/// <summary>
/// Appends a node at the end of the list
/// </summary>
/// <param name="Key">Unique key used to look up the associated value</param>
/// <param name="Value">The value to be placed in the appended node</param>
/// <returns>IDataNode reference to the newly appended node</returns>
public virtual IDataNode <TKey, TValue> Append(TKey Key, TValue Value)
{
IDataNode <TKey, TValue> Existing = this[Key];
if (Existing != null)
{
throw new System.ArgumentException("Duplicate keys are not allowed", nameof(Key));
}
IDataNode <TKey, TValue> NewNode = CreateNode(Key, Value);
if (RootNode == null)
{
RootNode = TerminalNode = NewNode;
}
else
{
NewNode.InsertAfter(TerminalNode);
TerminalNode = NewNode;
}
return(NewNode);
}
