How can I fix line chart to starting drawing at start of the XAxis and end at the end of XAxis point?

You can draw the chat with start of XAxis by setting the range of chart. Please refer the below code snippet which illustrates this:

C#

this.ChartWebControl1.PrimaryXAxis.RangeType = ChartAxisRangeType.Set;

this.ChartWebControl1.PrimaryXAxis.Range =new MinMaxInfo(0, 100, 20);

this.ChartWebControl1.PrimaryYAxis.RangeType = ChartAxisRangeType.Set;

this.ChartWebControl1.PrimaryYAxis.Range = new MinMaxInfo(0, 250, 50);

VB

Me.ChartWebControl1.PrimaryXAxis.RangeType = ChartAxisRangeType.Set

Me.ChartWebControl1.PrimaryXAxis.Range = New MinMaxInfo(0, 100, 20)

Me.ChartWebControl1.PrimaryYAxis.RangeType = ChartAxisRangeType.Set

Me.ChartWebControl1.PrimaryYAxis.Range = New MinMaxInfo(0, 250, 50)

Please refer the sample in the below link which illustrates the above:"

http://help.syncfusion.com/support/samples/kb/chart.Web/6.1.0.34/71163/71163.zip