Composite key in a Syncfusion Blazor Datagrid

I need advice on implementing a composite key on a Syncfusion for a Blazor Datagrid. It does not allow composite keys and the ticket to add it as a feature has sat unmoved for a few years now.

This is the TimeUnit class that uses a composite key of ID and Valid From Date:

    public class TimeUnit    {        public Int16 timeUnitID { get; set; }        public DateTime validFrom { get; set; }        public DateTime? validTo { get; set; }        public string description { get; set; }        public Nullable<Int16> days { get; set; }        public Common.SpecialProcessing specialProcessing { get; set; }        public DateTime dateLastActivity { get; set; }    }

And this an extract from dbContext where the key is defined

            builder.Entity<TimeUnit>().HasKey(table => new            {                table.timeUnitID,                table.validFrom            });

That format has stood the test of time through Windows Froms, WPF, and Angular using PrimeNG. But not Syncfusion for a Blazor Datagrid.

I'm thinking of adding something like

[Not Mapped]public Int16 timeUnitID { get; set; }

to the class and filling it with sequential integers after the fetch. I could offer it as a sacrifical key to the Syncfusion Blazor Datagrid.

The attributes of a TimeUnit ID can be different at different points in time - this applies to many of my definitions, so this key format needs to persist.

I am asking for suggestions on a workaround before I pursue the one I have outlined here.