EF Value Conversions

value-conversions.cs

// Mais detalhes em https://docs.microsoft.com/pt-br/ef/core/modeling/value-conversions

private static readonly JsonSerializerSettings _jsonSettings = new JsonSerializerSettings { NullValueHandling= NullValueHandling.Ignore };

public class UserPermissionConfiguration: IEntityTypeConfiguration<UserPermission>
{
    public void Configure(EntityTypeBuilder<UserPermission> builder)
    {
        builder.ToTable("UserPermission");
        builder.Property(b => b.Panes)
            .HasConversion(
                v => JsonConvert.SerializeObject(v, _jsonSettings),
                v => JsonConvert.DeserializeObject<IEnumerable<string>>(v));
    }
}