Object reference not set to an instance of an object on adding an object to a list
<p>In the following code for, yet an unknown to me  reason it keeps on throwing a the exception in the title. </p>

<pre><code>            try
        {
            conn.Open();
            createDraw.ExecuteNonQuery();
            rdr = getDrawId.ExecuteReader();
            string rd = rdr[0].ToString();
            int tid = Int32.Parse(rd);

            Drawing dr = new Drawing(tid, pos, orientation, defaultColour, 200.0, 300.0, fname, "local");
            this.NoteScatterView.Items.Add(dr.getSvi());
            if (dr != null) { drawings.Add(dr); }

        }
        catch (Exception ex) { Microsoft.Surface.UserNotifications.RequestNotification("Unable to create Drawing", ex.Message + "in Session.createDrawing"); }
</code></pre>

<p>I'm just trying to add the drawing object in a list of Drawings</p>

<pre><code>        private List&lt;Drawing&gt; drawings;
</code></pre>

<p>for later use, but I don't know why this exception is thrown. </p>
