/// <summary>
/// Adds a chartsheet to the workbook.
/// </summary>
/// <param name="Name">The name of the worksheet</param>
/// <param name="chartType">The type of chart</param>
/// <returns></returns>
public ExcelChartsheet AddChart(string Name, eChartType chartType)
{
if (ExcelChart.IsTypeStock(chartType))
{
throw (new InvalidOperationException("Please use method AddStockChart for Stock Charts"));
}
return((ExcelChartsheet)AddSheet(Name, true, chartType, null));
}