No item display

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Posted on by GGG666

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Dear all，

I am building an App.

Power Apps has two data sources, SharePoint List 1 and SharePoint List 2. The two SharePoint lists are associated via a Lookup column. Currently, the gallery uses SharePoint List 1 as its data source. When an item in the gallery is selected, if there is a related ID in SharePoint List 2 (which is the data source for Form3), the radio button in Form3 should display the corresponding value. If the item selected in the gallery has no associated ID in SharePoint List 2, the radio button in Form3 should still be displayed with a default value of 0. Now ，if there is no relevant item in sharepoint list2 ，the Radio in Form3 doesn't display. and show “No item display”

Would you please help on it?

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Pstork1 69,556 Most Valuable Professional on at

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The easiest way to do that would be to put a rectangle over radio buttons on the form and then set its Visible property to only show if no matching record is found in list 2. You can do that using the isEmpty() function around the same lookup you are using to populate the form. Add text to the rectangle, or use a label, to add the "no Item Display" message.

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11manish 3,333 on at

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This is a classic Form binding issue in Microsoft Power Apps
The problem is not the radio control — it’s that Form3 has no record to bind to, so it shows “No item to display”.

Root Cause

Gallery → bound to SharePoint List 1

Form3 → bound to SharePoint List 2

When no related record exists in List 2:

Item = Blank()

Form goes into no record state

Controls (including Radio) don’t render

Goal

Even if no record exists in List 2 →

Form should still show

Radio should default to 0

Solution Options

Option 1: Use Defaults() when no record exists (Best Practice)

Set Form3.Item

If(
IsBlank(
LookUp(List2, LookupID.Id = Gal_1.Selected.ID)
),
Defaults(List2),
LookUp(List2, LookupID.Id = Gal_1.Selected.ID)
)

✔ Ensures form ALWAYS has a record
✔ Prevents “No item to display”

Set Form Mode Dynamically

Form3.DefaultMode

If(
IsBlank(LookUp(List2, LookupID.Id = Gal_1.Selected.ID)),
FormMode.New,
FormMode.Edit
)

✔ New mode → no record → still renders controls

Set Default value in Radio

Inside Radio control:

If(
IsBlank(Form3.Item.ID),
0,
ThisItem.YourField
)

OR better (using variable):

Coalesce(ThisItem.YourField, 0)

Thanks
Manish

Visit my blog : https://powerappbuilder.blogspot.com/

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