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Gets or sets the path type for the gradient fill.
PathShapeType GradientPathType { get; set; }
Property GradientPathType As PathShapeType
IShape shape = worksheet.Shapes.AddShape(AutoShapeType.Rectangle, 20, 20, 100, 60);
IFillFormat fillFormat = shape.Fill;
fillFormat.TwoColorGradient(GradientStyle.FromCenter, 1);
fillFormat.GradientPathType = PathShapeType.Radial;
PathShapeType pathType = fillFormat.GradientPathType;