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Gets or sets the depth of the shape's extrusion.
Use this property to determine how far the shape is extruded in three-dimensional formatting.
double Depth { get; set; }
Property Depth As Double
IShape shape = worksheet.Shapes.AddShape(AutoShapeType.Rectangle, 1, 1, 100, 100);
shape.ThreeD.Depth = 7;
double depth = shape.ThreeD.Depth;