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Clearcollect, Sort and Distinct function on dropdown

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Posted on by s44

691

Hello,
I grabbed a friend's Power Apps project to help him work on it, but I don't understand a formula he put on the "OnSelect" property of his dropdown.

Could you please explain this formula to me? Thank you in advance!

ClearCollect(
 colCategorie;
 {Result: ""};
 Sort(
 Distinct(
 Categorie;
 Categorie
 );
 Result
))

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s44 691 on at

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Re: Clearcollect, Sort and Distinct function on dropdown

Thank you so much ! It's much clearer thanks to you!
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BCBuizer 22,012 Super User 2025 Season 1 on at

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Re: Clearcollect, Sort and Distinct function on dropdown

Hi @s44 ,

Looking at this formula it is probably used to populate a dropdown or combobox to select a category as part of some filter statement. I added comments that will hopefully clarify:

// This formula creates a collection (colCategorie) with a single column called Result ClearCollect( colCategorie; //This adds an empty item at the beginning of the collection {Result: ""}; //Further items are added extracting the unigue values from the Categorie data source, in the Categorie column and those are then sorted alphabetically, ascending. Sort( Distinct( Categorie; Categorie ); Result ))