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Filter combobox results

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Posted on by Manc_Gurl

254 Microsoft Employee

I have a gallery which shows results from a collection (colMyCollection). I have multiple comboboxes above the gallery for filtering the gallery. In my Department Combobox I am using the following function in Items property:-

Sort(ForAll(Distinct(colMyCollection,Department), {Result: ThisRecord.Value}),Result)

I now want to show a second combobox that shows only the distinct disciplines from colMyCollection that have the same department as selected in the Department combobox.

If no Department is selected I'd like my discipline combobox to show all distinct disciplines, if a department is selected from the first combobox I'd like my Discipline combox to only show disciplines that have the same department.

I'm sure this is simple to do but I've been away from PowerApps for a while and can't figure this out.

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developerAJ 4,763 on at

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If(IsBlank(DepartmentComboBox.Selected.Value), Distinct(colMyCollection, Discipline), Distinct(Filter(colMyCollection, Department = DepartmentComboBox.Selected.Value), Discipline) )

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SteveSmith81 11 on at

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Firstly, I think you might be overcomplicating your Department combobox.
Unless I'm missing something (which is entirely possible), you could use something like this...
Sort(Distinct(colMyCollection,Department),Value)

On your main question, you can use @developerAJ's formula above, or this would also work.

Distinct(
Filter(
colMyCollection,
Department = cboDeptFilter.Selected.Value || IsBlank(cboDeptFilter.Selected.Value)
),
Discipline
)

I'm not sure if there is any advantage of one over the other.

Both @developerAJ's answer and mine are assuming your department combo box isn't multi-select. If you're allowing multi-select you'll need to adapt the formulas to use SelectedItems rather than Selected.

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