Data Transfer Object (DTO)
A DTO is a “Data Transfer Object”. It’s an object whose purpose is to transfer data. By definition, a DTO should only contain data, not logic or behavior. If a DTO contains logic, it is not a DTO. But wait, what is “logic” or “behavior”? Generally, logic and behavior refer to methods on the type. In C#, a DTO should only have properties, and those properties should only get and set data, not validate it or perform other operations on it.
public class ProductViewModel
{
public int ProductId { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string ImageUrl { get; set; }
public decimal UnitPrice { get; set; }
}