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var phone = await db.AvailablePhones.SingleOrDefaultAsync(a => a.PhoneStatus == AvailablePhoneStatus.NeedAcquire);
The specified type member is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.var phone = await db.AvailablePhones.SingleOrDefaultAsync(a => a.Status == (byte)AvailablePhoneStatus.NeedAcquire);
public static Expression<Func<AvailablePhone, bool>> LimitPhoneStatus(AvailablePhoneStatus status) => e => e.Status == (byte)status;
var phone = await db.AvailablePhones.SingleOrDefaultAsync(AvailablePhone.LimitPhoneStatus(AvailablePhoneStatus.NeedAcquire));
public AvailablePhoneStatus PhoneStatus { get => (AvailablePhoneStatus)Status; set => Status = (byte)value; }SS
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