如何在 C# 中創建和編輯 Excel 圖表

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由查克尼思·賓

在 Excel 中，圖表是數據的圖形表示。它是一種視覺工具，用於以更易於理解和有意義的方式顯示和分析數據。 Excel 提供各種圖表類型，例如條形圖、折線圖、圓餅圖等，每種類型都適用於不同類型的數據和分析。

IronXL 支持包含可配置的系列名稱、圖例位置、圖表標題和圖表位置的柱狀圖、散點圖、折線圖、圓餅圖、條形圖和面積圖。

如何在 C# 中創建和編輯 Excel 圖表

下載 C# 程式庫以創建和編輯圖表
準備用於製作圖表的數據
使用 建立圖表 設置圖表類型和位置的方法
使用 新增系列 新增資料系列的方法
使用該繪製圖表 情節 方法

開始使用IronXL

立即在您的專案中使用IronXL，並享受免費試用。

第一步：

建立圖表範例

IronXL 支援柱狀圖、散點圖、折線圖、圓餅圖、條形圖和面積圖。要創建圖表，我們需要分別指定一些事項。

首先使用 CreateChart 方法來指定工作表中的圖表類型和位置。
使用 AddSeries 方法添加系列。此方法也接受單一列的數據，因為對於某些圖表類型來說，這樣足夠了。第一個參數代表水平軸的值。第二個參數代表垂直軸的值。
可以選擇性地指定系列名稱、圖表名稱和圖例位置。
調用 Plot 方法來繪製圖表。此方法將使用添加的所有數據繪製圖表。多次呼叫此方法會導致繪製多個圖表，而不是修改現有的圖表。
讓我們從數據中創建一些圖表 chart.xlsx Excel 文件。以下顯示數據預覽：

柱狀圖

:path=/static-assets/excel/content-code-examples/how-to/create-edit-charts-column-chart.cs

using IronXL;
using IronXL.Drawing.Charts;

WorkBook workBook = WorkBook.Load("chart.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Set the chart type and position
IChart chart = workSheet.CreateChart(ChartType.Column, 5, 5, 20, 10);

string xAxis = "A2:A7";

// Add the series
IChartSeries series = chart.AddSeries(xAxis, "B2:B7");
series.Title = workSheet["B1"].StringValue;

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

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

// Set the chart title
chart.SetTitle("Column Chart");

// Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom);

// Plot the chart
chart.Plot();

workBook.SaveAs("columnChart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts

Private workBook As WorkBook = WorkBook.Load("chart.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

' Set the chart type and position
Private chart As IChart = workSheet.CreateChart(ChartType.Column, 5, 5, 20, 10)

Private xAxis As String = "A2:A7"

' Add the series
Private series As IChartSeries = chart.AddSeries(xAxis, "B2:B7")
series.Title = workSheet("B1").StringValue

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

' Add the series
series = chart.AddSeries(xAxis, "D2:D7")
series.Title = workSheet("D1").StringValue

' Set the chart title
chart.SetTitle("Column Chart")

' Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom)

' Plot the chart
chart.Plot()

workBook.SaveAs("columnChart.xlsx")

VB C#

折線圖

由於折線圖能夠呈現和柱狀圖一樣多的信息，因此在兩者之間切換非常簡單。您只需要更改圖表類型。

:path=/static-assets/excel/content-code-examples/how-to/create-edit-charts-line-chart.cs

using IronXL;
using IronXL.Drawing.Charts;

WorkBook workBook = WorkBook.Load("chart.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Set the chart type and position
IChart chart = workSheet.CreateChart(ChartType.Column, 5, 5, 20, 10);

string xAxis = "A2:A7";

// Add the series
IChartSeries series = chart.AddSeries(xAxis, "B2:B7");
series.Title = workSheet["B1"].StringValue;

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

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

// Set the chart title
chart.SetTitle("Line Chart");

// Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom);

// Plot the chart
chart.Plot();

workBook.SaveAs("lineChart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts

Private workBook As WorkBook = WorkBook.Load("chart.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

' Set the chart type and position
Private chart As IChart = workSheet.CreateChart(ChartType.Column, 5, 5, 20, 10)

Private xAxis As String = "A2:A7"

' Add the series
Private series As IChartSeries = chart.AddSeries(xAxis, "B2:B7")
series.Title = workSheet("B1").StringValue

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

' Add the series
series = chart.AddSeries(xAxis, "D2:D7")
series.Title = workSheet("D1").StringValue

