MSDN Graphs is wrong

[Narutodono]

Im using VS 2005. Im trying to make a graph work for a assignment. ive been using http://msdn.microsoft.com/en-US/libr...=VS.80%29.aspx to teach myself an use the code given, i downloaded the package at the start to extract the right code but it doesnt work i read somewhere that msdn code is wrong on this subject, if so does anyone know the solution ?

The problem is that in the Nodelist class- public class NodeList<T> : Collection<Node<T>>. The underline an in bold is the problem the error is "Collection cannot be found are you missing a directive or a assembly reference, i read that putting this in would help "using System.Collections.ObjectModel;"

This then causes another problem within the Graph class Error 'ClassLibary1.Graph<T>' does not implement interface member 'System.Collections.IEnumerable.GetEnumerator()'. does anyone know how to fix this problem any help if greatly appreciated.

Thanks Damien

[BigEd781]

So add the namesapace reference as you have already done and then implement the interface, i.e., write a method named "GetEnumerator" which returns an enumeration object. Your class likely maintains a member variable of the type Collection<Node<T>>, so just return the result of its GetEnumerator method.

[Narutodono]

isnt that this part of code?
public IEnumerator<T> GetEnumerator()
{
foreach (GraphNode<T> gnode in nodeSet)
yield return gnode.Value;
}

[BigEd781]

How about..

public IEnumerator<T> GetEnumerator( )
{
    return nodeSet.GetEnumerator( );
}