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How to manually sort a Gallery inside a canvas app?

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Hi everyone,

Right now I have 2 gallery in front of me. In gallert A I have set up a multi selection gallery, where as the name suggest, I can select multiple items. I just need to click on a check box that is present on every item inside this gallery.

Upon selection, the temporary collection will contain the selected items. I have a second gallery, gallery B. This Gallery will display the content of the selected items.

Now what I want to achieve, is to be able to sort manually the order of the items inside this gallery B and change the order present inside the collection. So that when I patch the content of this gallery into a sharepoint list, it remains in the order that I have created.

I would apprecaite all kinds of answers or hints. Many thanks.

Please do tell me if anything I said was not clear enough.

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Building Power Apps

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RandyHayes 76,297 Super User 2024 Season 1 on at

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@Anonymous

This will depend on the columns you want to sort by in the Gallery B

For example, if you have a Date column in your Gallery A and you want Gallery B to sort on that date, then your Items formula on Gallery B should be:

SortByColumns( Filter(GalleryA.AllItems, yourSelectionCheckBox.Value), "yourDateColumn" )

Just substitute the column name you want to sort by in the formula and the names of your actual controls.

I hope this is helpful for you.

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Community Power Pla... on at

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Thanks for your prompt answer, but that is not really the result I am trying to achieve right now. What I want is not for the gallery to sort under a specific rule that I impose. What I want is for instance when you custom sort (manually sort) a music playlist.

In other words, in Gallery A I selected the items I want present inside Gallery B, but then inside gallery B, I can switch the position GalleryB.Item1 with Gallery.Item2 by perhaps (if its possible) dragging up or down. Do you get what I mean?

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RandyHayes 76,297 Super User 2024 Season 1 on at

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@Anonymous

Ah - gotcha! Thank you for explaining. I was not sure what you meant by manual sort.

So, to do what you are trying, first, you will not be able to drag up and down as drag and drop operations are not available in PowerApps. So you need to collect your selections from the first gallery.

Then in GalleryB, you will need to supply a way to move up and down records. This is normally done with an up and down arrow in the gallery. For these type of order changes, I like to augment the records in the collection with a row number (and your gallery would be sorted by the row number). Then in, for example, the Up icon, you would update the row number minus one in the collection and increment it, and then decrement the row number of the current record. The sort on the Gallery will make it move without any further action. The opposite would be true on the down button except you would decrement the row number plus one and increment the current row number.

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Community Power Pla... on at

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Thank you very much for your reply, I think I get the gist of it. Going to try to make this a thing now. Much appreciated.

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