Workbook wb = new Workbook();
wb.LoadFromFile("Test.xlsx", ExcelVersion.Version2010);
Worksheet ws = wb.Worksheets[0];
//Create a coulumn clustered chart
Chart chart = ws.Charts.Add(ExcelChartType.ColumnClustered);
//Set region of chart data
chart.DataRange = ws.Range["A1:C5"];
chart.SeriesDataFromRange = false;
//Set position of chart
chart.LeftColumn = 1;
chart.TopRow = 7;
chart.RightColumn = 11;
chart.BottomRow = 30;
3. 设置图表标题格式以及两条坐标轴的格式。
//Chart title
chart.ChartTitle = "Sales market by country";
chart.ChartTitleArea.IsBold = true;
chart.ChartTitleArea.Size = 12;
//Chart primary category axis
chart.PrimaryCategoryAxis.Title = "Country";
chart.PrimaryCategoryAxis.Font.IsBold = true;
chart.PrimaryCategoryAxis.TitleArea.IsBold = true;
//Chart primary value axis
chart.PrimaryValueAxis.Title = "Sales(in Dollars)";
chart.PrimaryValueAxis.HasMajorGridLines = false;
chart.PrimaryValueAxis.MinValue = 1000;
chart.PrimaryValueAxis.TitleArea.IsBold = true;
chart.PrimaryValueAxis.TitleArea.TextRotationAngle = -90;
4. 显示数据标签，并将位置设定为“居中”。
//Format data labels
foreach (ChartSerie cs in chart.Series)
{
cs.Format.Options.IsVaryColor = true;
cs.DataPoints.DefaultDataPoint.DataLabels.HasValue = true;
cs.DataPoints.DefaultDataPoint.DataLabels.Position = DataLabelPositionType.Center;
}
5. 设置图例位置为“底部”，然后保存文件到磁盘。
chart.Legend.Position = LegendPositionType.Bottom;
wb.SaveToFile("Sample.xlsx",ExcelVersion.Version2010);
