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Gets or sets the LineStyle object that represents the ILineFormat style.
Use this method to retrieve the current compound line style applied to a shape line, such as Single or ThickBetweenThin.
LineStyle Style { get; set; }
Property Style As LineStyle
IShape connector = worksheet.Shapes.AddConnector(ConnectorType.Straight, 10, 10, 200, 100);
ILineFormat line = connector.Line;
line.Style = LineStyle.Single;
LineStyle style = line.Style;