Hello naingoo,

I would suggest that you set the margins of the chart axes. You could do this from the chart wizard - under Axes tab, at the top left corner area click Axis Extent and Margins tab. There you could adjust the margins for X and Y axes by dragging the sliders. Also you could access axes margins from code behind:

UltraChart1.Axis.X.Margin.Near.Value = 0;

UltraChart1.Axis.X.Margin.Far.Value = 0;

UltraChart1.Axis.Y.Margin.Near.Value = 0;

UltraChart1.Axis.Y.Margin.Far.Value = 0;

Please let me know if this helps.