Thanks for contacting Syncfusion support. We have analyzed your queries. To achieve your requirements, you can use the stacking column 100 series type. This will render y-axis labels up to 100. And use the below code to remove the upper border from the chart.
chart.ChartAreaMargins = new ChartMargins(1, -1, 1, 1);
In the above code, we have set ChartAreaMargins as (1, -1, 1, 1). This will set top value for chart’s margin as -1. And so top margin won’t render. Please find the output below.
In the below link, we have attached sample for your reference.
Please let us know if you have any concern.