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I'm new to generics and I'm having some trouble implementing a small self practice code. I'm creating a linked list. I want it to store char or int values. So I decided to make the implementation generic: public class Node<T> where T : struct, IConvertible { public Node<T> next = null; public T data = default(T); public Node(T value) { this.data = value; } } I have a method that creates the linked list by generating random values in the range [33,127), converting the value to the type specified by T (e.g. if 86 is generated and T is Char, then the value to be stored in the linked list node will be 'V'; If T is Int32, then value will simply be 86). I'm facing two problems: static Node<IConvertible> CreateList<T>(int len) where T : struct, IConvertible { Random r = new Random((int)DateTime.Now.Ticks); T value = (T)r.Next(33, 127); // Problem #1 Node<T> head = new Node<T>(value); Node<T> n = head; for (int i = 1; i < len; i++) { n.next = new Node<T>(value); n = n.next; } return head; // Problem #2 } These are the problems : 1) Normally this is possible: (int) value = (char) r.Next(33, 127). Why if T is of type Char, the compiler says "Cannot convert type 'int' to 'T'", even if I had specified "where T : struct, IConvertible"? 2) "Cannot implicitly convert type ' LinkedList.Node<T> ' to ' LinkedList.Node<System.IConvertible> '" If T is either Int32 or Char and both of them implement IConvertible, what is the way to cast Node<Int32> or Node<Char> to Node<IConvertible> ? Thanks a lot!

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