https://www.matthewdevaney.com/powerapps-collections-cookbook/
Create a form with a few Input fields:
Test it add a few data.
To view summited data go: View -> Collections
or insert a galley
Edit the Gallery to your needs:
Clear the collection:
add button, and onSelect = Clear(ContactInfo)
Delete one Item – ThisItem
Select a record and insert a trash can icon
Add onSelect: Remove(ContactInfo, ThisItem)
Item Detail
Add the labels and input fields, than for each Default input field show the selected Item.
Set fields to View only.
Group Display field and change the Display Mode to View
Add an icon Edit and set a variable to tangle true or false
Set(varEdit, !varEdit)
Now go back to Group Display mode and change it to check on varEdit
To Update use Patch
Patch use a datasource = ContactInfo,
which record = Gallery1.Selected
and the inputs
Patch(ContactInfo, Gallery1.Selected, {Name: I_Nama_det.Text, Phone: I_Phone_Det.Text, Comments: I_Comments_des.Text})
ClearCollect(myNewCollection,ShowColumns(myDataSource,”Column1″,”Column2″))