properties - How to have a parent property in C# class? -

for example, in following classes need have parent property in cupboard , shelf. how do it?

public class room {     public list<cupboard> cupboards { get; set; } }  public class cupboard {     public room parent      {                 {          }     }     public list<shelf> shelves { get; set; } }  public class shelf {  } 

you can use automatically implemented property:

public class cupboard {     public room parent { get; set; } } 

you can choose make setter private , set in constructor.

public class cupboard {     public cupboard(room parent)     {         this.parent = parent;     }      public room parent { get; private set; } } 

usage:

room room = new room(); cupboard cupboard = new cupboard(room); console.writeline(cupboard.parent.tostring()); 

if have many objects have parent room might want create interface can find out room object's parent without having know specific type.

interface iroomobject {     room { get; } }  public class cupboard : iroomobject {     // ... }