C#

dae22000 wrote:

C contains an error logging object, it is not passed an error logger as a method parameter.

PIEBALDconsult wrote:

what is an "eventing class"?

Jim Crafton wrote:

However these are listed as extension methods, and don't appear available to me in .Net 2.0. Is this in fact the case?

Jim Crafton wrote:

I want to get the last element of a dictionary collection

dict.Values[dict.Count - 1]

// experimental code : written very quickly, not tested thorougly
// use at your own risk !

public class FirstLastDictionary<K, V> : Dictionary<K, V>
{
    public K firstKeyAdded { get; set; }

    public K lastKeyAdded { get; set; }

    public void Add(K theKey, V theValue)
    {
        if(firstKeyAdded == null) firstKeyAdded = theKey;

        lastKeyAdded = theKey;

        base.Add(theKey, theValue);
    }
}

private void button1_Click(object sender, EventArgs e)
{
    FirstLastDictionary<string, int> myFLdict = new FirstLastDictionary<string, int>();

    Random r = new Random();

    for (int i = 0; i < 100; i++)
    {
        int rndValue = r.Next();

        myFLdict.Add("key " + rndValue.ToString(), rndValue);

        Console.WriteLine("adding : " + rndValue);
    }

    Console.WriteLine("firstkeyadded = " + myFLdict.firstKeyAdded);
    Console.WriteLine("firstkeyadded value = " + myFLdict[myFLdict.firstKeyAdded]);

    Console.WriteLine("lastkeyadded = " + myFLdict.lastKeyAdded);
    Console.WriteLine("lastkeyadded value = " + myFLdict[myFLdict.lastKeyAdded]);
}