LineFillFormat.SetGradientFill Method

Name	Parameters	Description
SetGradientFill(GradientType, IEnumerable<GradientStop>)	gradientType, gradientStops	Applies a complex gradient to a line or a shape’s border.
SetGradientFill(GradientType, Color, Color)	gradientType, color1, color2	Applies a two-color gradient to a line or a shape’s border.