@danielle365
Yes, you can use all the criteria from your text input controls and look up that record.
The formula would be similar to the following:
LookUp(yourList,
FirstNameColumn = FirstNameInput.Text &&
LastNameColumn = LastNameInput.Text &&
ContactNumber = ContactNumberInput.Text &&
EmailAddress = EmailInput.Text,
true
)
You can use this in a Visible property for a label as it is to show that it exists.
Or you can use the formula in a Text property for a label to display the existence or not.
Ex:
$"Record {
If(LookUp(yourList,
FirstNameColumn = FirstNameInput.Text &&
LastNameColumn = LastNameInput.Text &&
ContactNumber = ContactNumberInput.Text &&
EmailAddress = EmailInput.Text,
true
),
"exists",
"does not exist"
)} in SharePoint List"
I hope this is helpful for you.