
如何在 C# 中建立 Excel 樞紐分析表
以程式方式使用Excel樞紐分析表是需要分析和計算源資料的商業應用程式中的常見需求。 雖然Microsoft的Excel Interop一直是用於在Excel檔案中建立樞紐分析表的傳統方法,但現代解決方案如IronXL提供了顯著的優勢。 本指南詳細介紹了兩種方法,並提供實用範例來幫助您使用C# Interop在Excel中建立樞紐分析表或選擇更好的替代方案。
了解兩種方法
什麼是Excel Interop?
Excel Interop使用COM(組件物件模型)直接透過C#控制Microsoft Excel。 這需要在系統上安裝Office,並實質上將Excel自動化,就像使用者在與應用程式互動一樣。 每個工作表、工作簿和單元格都成為可通過程式碼操控的物件。
什麼是IronXL?
IronXL是一個獨立的.NET程式庫,可以讀取、編輯和建立Excel文件,而不需要Microsoft Office。它可以跨Windows、Linux、macOS和Docker容器工作,非常適合現代部署場景。 您可以開啟、儲存和匯出資料,而不需要COM interop的開銷。
設定您的環境
對於Excel Interop
對於IronXL
或者,使用NuGet套件管理器UI,搜尋"IronXL.Excel"並點擊安裝。 您還可以通過.NET CLI與命令參數安裝,或直接從GitHub引用。
這兩個程式庫均可通過NuGet獲得。 請注意,Excel Interop需要完整的Microsoft Office安裝,而IronXL可獨立操作。 在繼續之前,確保您的系統符合要求。
使用C# Interop以程式方式建立Excel樞紐分析表
以下是一個完整範例,展示如何使用傳統的Interop方法以程式方式建立樞紐分析表:
using Excel = Microsoft.Office.Interop.Excel;
class Program
{
static void Main(string[] args)
{
// Create Excel application instance
var excelApp = new Excel.Application();
var workbook = excelApp.Workbooks.Add();
var dataSheet = (Excel.Worksheet)workbook.Worksheets[1];
var pivotSheet = (Excel.Worksheet)workbook.Worksheets.Add();
// Add header row and sample data
dataSheet.Cells[1, 1] = "Product";
dataSheet.Cells[1, 2] = "Region";
dataSheet.Cells[1, 3] = "Sales";
// ... populate data rows with values
// Add sample data rows
dataSheet.Cells[2, 1] = "Laptop";
dataSheet.Cells[2, 2] = "North";
dataSheet.Cells[2, 3] = 1200;
dataSheet.Cells[3, 1] = "Laptop";
dataSheet.Cells[3, 2] = "South";
dataSheet.Cells[3, 3] = 1500;
dataSheet.Cells[4, 1] = "Phone";
dataSheet.Cells[4, 2] = "North";
dataSheet.Cells[4, 3] = 800;
dataSheet.Cells[5, 1] = "Phone";
dataSheet.Cells[5, 2] = "South";
dataSheet.Cells[5, 3] = 950;
dataSheet.Cells[6, 1] = "Tablet";
dataSheet.Cells[6, 2] = "East";
dataSheet.Cells[6, 3] = 600;
dataSheet.Cells[7, 1] = "Tablet";
dataSheet.Cells[7, 2] = "West";
dataSheet.Cells[7, 3] = 750;
dataSheet.Cells[8, 1] = "Monitor";
dataSheet.Cells[8, 2] = "North";
dataSheet.Cells[8, 3] = 400;
dataSheet.Cells[9, 1] = "Monitor";
dataSheet.Cells[9, 2] = "South";
dataSheet.Cells[9, 3] = 500;
dataSheet.Cells[10, 1] = "Keyboard";
dataSheet.Cells[10, 2] = "East";
dataSheet.Cells[10, 3] = 300;
// Create pivot cache from source data range
Excel.Range dataRange = dataSheet.Range["A1:C10"];
Excel.PivotCache pivotCache = workbook.PivotCaches().Create(
Excel.XlPivotTableSourceType.xlDatabase, dataRange);
// Create PivotTable at specific location
Excel.PivotTables pivotTables = (Excel.PivotTables)pivotSheet.PivotTables();
Excel.PivotTable pivotTable = pivotTables.Add(
pivotCache, pivotSheet.Range["A3"], "SalesPivot");
// Configure pivot table fields - row and column headers
((Excel.PivotField)pivotTable.PivotFields("Product")).Orientation =
Excel.XlPivotFieldOrientation.xlRowField;
((Excel.PivotField)pivotTable.PivotFields("Region")).Orientation =
Excel.XlPivotFieldOrientation.xlColumnField;
((Excel.PivotField)pivotTable.PivotFields("Sales")).Orientation =
Excel.XlPivotFieldOrientation.xlDataField;