' Set the chart title
chart.SetTitle("Line Chart")

' Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom)

' Plot the chart
chart.Plot()

workBook.SaveAs("lineChart.xlsx")

VB C#

圓餅圖

對於圓餅圖，只需要一列數據。

:path=/static-assets/excel/content-code-examples/how-to/create-edit-charts-pie-chart.cs

using IronXL;
using IronXL.Drawing.Charts;

WorkBook workBook = WorkBook.Load("chart.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Set the chart type and position
IChart chart = workSheet.CreateChart(ChartType.Pie, 5, 5, 20, 10);

string xAxis = "A2:A7";

// Add the series
IChartSeries series = chart.AddSeries(xAxis, "B2:B7");
series.Title = workSheet["B1"].StringValue;

// Set the chart title
chart.SetTitle("Pie Chart");

// Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom);

// Plot the chart
chart.Plot();

workBook.SaveAs("pieChart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts

Private workBook As WorkBook = WorkBook.Load("chart.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

' Set the chart type and position
Private chart As IChart = workSheet.CreateChart(ChartType.Pie, 5, 5, 20, 10)

Private xAxis As String = "A2:A7"

' Add the series
Private series As IChartSeries = chart.AddSeries(xAxis, "B2:B7")
series.Title = workSheet("B1").StringValue

' Set the chart title
chart.SetTitle("Pie Chart")

' Set the legend position
chart.SetLegendPosition(LegendPosition.Bottom)

' Plot the chart
chart.Plot()

workBook.SaveAs("pieChart.xlsx")

VB C#

編輯圖表範例

您可以在現有圖表中編輯一些內容。您可以編輯圖例位置和圖表標題。要編輯圖表，您必須首先通過訪問圖表屬性來檢索圖表，並選擇要編輯的目標圖表。從那裡開始，存取圖表的屬性來進行您的編輯。

:path=/static-assets/excel/content-code-examples/how-to/create-edit-charts-edit-chart.cs

using IronXL;
using IronXL.Drawing.Charts;

WorkBook workBook = WorkBook.Load("pieChart.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Retrieve the chart
IChart chart = workSheet.Charts[0];

// Edit the legend position
chart.SetLegendPosition(LegendPosition.Top);

// Edit the chart title
chart.SetTitle("Edited Chart");

workBook.SaveAs("editedChart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts

Private workBook As WorkBook = WorkBook.Load("pieChart.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

' Retrieve the chart
Private chart As IChart = workSheet.Charts(0)

' Edit the legend position
chart.SetLegendPosition(LegendPosition.Top)

' Edit the chart title
chart.SetTitle("Edited Chart")

workBook.SaveAs("editedChart.xlsx")

VB C#

之前

後

移除圖表範例

要從試算表中移除現有的圖表，首先從工作表物件的Charts屬性中檢索圖表。您將從Charts屬性接收一份圖表列表。將目標圖表對象傳遞給 RemoveChart 方法以移除它。

:path=/static-assets/excel/content-code-examples/how-to/create-edit-charts-remove-chart.cs

using IronXL;
using IronXL.Drawing.Charts;
using System.Collections.Generic;

WorkBook workBook = WorkBook.Load("pieChart.xlsx");
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Retrieve the chart
List<IChart> chart = workSheet.Charts;

// Remove the chart
workSheet.RemoveChart(chart[0]);

workBook.SaveAs("removedChart.xlsx");

Imports IronXL
Imports IronXL.Drawing.Charts
Imports System.Collections.Generic

Private workBook As WorkBook = WorkBook.Load("pieChart.xlsx")
Private workSheet As WorkSheet = workBook.DefaultWorkSheet

' Retrieve the chart
Private chart As List(Of IChart) = workSheet.Charts

' Remove the chart
workSheet.RemoveChart(chart(0))

workBook.SaveAs("removedChart.xlsx")

VB C#

查克尼思·賓

軟體工程師

Chaknith 是開發者界的夏洛克福爾摩斯。他第一次意識到自己可能有個軟體工程的未來，是在他為了娛樂而參加程式挑戰的時候。他的重點是 IronXL 和 IronBarcode，但他也引以為豪的是，他幫助客戶解決所有產品的問題。Chaknith 利用他與客戶直接對話中獲得的知識，以進一步改進產品。他的實際反饋超越了 Jira 工單，並支持產品開發、文件撰寫和行銷，以提升客戶的整體體驗。不在公司時，他通常在學習機器學習、寫程式和徒步旅行。