public static void Run()
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_Charts();
// Create directory if it is not already present.
bool IsExists = System.IO.Directory.Exists(dataDir);
if (!IsExists)
System.IO.Directory.CreateDirectory(dataDir);
// Creating empty presentation
Presentation pres = new Presentation();
// Creating a clustered column chart
IChart chart = pres.Slides[0].Shapes.AddChart(ChartType.ClusteredColumn, 20, 20, 500, 400);
// Adding ponential trend line for chart series 1
ITrendline tredLinep = chart.ChartData.Series[0].TrendLines.Add(TrendlineType.Exponential);
tredLinep.DisplayEquation = false;
tredLinep.DisplayRSquaredValue = false;
// Adding Linear trend line for chart series 1
ITrendline tredLineLin = chart.ChartData.Series[0].TrendLines.Add(TrendlineType.Linear);
tredLineLin.TrendlineType = TrendlineType.Linear;
tredLineLin.Format.Line.FillFormat.FillType = FillType.Solid;
tredLineLin.Format.Line.FillFormat.SolidFillColor.Color = Color.Red;
// Adding Logarithmic trend line for chart series 2
ITrendline tredLineLog = chart.ChartData.Series[1].TrendLines.Add(TrendlineType.Logarithmic);
tredLineLog.TrendlineType = TrendlineType.Logarithmic;
tredLineLog.AddTextFrameForOverriding("New log trend line");
// Adding MovingAverage trend line for chart series 2
ITrendline tredLineMovAvg = chart.ChartData.Series[1].TrendLines.Add(TrendlineType.MovingAverage);
tredLineMovAvg.TrendlineType = TrendlineType.MovingAverage;
tredLineMovAvg.Period = 3;
tredLineMovAvg.TrendlineName = "New TrendLine Name";
// Adding Polynomial trend line for chart series 3
ITrendline tredLinePol = chart.ChartData.Series[2].TrendLines.Add(TrendlineType.Polynomial);
tredLinePol.TrendlineType = TrendlineType.Polynomial;
tredLinePol.Forward = 1;
tredLinePol.Order = 3;
// Adding Power trend line for chart series 3
ITrendline tredLinePower = chart.ChartData.Series[1].TrendLines.Add(TrendlineType.Power);
tredLinePower.TrendlineType = TrendlineType.Power;
tredLinePower.Backward = 1;
// Saving presentation
pres.Save(dataDir + "ChartTrendLines_out.pptx", SaveFormat.Pptx);
}
}