Using EF Core to convert Enums to string.

EnumConverterConfiguration.cs

public enum CardStatus : int
{
    Active = 1,
    Expired = 2,
    PendingVerification = 3
}

public record CardEntity(CardStatus Status);

public class CardConfiguration : IEntityTypeConfiguration<Card>
{
    public void Configure(EntityTypeBuilder<Card> builder) =>
        builder.Property(x => x.Status).HasConversion<string>();
}

EF Core contains many pre-defined conversions that avoid the need to write conversion functions manually. This is perfect for converting an Enum because it will automatically convert it to string when the provider type is configured as string using the generic type of HasConversion.