ArcGIS Pro 2.6 API Reference Guide
GradientSize Property (CIMGradientStroke)

ArcGIS.Core.CIM Namespace > CIMGradientStroke Class : GradientSize Property
Gets or sets how much of the feature is covered by the color scheme. This is either a percentage of the total area which the color scheme spans or the number of page units from the starting point at which the gradient displays.
Syntax
public double GradientSize {get; set;}
Public Property GradientSize As Double
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

CIMGradientStroke Class
CIMGradientStroke Members