// Configure grand totals and formatting
pivotTable.RowGrand = true;
pivotTable.ColumnGrand = true;
// Save the Excel file
workbook.SaveAs("pivot_interop.xlsx");
workbook.Close();
excelApp.Quit();
// Critical: Release COM objects to avoid errors
#if WINDOWS
Marshal.ReleaseComObject(pivotTable);
Marshal.ReleaseComObject(pivotSheet);
Marshal.ReleaseComObject(dataSheet);
Marshal.ReleaseComObject(workbook);
Marshal.ReleaseComObject(excelApp);
#endif
}
}Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Runtime.InteropServices
Class Program
Shared Sub Main(ByVal args() As String)
' Create Excel application instance
Dim excelApp As New Excel.Application()
Dim workbook As Excel.Workbook = excelApp.Workbooks.Add()
Dim dataSheet As Excel.Worksheet = CType(workbook.Worksheets(1), Excel.Worksheet)
Dim pivotSheet As Excel.Worksheet = CType(workbook.Worksheets.Add(), Excel.Worksheet)
' Add header row and sample data
dataSheet.Cells(1, 1) = "Product"
dataSheet.Cells(1, 2) = "Region"
dataSheet.Cells(1, 3) = "Sales"
' ... populate data rows with values
' Add sample data rows
dataSheet.Cells(2, 1) = "Laptop"
dataSheet.Cells(2, 2) = "North"
dataSheet.Cells(2, 3) = 1200
dataSheet.Cells(3, 1) = "Laptop"
dataSheet.Cells(3, 2) = "South"
dataSheet.Cells(3, 3) = 1500
dataSheet.Cells(4, 1) = "Phone"
dataSheet.Cells(4, 2) = "North"
dataSheet.Cells(4, 3) = 800
dataSheet.Cells(5, 1) = "Phone"
dataSheet.Cells(5, 2) = "South"
dataSheet.Cells(5, 3) = 950
dataSheet.Cells(6, 1) = "Tablet"
dataSheet.Cells(6, 2) = "East"
dataSheet.Cells(6, 3) = 600
dataSheet.Cells(7, 1) = "Tablet"
dataSheet.Cells(7, 2) = "West"
dataSheet.Cells(7, 3) = 750
dataSheet.Cells(8, 1) = "Monitor"
dataSheet.Cells(8, 2) = "North"
dataSheet.Cells(8, 3) = 400
dataSheet.Cells(9, 1) = "Monitor"
dataSheet.Cells(9, 2) = "South"
dataSheet.Cells(9, 3) = 500
dataSheet.Cells(10, 1) = "Keyboard"
dataSheet.Cells(10, 2) = "East"
dataSheet.Cells(10, 3) = 300
' Create pivot cache from source data range
Dim dataRange As Excel.Range = dataSheet.Range("A1:C10")
Dim pivotCache As Excel.PivotCache = workbook.PivotCaches().Create(Excel.XlPivotTableSourceType.xlDatabase, dataRange)
' Create PivotTable at specific location
Dim pivotTables As Excel.PivotTables = CType(pivotSheet.PivotTables(), Excel.PivotTables)
Dim pivotTable As Excel.PivotTable = pivotTables.Add(pivotCache, pivotSheet.Range("A3"), "SalesPivot")
' Configure pivot table fields - row and column headers
CType(pivotTable.PivotFields("Product"), Excel.PivotField).Orientation = Excel.XlPivotFieldOrientation.xlRowField
CType(pivotTable.PivotFields("Region"), Excel.PivotField).Orientation = Excel.XlPivotFieldOrientation.xlColumnField
CType(pivotTable.PivotFields("Sales"), Excel.PivotField).Orientation = Excel.XlPivotFieldOrientation.xlDataField
' Configure grand totals and formatting
pivotTable.RowGrand = True
pivotTable.ColumnGrand = True
' Save the Excel file
workbook.SaveAs("pivot_interop.xlsx")
workbook.Close()
excelApp.Quit()
' Critical: Release COM objects to avoid errors
