C# を使って Excel グラフを作成する方法

using IronXL;
using IronXL.Drawing.Charts;

Imports IronXL
Imports IronXL.Drawing.Charts

using IronXL;
using IronXL.Drawing.Charts;

// Load the existing Excel workbook
WorkBook wb = WorkBook.Load("Chart_Ex.xlsx");
// Use the default worksheet from the workbook
WorkSheet ws = wb.DefaultWorkSheet;

// Create a column chart at the specified range of cells
var chart = ws.CreateChart(ChartType.Column, 10, 15, 25, 20);

// Define the range for the x-axis data
const string xAxis = "A2:A7";

// Add a series for the chart using data in the range and give it a title from the first row
var series = chart.AddSeries(xAxis, "B2:B7");
series.Title = ws["B1"].StringValue;

// Add another series
series = chart.AddSeries(xAxis, "C2:C7");
series.Title = ws["C1"].StringValue;

// Add a third series
series = chart.AddSeries(xAxis, "D2:D7");
series.Title = ws["D1"].StringValue;

// Set the chart title
chart.SetTitle("Column Chart");
// Position the legend at the bottom of the chart
chart.SetLegendPosition(LegendPosition.Bottom);
// Plot the chart with the provided data
chart.Plot();
// Save the workbook with the newly added chart
wb.SaveAs("Exported_Column_Chart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts

' Load the existing Excel workbook
Dim wb As WorkBook = WorkBook.Load("Chart_Ex.xlsx")
' Use the default worksheet from the workbook
Dim ws As WorkSheet = wb.DefaultWorkSheet

' Create a column chart at the specified range of cells
Dim chart = ws.CreateChart(ChartType.Column, 10, 15, 25, 20)

' Define the range for the x-axis data
Const xAxis As String = "A2:A7"

' Add a series for the chart using data in the range and give it a title from the first row
Dim series = chart.AddSeries(xAxis, "B2:B7")
series.Title = ws("B1").StringValue

' Add another series
series = chart.AddSeries(xAxis, "C2:C7")
series.Title = ws("C1").StringValue

' Add a third series
series = chart.AddSeries(xAxis, "D2:D7")
series.Title = ws("D1").StringValue

' Set the chart title
chart.SetTitle("Column Chart")
' Position the legend at the bottom of the chart
chart.SetLegendPosition(LegendPosition.Bottom)
' Plot the chart with the provided data
chart.Plot()
' Save the workbook with the newly added chart
wb.SaveAs("Exported_Column_Chart.xlsx")

// Create a line chart for trend analysis
var lineChart = ws.CreateChart(ChartType.Line, 10, 22, 25, 32);

// Add data series with smooth lines
var trendSeries = lineChart.AddSeries("A2:A7", "B2:B7");
trendSeries.Title = "Q1 Sales Trend";

// Customize chart appearance
lineChart.SetTitle("Quarterly Sales Trend Analysis");
lineChart.SetLegendPosition(LegendPosition.Right);

// You can also create combination charts
var comboChart = ws.CreateChart(ChartType.ColumnClustered, 27, 15, 42, 25);
comboChart.AddSeries("A2:A7", "B2:B7"); // Column series
comboChart.AddSeries("A2:A7", "C2:C7"); // Can be styled as line

comboChart.Plot();

' Create a line chart for trend analysis
Dim lineChart = ws.CreateChart(ChartType.Line, 10, 22, 25, 32)

' Add data series with smooth lines
Dim trendSeries = lineChart.AddSeries("A2:A7", "B2:B7")
trendSeries.Title = "Q1 Sales Trend"

' Customize chart appearance
lineChart.SetTitle("Quarterly Sales Trend Analysis")
lineChart.SetLegendPosition(LegendPosition.Right)

' You can also create combination charts
Dim comboChart = ws.CreateChart(ChartType.ColumnClustered, 27, 15, 42, 25)
comboChart.AddSeries("A2:A7", "B2:B7") ' Column series
comboChart.AddSeries("A2:A7", "C2:C7") ' Can be styled as line

comboChart.Plot()