如何在C＃中获取对象的差异属性？

Question

i have a class with some properties like this:

public class Car 
    {
        public long No { get; set; }
        public string Name { get; set; }
        public int Door { get; set; }
        public Color Color { get; set; }
        public int MaxSpeed { get; set; }
        public int Price { get; set; }
    } 

(this class is an example, my real class is very bigger than it.)

In my program, I need to get difference properties of this class from db(not all properties each time). For example in one case I need name and color of some cars, and in other case I need name and door and price . I want to create one method that support all difference conditions. I know that i could create it using 'params' and 'enum' , but I am research about best way to do it. Thanks

Answer 1

You can just query the propertie when it is called.

public int Value{
      get{
         int myValue = getValue();
         return myValue;
      }
}

Answer 2

Try do this way:

public object[] GetProperties(int state)
{
 object[] temp;
 switch(state)
 {
    case(0):
    {
        temp=new object[]{Name,Color};
    }break;
    case(1):
    {
        temp=new object[]{Name,door};
    }
 }
}

After that, you know , what need return your function, and it's easy parse return result!