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Validate Modern ComboBox

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Posted on by Tatiana21

Hi,

Today I encountered an issue regarding a ComboBox validation. This ComboBox is a required value, and I've tried to validate using IsBlank() y/o IsEmpty(), but I only get this to be true when I manually click on it and select and unselect an option. How can I approach this? Thank you.

Also, if needed, here's my DefaultSelectedItems code:

If(locNewMode, {Value: ""},{Value: LookUp('Customer List', 'Customer ID' = RecordsGallery1.Selected.'Customer ID', Customer Name)})

I'm using 'locNewMode' to change the DisplayMode's control property.

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Ami K 15,665 Super User 2024 Season 1 on at

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Re: Validate Modern ComboBox

@Tatiana21 - consider replacing the DefaultSelectedItems property with:

LookUp( 'Customer List', 'Customer ID' = Parent.Default )
Tatiana21 19 on at

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Re: Validate Modern ComboBox

Hi, @Amik
Regarding your questions:

1. The data source is SharePoint.
2. The data type for 'Customer Name' is Single line of text.
3. In the items property I just have the list 'Customer List'.

Thank you.
Ami K 15,665 Super User 2024 Season 1 on at

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Re: Validate Modern ComboBox

@Tatiana21 - the answer depends on:

Your data source (SharePoint, Dataverse, SQL etc)

The data type for the "Customer Name" field (Single Line Text, single-select Choice, LookUp etc)

What you have in the Items property of that ComboBox