How can I remove added points from field?
<p>I can add points in the field but I cannot remove them. This is the code I am currently using:</p>

<pre><code>public class Vertex
{
    public Point p { get; private set; }
    public int ident {get; private set; }
    public int dist { get; set; }

    public Vertex(Point p, int ident)
    {
        this.p = p;
        this.ident = ident;
    }
}
</code></pre>
