combo box collection - remove item

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Posted on by vffdd

1,257 Super User 2024 Season 1

I have the following as the on change property of a combo box

Collect(colmycollection,cb_1.Selected.Name)

I then use that collection to populate a gallery

however how do I remove an item from the collection if someone for example accidentally chooses an item then un chooses it.. because I only have a collect function how/where do I put the remove bit !

TIA

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@vffdd

Question...why are you using a collection?? Your combobox already is a "collection" of the data you need.

If you interact with it, you will eliminate all the work you're creating for yourself with a collection.

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vffdd 1,257 Super User 2024 Season 1 on at

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Thanks @RandyHayes if I could do that even better but how do I populate a gallery with the selected items from a combo box had already actually tried that but maybe was just getting the syntax wrong, in fact most likely I was

cb_1.Selected.Name

had also tried

cb_1.SelectedItems

and multiple variations of the above !! as the items property for gallery 🙂 clearly missing something

Thanks

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@vffdd

What is the Items property of your Gallery and what is the Items property of your Combobox?

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vffdd 1,257 Super User 2024 Season 1 on at

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just to add had also tried putting this as the items of the gallery (MyVar is a variable set up to collect the datasource on startup as it's pretty static)

Filter(MyVar,=cb_1.Selected.Name)

No errors but blank items in gallery

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@vffdd

What was your working formula before?

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vffdd 1,257 Super User 2024 Season 1 on at

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well that was using the collection

Collect(colmycollection,cb_1.Selected.Name)

Then I used that collection as the items property in the gallery

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@vffdd

Hmmm....that's not making much sense! Your collection would have only had one value in it (specifically, one record with a Value column that contained the value of the Selected Name from the combobox)

So how did that correlate to your datasource?? Or doesn't it?

Not really sure of the purpose of having a gallery to just show one record from a combobox!?

Can you expand on that some?

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vffdd 1,257 Super User 2024 Season 1 on at

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No my collection had multiple items in it because it was on the on change property of the combo box so it added a name everytime I selected on...however my issue is that if I de-selected one it didn't remove it !

I'm wondering if I could use the removeif function also on the on change.. some how?

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@vffdd

Can you not just have the multiple-selections option on your combobox??

Then your SelectedItems of the combobox contains everything that you need.

Or are you trying to "simulate" that with a collection so how?

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vffdd 1,257 Super User 2024 Season 1 on at

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sorry maybe we getting confused here 🙂

Yes I do have the multi-select option turned on. I want to take all those selected items and populate a gallery with them because I need to do other things in the gallery !

The only way I could find to do it was create a collection of all of the item selected as per my code above and use that as the items property for the gallery. All works well.

If I could use the combobox selected items as the items property for the gallery yes that would definitely work and cut out the need for the collection cos it's not used anywhere else. and it would solve the remove issue. However as I mentioned above I've tried various combinations but can't get that to work ! So I'm probably just getting the syntax wrong..

thanks for your patience ! 🙂

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