public Task <PurchaseOrderDto> CreatePurchaseOrderAsync(PurchaseOrderDto dto)
{
if (dto == null)
{
return(Task.FromResult <PurchaseOrderDto>(null));
}
dto.Id = Guid.NewGuid();
list.Add(dto);
return(dto.AsTask());
}
public Task <PurchaseOrderDto> UpdatePurchaseOrderAsync(Guid id, PurchaseOrderDto dto)
{
if (dto == null)
{
return(Task.FromResult <PurchaseOrderDto>(null));
}
list.RemoveAll(c => c.Id == id);
dto.Id = id;
list.Add(dto);
return(dto.AsTask());
}