accessing arraylist of objects inside a class

Question

hai.. im havin 2 classes :classA classB classA contains arraylist... objects of classB are added into the arraylist in ClassA.. how can I access properties of classB from arraylist in classA for ex. i tried this... classA.classB[0].property ...its not working!!!

Alan · Answer

You need to cast the ArrayList element to its actual type before you can access a property of that type. Try this example: using System; using System.Collections; class Program { static void Main() { A a = new A(); ArrayList al = new ArrayList(); B b = new B(); b.MyInt = 3; al.Add(b); a.ListOfB = al; Console.WriteLine(((B)a.ListOfB[0]).MyInt.ToString()); Console.ReadLine(); } } class A { ArrayList listOfB; public ArrayList ListOfB { get{ return listOfB; } set{ listOfB = value; } } } class B { int myInt; public int MyInt { get{ return myInt; } set{ myInt = value; } } }