Showing results for 
Search instead for 
Did you mean: 
Frequent Visitor

Get the amount of items in a gallery

I'm trying to create an If statement that depends on the amount of items in a gallery. From a quick Googling session, I found that "If(CountRows(Gallery_1.AllItems) = 1, 570, 4)" should do the trick, but I'm getting an error. Gallery_1.AllItems says "The specified property is not accesible in this context", and the CountRows then gives "The function 'CountRows' has some invalid arguments". The If is under the X value of the first item in the gallery. My goal is to position the first item based on the amount of items in the gallery. Any ideas on how to fix the errors?

Responsive Resident
Responsive Resident



You code works for me when I try it out. What happens if you create a new label with the Text property set to 


Do you get the correct number of rows then? 

What is the datasource you are using/what is the gallery's Items property set to?

Could you provide some screenshots?



It works perfectly fine in a label for me as well! My data source is SharePoint and the items property is set to:


"If( IsMatch(TextInput_ProjectNumSearch.Text, ""), Filter(Documents, StartsWith('Project number', "1234567890")), Filter(Documents, StartsWith('Project number', TextInput_ProjectNumSearch.Text)))"



Not applicable

If(CountRows(Gallery3_1.AllItems) = 1,1000,500)

does work, only not if it is part of the gallery it is calculating about.


What could try is to set a calculation which says:

If(ThisItem.field1 = First(Datasource of gallery).field1, 100, 200)



That is a really odd limitation. I need to know the amount of items in the gallery, to edit the gallery position. If there is only 1 item, output 570. If it's 2 items output 400 etc. This would be very easy if I could just use AllItems. Limiting the ability to edit values makes sense when there is a danger of infinite loops, but editing the position should have no danger of infinite loops.

Not applicable

almost an infinity loop but really dangerous for performance.

imagine that for each record you are gonna read all records from the list.

so a list of 200 items: you can say for each item i will get all items.

it will call 200 * 200 records 40000!!


that's why 🙂



That makes sense. I'm sure I will never get more than 5 files at once though. Do you know of a way to circumvent this limitation?

Not applicable

If you only want to check if a record is the first one of the gallery, check my previous answer about the comparison of thisitem.value againt the datasource of the gallery with a first applied to it

Helpful resources

PA User Group

Welcome to the User Group Public Preview

Check out new user group experience and if you are a leader please create your group

MBAS Attendee Badge

Claim Your Badge & Digital Swag!

Check out how to claim yours today!


Demo Extravaganza is Back!

We are excited to announce that Demo Extravaganza for 2021 has started!

MBAS on Demand

Microsoft Business Applications Summit sessions

On-demand access to all the great content presented by the product teams and community members! #MSBizAppsSummit #CommunityRocks

Power Apps June 2021

June Power Apps Community Call

Don't miss the call this month on June 16th - 8a PDT

Top Solution Authors
Top Kudoed Authors
Users online (98,897)