small time use as x axes data problem!

Nov 23, 2011 at 8:52 AM

        double SetXmap(PerformanceInfo p)
        {
             return dateAxis.ConvertToDouble(p.Time);
        }

         ds.SetXMapping(
               SetXmap
                );
            ds.SetYMapping(pi => pi.Value);
            LineGraph chart = plotter.AddLineGraph(ds, lineThickness, String.Format("{0} ", categoryName));

the dateAxis don't show well ,the p.Time data just like below ,the data count is larger than 3 ,it's about 10000 data.

how can I make the x axis show normally?for the data below the x axis is like 0001,0100,0200,....it don't make sense.I want the x axis just as  2011-11-23 02:28:46:5674 and so on.

thanks!

recordtime data1 data2
2011-11-23 02:28:46:5674 88.36 0
2011-11-23 02:28:46:7080 79.53 0
2011-11-23 02:28:46:8173 79.13 0