

1 ACCEPTED SOLUTION

Accepted Solutions

HI @WarrenBelz 

Thanks for all your responses.

I couldn't get your suggestion to work, but I've cracked my initial question, its easy when it works!

I've used the following code on my labels visible property , and made my submit button invisible if my label shows: 

If(Not(".pdf" in Concat(DataCardValue40.Attachments.Name,Name&",")),true)

This allows me to only submit PDF

View solution in original post

9 REPLIES 9
WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hello @Lefty ,

This on the OnAddFile properties of the Attachments card: (I will call the card AttachmentsCard) to generate an error message hopefully the user will acknowledge and set a variable you could disable the form save or something else on (I don't know of a way of clearing the attachment control)

If(
   Last(
      Split(
         Last(
            AttachmentsCard.Attachments).Name,
             ".")
         )
         .Result <> "pdf",
         Notify(
            "Only PDF files can be attached",
            NotificationType.Error
         );
         UpodateContext({vAtrErr:true})
      )
   )
)

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

HI @WarrenBelz 

 

I've tried your suggestion on the Datacard but getting a few errors:

 

If(
Last(
Split(
Last(
Attachments_DataCard1.Attachments).Name,
".")
)
.Result <> "pdf",
Notify(
"Only PDF files can be attached",
NotificationType.Error
);
UpodateContext({vAtrErr:true})
)
)
)

 

Noticed that my initial question works if i say:

 

Visible fx: If(".png" in Concat(DataCardValue38.Attachments.Name,Name&","),true)

 

But I dont want to name all the file types, rather i want to say if its not PDF show the error, then i disable the save button, but cant get that fx to work either

WarrenBelz
Most Valuable Professional
Most Valuable Professional

Hi @Lefty ,

Without testing the issue with the first formula, I will try something hopefully less complex - your coding skills are obviously well up to extrapolating from this.

The formula for testing the extension of the first attachment should be

Last(
   Split(
      First(
         DataCardValue38.Attachments
      )
      .Name, 
      "."
   )
)
.Result

So if this result is not "pdf", you should have something to test and hide/disable. Happy to help further if required.

 

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up

WarrenBelz
Most Valuable Professional
Most Valuable Professional

HI @Lefty ,

I have had some more time to try to give you a more complete solution and have tested this on one of my Attachment controls successfully.

Firstly, the target is the Attachment Control, not the Card it is contained in - I will call yours FileAttach in the code below. I suggest you put this on your save button

If(
    Last(
        Split(
            First(
               FileAttach.Attachments
            )
            .Name,
            "."
        )
    ).Result = ".pdf",
   SubmitForm(YourForm),
   Notify("Only PDFs allowed")
)

 

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

HI @WarrenBelz 

Thanks for all your responses.

I couldn't get your suggestion to work, but I've cracked my initial question, its easy when it works!

I've used the following code on my labels visible property , and made my submit button invisible if my label shows: 

If(Not(".pdf" in Concat(DataCardValue40.Attachments.Name,Name&",")),true)

This allows me to only submit PDF

WarrenBelz
Most Valuable Professional
Most Valuable Professional

@Lefty ,

This recent post of mine may also help.

HI @WarrenBelz 

 

Thanks, going back a bit, i'm surprised you even found this post of mine!
I think we got it to sort of work when I was looking for a solution for this.... but have bookmarked your new suggested post. 

russoedu
Advocate II
Advocate II

The best way I found to solve this is by counting the number of attachments without the desired extension:

 

CountRows(Filter(DataCardValue38.Attachments, Right(Name, 3) <> "pdf")) > 0

Translating, I'm counting (CountRows) the result of the filter (Filter) of all attachments (DataCardValue38.Attachments) where the last 3 characters are not "pdf" (Right(Name, 3) <> "pdf")).

 

If this filtered value is bigger than 0, it means some of the attachments are not PDF.

Pandaredcap
Advocate I
Advocate I

Try this code on the "On Add file " of the Attachment control 

 

If(Not(EndsWith(First(Self.Attachments).Name, ".pdf")) And Not(EndsWith(First(Self.Attachments).Name, ".docx")),Notify("Only pdf and docx files are allowed", NotificationType.Error); Reset(Self))

 

 

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