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Filter datasource in ComboBox

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Posted on by Ceres2186489

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Hi! I am building a custom form by Power Apps integrated with a SharePoint list to allow colleagues to update inventory items. The form includes a combo box connected to a staff contact list (excel) for selecting the responsible personnel. This contact list is updated manually.

Name	Email	Staff Code	Contact No.
Larry Lam	larry.lam@abc.com	MCCL	12345678
Charlie Chan	charlie.chan@abc.com	WTW	23456789

Name	Email	Staff Code	Contact No.
Larry Lam	larry.lam@abc.com	MCCL	12345678
Charlie Chan	charlie.chan@abc.com	WTW	23456789
Mary Smith	mary.smith@abc.com	0	34221234

My goal is to ensure the combo box only displays staff members with a valid staff code (more than one English letter, i.e Larry Lam and Charlie Chan). I'm using the following formula in the combo box's Items property, but it's currently returning nothing:

AddColumns(Contact,NewPrimaryEndUser,Len('Staff Code') > 1)

I'd appreciate any guidance on how to modify this formula so that only staff names matching the criteria are displayed.

Thanks for your help!

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Building Power Apps

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Shravyashree_Shetty 49 on at

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Filter datasource in ComboBox

Hi,

Please try the below

Filter( MyCollection, IsMatch('Staff Code', "^[A-Za-z]+$") )

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Ceres2186489 110 on at

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Filter datasource in ComboBox

I updated the apps with your formula. But combo box showed item1, item2 ...

Is there anything I need to set?

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Ceres2186489 110 on at

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Filter datasource in ComboBox

I'm also running into a small snag with the custom inventory form. It's designed for colleagues to update inventory items, requiring an inventory number. I'm using the LOOKUP() function to pull asset details in my Excel database, but the app keeps flagging an error when the lookup value is blank (before an inventory number is entered).

Do you have any suggestions on how to handle this?

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Shravyashree_Shetty 49 on at

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Filter datasource in ComboBox

Hi @Ceres2186489,

I hope you have Replaced the collection name from MyCollection to Contact (the Datasource of your list)

Also Check the Title in the right side set the fields property to Staff code

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Shravyashree_Shetty 49 on at

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Filter datasource in ComboBox

Hi

For the Inventory Part,

Could you please specify what the usecase is ? Is it the number of characters in the 'Inventory number' ?

Also, you can use !Isblank() instead of Not(Isblank())

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Rajkumar_M 3,741 Super User 2025 Season 2 on at

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Filter datasource in ComboBox

Hi,

To filter the ComboBox to display only staff members with a valid staff code (more than one English letter), you need to adjust your formula to properly filter the data based on the length of the 'Staff Code'. The AddColumns function is used to add a calculated column to a table, but in this case, you want to filter the existing data. You should use the Filter function instead.

Filter(Contact, Len('Staff Code') > 1)

Thanks!

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