Chart Control Curve Fitting is not showing a full curve in ASP.Net

As a part of my project. I have used chart control in which I'm drawing a regression curve for the series of points. But the curve is not showing fully. Can anyone please help me to solve this issue.

chrt_ScatterPlot.DataManipulator.FinancialFormula(System.Web.UI.DataVisualization.Charting.FinancialFormula.Forecasting, "Linear,1,false,false", dd_Location.SelectedItem.Text, chrt_ScatterPlot.Series["TrendLine"].Name.ToString());