Excel中的图表能够将数据可视化，方便我们比较分析数据。但也有一定的局限，例如：不能够直接从图表中读出原来数据的准确值。Excel提供的解决方案是，在图表下方添加一个模拟运算表，即在坐标轴下方添加包含建表时所依照的数据的表格。本文旨在介绍通过免费的Free Spire.XLS在C#独立创建Excel文件，添加数据，生成图表，并添加模拟运算表。
需要使用的命名空间：
using System.Drawing;
步骤详解：
步骤1：创建Excel文件，添加表单。
workbook.CreateEmptySheets(1);
Worksheet sheet = workbook.Worksheets[0];
步骤二：为单元格添加样本数据，用于一下不生成图表。
sheet.Range[“A1“].Value = “月份“;
sheet.Range[“A2“].Value = “一月“;
sheet.Range[“A3“].Value = “二月“;
sheet.Range[“A4“].Value = “三月“;
sheet.Range[“A5“].Value = “四月“;
sheet.Range[“A6“].Value = “五月“;
sheet.Range[“A7“].Value = “六月“;
sheet.Range[“B1“].Value = “小王“;
sheet.Range[“B2“].NumberValue = 3.3;
sheet.Range[“B3“].NumberValue = 2.5;
sheet.Range[“B4“].NumberValue = 2.0;
sheet.Range[“B5“].NumberValue = 3.7;
sheet.Range[“B6“].NumberValue = 4.5;
sheet.Range[“B7“].NumberValue = 4.0;
sheet.Range[“C1“].Value = “小新“;
sheet.Range[“C2“].NumberValue = 3.8;
sheet.Range[“C3“].NumberValue = 3.2;
sheet.Range[“C4“].NumberValue = 1.7;
sheet.Range[“C5“].NumberValue = 3.5;
sheet.Range[“C6“].NumberValue = 4.5;
sheet.Range[“C7“].NumberValue = 4.3;
sheet.Range[“D1“].Value = “小白“;
sheet.Range[“D2“].NumberValue = 3.0;
sheet.Range[“D3“].NumberValue = 2.8;
sheet.Range[“D4“].NumberValue = 3.5;
sheet.Range[“D5“].NumberValue = 2.3;
sheet.Range[“D6“].NumberValue = 3.3;
sheet.Range[“D7“].NumberValue = 3.8;
步骤三：利用步骤二填充的数据，生成柱形图，设置其在Excel中的位置，图表名称等。
chart.DataRange = sheet.Range[“B1:D7“];
chart.SeriesDataFromRange = false;
chart.TopRow = 7;
chart.BottomRow = 28;
chart.LeftColumn = 3;
chart.RightColumn =11;
chart.ChartTitle = “带模拟数据表的柱状图示例“;
chart.ChartTitleArea.IsBold = true;
chart.ChartTitleArea.Size = 12;
Spire.Xls.Charts.ChartSerie cs1 = chart.Series[0];
cs1.CategoryLabels = sheet.Range[“A2:A7“];
步骤四：为柱状图添加模拟数据表。
步骤五：保存文档为2010版Excel。
完整代码：
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Xls;
using System.Drawing;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
Workbook workbook = new Workbook();
workbook.CreateEmptySheets(1);
Worksheet sheet = workbook.Worksheets[0];
sheet.Name = “Demo“;
sheet.Range[“A1“].Value = “月份“;
sheet.Range[“A2“].Value = “一月“;
sheet.Range[“A3“].Value = “二月“;
sheet.Range[“A4“].Value = “三月“;
sheet.Range[“A5“].Value = “四月“;
sheet.Range[“A6“].Value = “五月“;
sheet.Range[“A7“].Value = “六月“;
sheet.Range[“B1“].Value = “小王“;
sheet.Range[“B2“].NumberValue = 3.3;
sheet.Range[“B3“].NumberValue = 2.5;
sheet.Range[“B4“].NumberValue = 2.0;
sheet.Range[“B5“].NumberValue = 3.7;
sheet.Range[“B6“].NumberValue = 4.5;
sheet.Range[“B7“].NumberValue = 4.0;
sheet.Range[“C1“].Value = “小新“;
sheet.Range[“C2“].NumberValue = 3.8;
sheet.Range[“C3“].NumberValue = 3.2;
sheet.Range[“C4“].NumberValue = 1.7;
sheet.Range[“C5“].NumberValue = 3.5;
sheet.Range[“C6“].NumberValue = 4.5;
sheet.Range[“C7“].NumberValue = 4.3;
sheet.Range[“D1“].Value = “小白“;
sheet.Range[“D2“].NumberValue = 3.0;
sheet.Range[“D3“].NumberValue = 2.8;
sheet.Range[“D4“].NumberValue = 3.5;
sheet.Range[“D5“].NumberValue = 2.3;
sheet.Range[“D6“].NumberValue = 3.3;
sheet.Range[“D7“].NumberValue = 3.8;
Chart chart = sheet.Charts.Add(ExcelChartType.Column3DClustered);
chart.DataRange = sheet.Range[“B1:D7“];
chart.SeriesDataFromRange = false;
chart.TopRow = 7;
chart.BottomRow = 28;
chart.LeftColumn = 3;
chart.RightColumn =11;
chart.ChartTitle = “带模拟数据表的柱状图示例“;
chart.ChartTitleArea.IsBold = true;
chart.ChartTitleArea.Size = 12;
Spire.Xls.Charts.ChartSerie cs1 = chart.Series[0];
cs1.CategoryLabels = sheet.Range[“A2:A7“];
chart.HasDataTable = true;
workbook.SaveToFile(“S3.xlsx“, ExcelVersion.Version2010);
System.Diagnostics.Process.Start(“S3.xlsx“);
}
}
}
