HasKey(p => new { p.Id, p.ComplexType.Property }) does not seem to work

[michelbieleveld]

Trying to specify the HasKey on the Id and a Property of complex type on that same object. Considering it is just a normal column there shouldn't be an issue, I think, to be able to specify the above. However, I get the following error:

The exception 'The expression 'p => new <>f__AnonymousType0`2(EventId = p.EventId, Address = p.EmailAddress.Address)' is not a valid member access expression. The expression should represent a simple property or field access: 't => t.MyProperty'. When specifying multiple properties or fields, use an anonymous type: 't => new { t.MyProperty, t.MyField }'. (Parameter 'memberAccessExpression')' was thrown while attempting to create an instance. For the different patterns supported at design time, see https://go.microsoft.com/fwlink/?linkid=851728
Process terminated with exit code 1

As an alternative is there a standard way of providing the columns by string ?

[michelbieleveld]

Maybe duplicate of #31246 not sure.

[roji]

Duplicate of #31246