IChartAxis TextRotationAngle Property

<para>//Create worksheet</para><para>Workbook workbook = new Workbook();</para><para>Worksheet worksheet = workbook.Worksheets[0];</para><para>//Add data</para><para>worksheet.Range["A1"].Text = "Jan";
 worksheet.Range["B1"].Text = "Feb";
 worksheet.Range["C1"].Text = "Mar";
 worksheet.Range["A2"].Text = "10";
 worksheet.Range["B2"].Text = "20";
 worksheet.Range["C2"].Text = "30";</para><para>//Create chart and set range</para><para>Chart chart = worksheet.Charts.Add();</para><para>chart.DataRange = worksheet.Range["A1:C2"];</para><para>//Set chart category axis</para><para>IChartAxis chartAxis =chart.PrimaryCategoryAxis;</para><para>//Set text rotation angle</para><para>chartAxis.TextRotationAngle = 90;</para><para>//Save to file</para><para>workbook.SaveToFile("Chart.xlsx");</para>