C# 建立Excel氣泡圖

氣泡圖（Bubble Chart）是可用於展現三個變量之間的關係。經過繪製x 值， y 值和大小值便可肯定圖表中氣泡的座標及大小。下面經過後端C#代碼及VB.NET代碼展現如何來實如今Excel中建立氣泡圖的方法。

程序環境：

• Visual Studio
• .Net FrameWork 4.5.1
• Spire.XLS for .NET Version 10.12.0

注：編輯代碼前先將Spire.Xls.dll（dll文件可在解壓包Bin文件夾下獲取）添加引用至VS程序，可經過官網下載或者Nuget下載。參考以下引用效果：

 

 

【C#】

using Spire.Xls;
using Spire.Xls.Charts;
using System.Drawing;

namespace CreateBubbleChart_XLS
{
    class Program
    {
        static void Main(string[] args)
        {
            //建立一個Excel工做簿，並獲取第一張工做表
            Workbook wb = new Workbook();
            wb.Version = ExcelVersion.Version2013;
            Worksheet sheet = wb.Worksheets[0];          

            //添加圖表，指定圖表類型
            Chart chart = sheet.Charts.Add();
            chart.ChartType = ExcelChartType.Bubble;
            chart.PrimaryCategoryAxis.Title = "人均消費";
            chart.PrimaryValueAxis.Title = "點評數";

            //設置圖表的名稱和數據
            Spire.Xls.Charts.ChartSerie cs1 = chart.Series.Add("氣泡圖");
            cs1.EnteredDirectlyValues = new object[]{2, 5, 3, 6, 7};
            cs1.EnteredDirectlyCategoryLabels = new object[]{1, 4.5, 1.2, 3.3, 2};
            cs1.EnteredDirectlyBubbles = new object[]{3, 6, 1, 4, 7};           

            //設置圖表位置
            chart.LeftColumn = 4;
            chart.TopRow = 2;
            chart.RightColumn = 12;
            chart.BottomRow = 22;

            //設置圖表標題
            chart.ChartTitle = "人均消費VS點評數";
            chart.ChartTitleArea.IsBold = true;
            chart.ChartTitleArea.Size = 12;    
            chart.Legend.Position = LegendPositionType.Top;

            //保存文檔
            wb.SaveToFile("BubbleChart.xlsx", ExcelVersion.Version2013);
            System.Diagnostics.Process.Start("BubbleChart.xlsx");
        }
    }
}

氣泡圖效果：

 

【vb.net】

Imports Spire.Xls
Imports Spire.Xls.Charts
Imports System.Drawing

Namespace CreateBubbleChart_XLS
    Class Program
        Private Shared Sub Main(args As String())
            '建立一個Excel工做簿，並獲取第一張工做表
            Dim wb As New Workbook()
            wb.Version = ExcelVersion.Version2013
            Dim sheet As Worksheet = wb.Worksheets(0)

            '添加圖表，指定圖表類型
            Dim chart As Chart = sheet.Charts.Add()
            chart.ChartType = ExcelChartType.Bubble
            chart.PrimaryCategoryAxis.Title = "人均消費"
            chart.PrimaryValueAxis.Title = "點評數"

            '設置圖表的名稱和數據
            Dim cs1 As Spire.Xls.Charts.ChartSerie = chart.Series.Add("氣泡圖")
            cs1.EnteredDirectlyValues = New Object() {2, 5, 3, 6, 7}
            cs1.EnteredDirectlyCategoryLabels = New Object() {1, 4.5, 1.2, 3.3, 2}
            cs1.EnteredDirectlyBubbles = New Object() {3, 6, 1, 4, 7}

            '設置圖表位置
            chart.LeftColumn = 4
            chart.TopRow = 2
            chart.RightColumn = 12
            chart.BottomRow = 22

            '設置圖表標題
            chart.ChartTitle = "人均消費VS點評數"
            chart.ChartTitleArea.IsBold = True
            chart.ChartTitleArea.Size = 12
            chart.Legend.Position = LegendPositionType.Top

            '保存文檔
            wb.SaveToFile("BubbleChart.xlsx", ExcelVersion.Version2010)
            System.Diagnostics.Process.Start("BubbleChart.xlsx")
        End Sub
    End Class
End Namespace