c# - asp.net chart control shows gap between series -

i have chart dynamically generates series. series represent people. , im using yaxis in stacked bar chart generate each day of month how many people have data. problem if person1 , person3 have data first day of month , person2 has data second day, there gap between person1 , person3.

        foreach (datarow dr in dt.rows)         {             string name = dr.itemarray.getvalue(0).tostring();             int days = (int)dr.itemarray.getvalue(1);             int month = (int)dr.itemarray.getvalue(2);              if (chart1.series.findbyname(name) == null) chart1.series.add(name);              chart1.series[name].points.addxy(days, month);             chart1.series[name].charttype = seriescharttype.stackedbar;             chart1.series[name].tooltip = name;         } 

solution problem here was adding y , x axis using y one. when stopped adding x 1 there no more gaps.