ComboBox - Content dependant on Edit\View DisplayMode value.

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Posted on by DarkStranger

I have a ComboBox in a gallery with the below parameters...

DisplayMode: If(ThisItem.ID=EditRecord,DisplayMode.Edit, DisplayMode.View)

ITEM: ["Desktop PC", "Evoko", "Printer"]

Currently, if the ComboBox is set to "Edit", the user can select from one of the predefined items and then the user can patch that item to a SP List. If the ComboBox is set to "View", i want it to display the "ThisItem.EquipmentType" value found in the SP List. I tried changing the "Default" to "ThisItem.SIB85_Device_Type", similar to the labels found in the same gallery, but this doesnt work and gives the error...

Expected Record Value... It was expecting a record, but the rule produces text values.

How can I get the ComboBox to display the SP List ThisItem value is the display mode is "View" and the "Items" values if the display mode is "Edit".

I hope that makes sense & thanks in advance.

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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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@DarkStranger

Change your control from a combobox to a dropdown. A combobox brings only two things to the table - 1. the ability to search and 2. the ability to multi-select. Based on your information, I am not seeing a need for either.

A combobox is more complex than a dropdown in that, first of all, the Default property does nothing! You have to use the DefaultSelectedItems property to set a default...and you must set it to a record that matches the Items property.

If you change your control to a dropdown, you will go much further.

BUT...if you persist with the combobox, then you need to set the DefaultSelectedItems property to:

{Value: ThisItem.SIB85_Device_Type}

You'll notice this is a record with a Value column...because, your Items property of the Combobox produces a table with a single column called Value...so the record will match.

I hope this is helpful for you.

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DarkStranger 88 on at

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Thanks for replying. I have been testing with both the "ComboBox" & "DropDown" and found the below...

ComboBox: I had tried "{value: ThisItem.SIB85_Device_Type}" for "DefaultSelectedItems" and although showing in the SP List, it doesnt show in the "ComboBox", nor shows an error.

DropDown: If i put "["Desktop PC", "Evoko", "Printer"]" in the "Items", it puts "Desktop" in every gallery row... although by adding "ThisItem.SIB85_Device_Type" to the "Default" parameter it does show the SP List entry. I could add "["", "Desktop PC", "Evoko"] before desktop to fix the issue, but curious as to why the 1st entry of the items list is populated to every gallery row.

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RandyHayes 76,297 Super User 2024 Season 1 on at

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@DarkStranger

If you are dealing with blank entries in your underlying records, then do the following (with the Dropdown):

Change the AllowEmptySelection property to true.

This will allow your dropdown to show blank if the underlying record has a blank in it.

If you don't set that property, then the dropdown will automatically select the first item in the Items property records.

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DarkStranger 88 on at

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Thanks,

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