c# - StackedColumn chart is flying -

i trying implement stackedcolumn type chart in project, find understand how assign different series.

this demo purpose code:

for (int = 1; <= 3; i++) {     (int = 0; < 5; a++)     {         string item = "boo" + i.tostring() + a.tostring();          chart1.series.add(item);         chart1.series[item].charttype = seriescharttype.stackedcolumn;         chart1.series[item].points.addxy(i, 100.0);     } } 

however, produces flying 3 stacked columns instead of 3 equal stacked columns:

however, if remove seriescharttype.stackedcolumn (and use default) works fine , go ground. how should make them go bottom using stackedcolumn?

you creating chart 15 series, each series has 1 data point. trying achieve? example if wanted have 3 series, each 5 data points should this:

for (int = 1; <= 3; i++) {     // add series chart     string item = "boo" + i.tostring();     chart1.series.add(item);     chart1.series[item].charttype = seriescharttype.stackedcolumn;     (int = 1; <= 5; a++)     {         // add 5 points current series          chart1.series[item].points.addxy(a, 100.0);     } }