IChart Floor Property

<para>//Create worksheet</para><para>Workbook workbook = new Workbook();</para><para>workbook.LoadFromFile("Sample.xlsx");</para><para>Worksheet worksheet = workbook.Worksheets[0];</para><para>//Get chart</para><para>Chart chart = worksheet.Charts[0];</para><para>//Set chart wall</para><para>IChartWallOrFloor floor = chart.Floor;</para><para>//Set color</para><para>floor.Fill.FillType = ShapeFillType.SolidColor;</para><para>floor.Fill.ForeColor = System.Drawing.Color.Red;</para><para>//Save to file</para><para>workbook.SaveToFile("Chart.xlsx");</para>