#If WINDOWS Then
Marshal.ReleaseComObject(pivotTable)
Marshal.ReleaseComObject(pivotSheet)
Marshal.ReleaseComObject(dataSheet)
Marshal.ReleaseComObject(workbook)
Marshal.ReleaseComObject(excelApp)
#End If
End Sub
End Class此程式碼建立一個Excel應用程式,新增一個包含來源資料的工作表(包括標題行),設立樞紐快取,建立樞紐分析表物件並配置字段方向。 清理部分至關重要——未能釋放COM物件將導致記憶體洩漏。 每個單元格、範圍和工作表必須正確處理,以避免運行時錯誤。
IronXL的替代方法
IronXL採用不同的方法,直接處理Excel文件格式。 以下是程式化獲得相似分析結果的方法:
using IronXL;
using System.Linq;
class Program
{
static void Main(string[] args)
{
// Create workbook and add worksheet with data
WorkBook workbook = WorkBook.Create();
WorkSheet sheet = workbook.CreateWorkSheet("Data");
// Add header row to define column structure
sheet["A1"].Value = "Product";
sheet["B1"].Value = "Region";
sheet["C1"].Value = "Sales";
// Add sample data to cells
sheet["A2"].Value = "Widget";
sheet["B2"].Value = "North";
sheet["C2"].Value = 1500;
// ... continue to add more data rows
sheet["A3"].Value = "Laptop";
sheet["B3"].Value = "South";
sheet["C3"].Value = 1500;
sheet["A4"].Value = "Phone";
sheet["B4"].Value = "North";
sheet["C4"].Value = 800;
sheet["A5"].Value = "Phone";
sheet["B5"].Value = "South";
sheet["C5"].Value = 950;
sheet["A6"].Value = "Tablet";
sheet["B6"].Value = "East";
sheet["C6"].Value = 600;
sheet["A7"].Value = "Tablet";
sheet["B7"].Value = "West";
sheet["C7"].Value = 750;
sheet["A8"].Value = "Monitor";
sheet["B8"].Value = "North";
sheet["C8"].Value = 400;
sheet["A9"].Value = "Monitor";
sheet["B9"].Value = "South";
sheet["C9"].Value = 500;
sheet["A10"].Value = "Keyboard";
sheet["B10"].Value = "East";
sheet["C10"].Value = 300;
// Create summary analysis worksheet
var summarySheet = workbook.CreateWorkSheet("Summary");
// Group and calculate aggregated data
var data = sheet["A1:C10"].ToDataTable(true);
var productSummary = data.AsEnumerable()
.GroupBy(row => row.Field<string>("Product"))
.Select((group, index) => new {
Product = group.Key,
TotalSales = group.Sum(r => Convert.ToDecimal(r["Sales"])),
Count = group.Count(),
RowIndex = index + 2
});
// Write column headers for summary
summarySheet["A1"].Value = "Product Summary";
summarySheet["A2"].Value = "Product";
summarySheet["B2"].Value = "Total Sales";
summarySheet["C2"].Value = "Count";
// Export results to cells
foreach (var item in productSummary)
{
summarySheet[$"A{item.RowIndex + 1}"].Value = item.Product;
summarySheet[$"B{item.RowIndex + 1}"].Value = item.TotalSales;
summarySheet[$"C{item.RowIndex + 1}"].Value = item.Count;
}
// Apply number formatting and style
summarySheet["B:B"].FormatString = "$#,##0.00";
// Save the xlsx file
workbook.SaveAs("analysis_ironxl.xlsx");
}
}Imports IronXL
Imports System.Linq
Class Program
Shared Sub Main(args As String())
' Create workbook and add worksheet with data
Dim workbook As WorkBook = WorkBook.Create()
Dim sheet As WorkSheet = workbook.CreateWorkSheet("Data")
' Add header row to define column structure
sheet("A1").Value = "Product"
sheet("B1").Value = "Region"
sheet("C1").Value = "Sales"
' Add sample data to cells
