NPlot.Windows.PlotSurface2D.DoMouseMove C# (CSharp) Method

        public void DoMouseMove(MouseEventArgs e, Control ctr)
        {
            bool dirty = false;
            foreach (Interactions.Interaction i in interactions_)
            {
                i.DoMouseMove(e, ctr, lastKeyEventArgs_);
                dirty |= i.DoMouseMove(e, ctr, lastKeyEventArgs_);
            }
            if (dirty)
            {
                Refresh();
            }

            // Update coordinates if necessary. 

            if (coordinates_.Active)
            {
                // we are here
                Point here = new Point(e.X, e.Y);
                if (ps_.PlotAreaBoundingBoxCache.Contains(here))
                {
                    coordinates_.ShowAlways = true;

                    // according to Måns Erlandson, this can sometimes be the case.
                    if (this.PhysicalXAxis1Cache == null)
                        return;
                    if (this.PhysicalYAxis1Cache == null)
                        return;

                    double x = this.PhysicalXAxis1Cache.PhysicalToWorld(here, true);
                    double y = this.PhysicalYAxis1Cache.PhysicalToWorld(here, true);
                    string s = "";
                    if (!DateTimeToolTip)
                    {
                        s = "(" + x.ToString("g4") + "," + y.ToString("g4") + ")";
                    }
                    else
                    {
                        DateTime dateTime = new DateTime((long)x);
                        s = dateTime.ToShortDateString() + " " + dateTime.ToLongTimeString() + Environment.NewLine + y.ToString("f4");
                    }
                    //Bug fix. Windows 7 will do an infinate loop if this is set.
                    if (coordinates_.GetToolTip(this) != s)
                        coordinates_.SetToolTip(this, s);
                }
                else
                {
                    coordinates_.ShowAlways = false;
                }
            }
        }