C# Excel 为图表添加Data Table

比眉伴天荒 2023-10-16 22:15 52阅读 0赞

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 Spire.Xls;
    using System.Drawing;

**步骤详解：**

步骤一：独立创建Excel文件，添加表单。

Workbook workbook = new Workbook();
                workbook.CreateEmptySheets(1);
                Worksheet sheet = workbook.Worksheets[0];

步骤二：为单元格添加样本数据，用于下一步生成图表。

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;

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 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"];

步骤四：添加模拟数据表。

chart.HasDataTable = true;

步骤五：保存文档为2010版Excel。

workbook.SaveToFile("S3.xlsx", ExcelVersion.Version2010);

**代码运行后效果截图：**  
![这里写图片描述][20150910153204363]

全部代码：

using System;
    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");
            }
        }
    }

[Free Spire.XLS]: http://www.e-iceblue.com/Download/download-excel-for-net-free.html
[20150910153204363]: https://img-blog.csdn.net/20150910153204363