sheet("A2").Value = "Widget"
sheet("B2").Value = "North"
sheet("C2").Value = 1500
' ... continue to add more data rows
sheet("A3").Value = "Laptop"
sheet("B3").Value = "South"
sheet("C3").Value = 1500
sheet("A4").Value = "Phone"
sheet("B4").Value = "North"
sheet("C4").Value = 800
sheet("A5").Value = "Phone"
sheet("B5").Value = "South"
sheet("C5").Value = 950
sheet("A6").Value = "Tablet"
sheet("B6").Value = "East"
sheet("C6").Value = 600
sheet("A7").Value = "Tablet"
sheet("B7").Value = "West"
sheet("C7").Value = 750
sheet("A8").Value = "Monitor"
sheet("B8").Value = "North"
sheet("C8").Value = 400
sheet("A9").Value = "Monitor"
sheet("B9").Value = "South"
sheet("C9").Value = 500
sheet("A10").Value = "Keyboard"
sheet("B10").Value = "East"
sheet("C10").Value = 300
' Create summary analysis worksheet
Dim summarySheet = workbook.CreateWorkSheet("Summary")
' Group and calculate aggregated data
Dim data = sheet("A1:C10").ToDataTable(True)
Dim productSummary = data.AsEnumerable() _
.GroupBy(Function(row) row.Field(Of String)("Product")) _
.Select(Function(group, index) New With {
.Product = group.Key,
.TotalSales = group.Sum(Function(r) Convert.ToDecimal(r("Sales"))),
.Count = group.Count(),
.RowIndex = index + 2
})
' Write column headers for summary
summarySheet("A1").Value = "Product Summary"
summarySheet("A2").Value = "Product"
summarySheet("B2").Value = "Total Sales"
summarySheet("C2").Value = "Count"
' Export results to cells
For Each item In productSummary
summarySheet($"A{item.RowIndex + 1}").Value = item.Product
summarySheet($"B{item.RowIndex + 1}").Value = item.TotalSales
summarySheet($"C{item.RowIndex + 1}").Value = item.Count
Next
' Apply number formatting and style
summarySheet("B:B").FormatString = "$#,##0.00"
' Save the xlsx file
workbook.SaveAs("analysis_ironxl.xlsx")
End Sub
End Class此IronXL範例展示如何建立工作簿、新增工作表、將資料填入單元格以及進行聚合分析。 程式碼按產品分組資料,計算總和和計數,建立摘要報告。 無需管理COM物件,方法為簡單的.NET集合,自動處理記憶體。
輸出


主要差異和考慮
部署需求
Excel Interop需要:
-
安裝Microsoft Excel並有有效授權
-
Windows操作系統
-
適當的COM權限和設置
-
Office自動化的伺服器配置 IronXL需要:
-
僅需IronXL程式庫包
-
支援.NET的任何平台都可以工作
-
不需要Office安裝或授權
-
精簡的部署過程

程式碼質量和維護
Interop涉及小心管理COM物件,以避免記憶體洩漏和錯誤。 每個建立的Excel物件必須使用正確的方法明確釋放。 IronXL使用標準的.NET物件並自動進行垃圾回收,降低了資源問題的風險。
錯誤處理
使用Interop時,錯誤通常與Excel可用性、版本差異或COM故障相關。 IronXL錯誤為標準的.NET異常,使得除錯更直接。 您可以依靠熟悉的try-catch模式,而無需擔心COM特定問題。
最佳實踐和建議
在以下情況選擇Excel Interop:
-
您需要精確的Excel樞紐分析表功能,包含所有格式選項
-
系統中保證可用Excel
-
僅在Windows桌面應用程式上工作
-
傳統程式碼需求 在以下情況選擇IronXL:
-
構建伺服器應用程式或網路解決方案
-
需要跨平台相容性
-
需要無需COM開銷的可靠性性能
-
部署到容器或雲環境
存取IronXL文件以了解更多實施細節。 如有疑問或需要支援,請聯系Iron Software團隊。
結論
雖然C# Interop提供直接存取Excel中建立樞紐分析表功能,但它具有部署限制和複雜性。 IronXL提供了一個現代替代方案,簡化了Excel文件操作,同時提供隨處運行在支援.NET的彈性。
對於構建新應用程式或現代化現有解決方案的開發者而言,IronXL的方法消除了COM Interop的負擔,同時提供強大的資料操作能力。 無論您需要讀取、編輯還是匯出Excel資料,IronXL都提供了一個更乾淨的解決方案。
開始使用IronXL的免費試用以體驗不同,或探索教程以了解更多範例。 準備就緒進行部署嗎? 查看授權選項以選擇適合您任務的套件。

Curtis Chau擁有Carleton大學的電腦科學學士學位,專精於前端開發,擁有Node.js、TypeScript、JavaScript和React的專業知識。Curtis熱衷於建立直觀且美觀的使用者介面,喜愛使用現代框架並建立結構良好、視覺吸引力的手冊。
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