Trendline Binding Sample Description This sample demostrates how to use C1BubbleChartBinding to draw a trendline by setting following properties: TrendlineFitType - sepcifies the type of the trendline. TrendlineSampleCount - specifies the sample count for function calculation. It works only if the TrendlineFitType is polynom, power, exponent, logarithmic and fourier. TrendlineOrder - defines the number of terms in polynom equation. It works only if the TrendlineFitType is polynom, power, exponent, logarithmic and fourier. Documentation