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Adding a RowNo to an already complicated Items property

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Posted on by DCHammer

716 Moderator

@WarrenBelz Since it was your initial brilliance that provided this beautiful logic, I return to you once again for guidance. :D

I made one change to the last version you provided since it was returning an empty row at the top of the gallery occasionally. I added a !IsBlank to the Question and Answer and the gallery is clean now.

Now, for purely asthetic reasons, I'd like to add a RowNo to the Items so I can affect visual elements inside the gallery.

You've helped me do that in the past and I thought maybe I could modify the below to add the sequence and then update the list but can't.

If(
   Len(txtFrmQuestion.Text) > 4,
   With(
      {
         _Items: Filter(
            Split(txtFrmQuestion.Text, " "),
            Len(Value) > 4
         )
      },
      Filter(
         DropColumns(
            GroupBy(
               Ungroup(
                  ForAll(
                     _Items As _I,
                     Filter(
                        colFAQ,
                        _I.Value in Text(Question) || _I.Value in Text(Answer)
                     )
                  ),
                  Value
               ),
               Question,
               Answer,
               Grouped
            ),
            Grouped
         ),
         !IsBlank(Question) && !IsBlank(Answer)
      )
   )
)

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Building Power Apps

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MarkRahn 1,147 Super User 2025 Season 2 on at

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Adding a RowNo to an already complicated Items property

Hi @DCHammer,

@WarrenBelz helped me out with learning the "With" statement recently. I think this would work:

With( { _Items: Filter( Split( txtFrmQuestion.Text, " " ), Len(Value) > 4 ) }, With( { _FilteredItems: Filter( DropColumns( GroupBy( Ungroup( ForAll( _Items As _I, Filter( colFAQ, _I.Value in Text(Question) || _I.Value in Text(Answer) ) ), Value ), Question, Answer, Grouped ), Grouped ), !IsBlank(Question) && !IsBlank(Answer) ) }, ForAll( Sequence(CountRows(_FilteredItems)), Patch( Last( FirstN( _FilteredItems, Value ) ), {RowNo: Value} ) ) ) )

It is a technique I used in the past that I found on this website:

https://powerapps.co.nz/auckland/index.php/our-blog/41-add-alternating-row-colours-to-power-apps-gallery

If I've answered your question or solved your problem, please mark this question as answered. This helps others who have the same question find a solution quickly via the forum search. If you liked my response, please consider giving it a Like.

Thanks
-Mark

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DCHammer 716 Moderator on at

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Adding a RowNo to an already complicated Items property

Thank you Mark. That fixed it. I did need to add ID into the GroupBy clause so I had it later but this works and I can show/hide things based on their RowNo.

I had a With statement that did it but the inside of that With was far less complicated than what I had here and couldn't figure out how to modify.

Thank you again.

Darren

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WarrenBelz 152,847 Most Valuable Professional on at

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Adding a RowNo to an already complicated Items property

Hi @DCHammer

Responding as you tagged me - firstly @MarkRahn is correct. The blue bit below will save you a few lines of code ( I wrote a blog on this a few years ago)

If( Len(txtFrmQuestion.Text) > 4, With( { _Items: Filter( Split(txtFrmQuestion.Text, " "), Len(Value) > 4 ) }, With( { _Data: Filter( DropColumns( GroupBy( Ungroup( ForAll( _Items As _I, Filter( colFAQ, _I.Value in Text(Question) || _I.Value in Text(Answer) ) ), Value ), Question, Answer, Grouped ), Grouped ), !IsBlank(Question) && !IsBlank(Answer) ) }, ForAll( Sequence(CountRows(_Data)), Patch( Index( _Data, Value ), {RowNo: Value} ) ) ) ) )

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