如何使用 C# 在 Excel 中選取範圍
IronXL 讓 C# 開發人員能夠在不依賴 Office Interop 的情況下,選取並操作 Excel 的範圍、列與欄。 請使用簡單的語法,例如 workSheet["A1:C3"] 來選取範圍、GetRow() 來選取列,以及 GetColumn() 來選取欄。
快速入門:在 IronXL 中以單行選取儲存格範圍
在 IronXL 工作表中,只需單次呼叫 GetRange,即可擷取如"A1:C3"這類矩形範圍——無需迴圈,輕鬆簡單。 這是同時操作多個儲存格的最快方法。
簡化工作流程(5 個步驟)
- 下載 C# 函式庫以選取範圍
- 在
WorkSheet物件後直接使用 workSheet["A2:B8"] 來選取一組儲存格 - 使用
GetRow方法選取工作表中的一行 - 使用
GetColumn方法選取指定工作表的一欄 - 使用
+運算子輕鬆組合範圍
如何在 IronXL 中選取不同類型的範圍?
透過 IronXL,您可以對選定的範圍執行各種操作,例如排序、計算和彙總。 此函式庫提供直觀的範圍選取方法,既能模擬 Excel 的原生功能,同時也提供程式化的控制能力。
範圍選取是許多 Excel 操作的基礎。 無論是進行數學運算、套用格式,還是擷取資料,選取正確的儲存格都是第一步。IronXL 透過其靈活的範圍選取 API,讓這個過程變得簡單直觀。
+ 運算子,將多個 IronXl.Ranges.Range 結合使用。如何選取矩形範圍的儲存格?
若要選取從儲存格 A2 到 B8 的範圍,您可以使用以下程式碼:
:path=/static-assets/excel/content-code-examples/how-to/select-range-range.cs
using IronXL;
using System.Linq;
WorkBook workBook = WorkBook.Load("sample.xls");
WorkSheet workSheet = workBook.WorkSheets.First();
// Get range from worksheet
var range = workSheet["A2:B8"];
Imports IronXL
Imports System.Linq
Private workBook As WorkBook = WorkBook.Load("sample.xls")
Private workSheet As WorkSheet = workBook.WorkSheets.First()
' Get range from worksheet
Private range = workSheet("A2:B8")
處理選取範圍
選取範圍後,IronXL 提供多種可執行的操作:
using IronXL;
using System;
using System.Linq;
// Load an existing spreadsheet
WorkBook workBook = WorkBook.Load("sample.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Select a range and perform operations
var range = workSheet["A1:C5"];
// Apply formatting to the entire range
range.Style.BackgroundColor = "#E8F5E9";
range.Style.Font.Bold = true;
// Iterate through cells in the range
foreach (var cell in range)
{
Console.WriteLine($"Cell {cell.AddressString}: {cell.Value}");
}
// Get sum of numeric values in the range
decimal sum = range.Sum();
Console.WriteLine($"Sum of range: {sum}");
using IronXL;
using System;
using System.Linq;
// Load an existing spreadsheet
WorkBook workBook = WorkBook.Load("sample.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Select a range and perform operations
var range = workSheet["A1:C5"];
// Apply formatting to the entire range
range.Style.BackgroundColor = "#E8F5E9";
range.Style.Font.Bold = true;
// Iterate through cells in the range
foreach (var cell in range)
{
Console.WriteLine($"Cell {cell.AddressString}: {cell.Value}");
}
// Get sum of numeric values in the range
decimal sum = range.Sum();
Console.WriteLine($"Sum of range: {sum}");
Imports IronXL
Imports System
Imports System.Linq
' Load an existing spreadsheet
Dim workBook As WorkBook = WorkBook.Load("sample.xlsx")
Dim workSheet As WorkSheet = workBook.WorkSheets.First()
' Select a range and perform operations
Dim range = workSheet("A1:C5")
' Apply formatting to the entire range
range.Style.BackgroundColor = "#E8F5E9"
range.Style.Font.Bold = True
' Iterate through cells in the range
For Each cell In range
Console.WriteLine($"Cell {cell.AddressString}: {cell.Value}")
Next
' Get sum of numeric values in the range
Dim sum As Decimal = range.Sum()
Console.WriteLine($"Sum of range: {sum}")
若需執行更複雜的試算表操作,請參閱完整的 API 文件。
如何選取整行?
若要選取第 4 行,您可以使用 GetRow(3) 方法並採用從零開始的索引。 這將包含第 4 行中的所有儲存格,即使其他行中對應的儲存格為空。
:path=/static-assets/excel/content-code-examples/how-to/select-range-row.cs
using IronXL;
using System.Linq;
WorkBook workBook = WorkBook.Load("sample.xls");
WorkSheet workSheet = workBook.WorkSheets.First();
// Get row from worksheet
var row = workSheet.GetRow(3);
Imports IronXL
Imports System.Linq
Private workBook As WorkBook = WorkBook.Load("sample.xls")
Private workSheet As WorkSheet = workBook.WorkSheets.First()
' Get row from worksheet
Private row = workSheet.GetRow(3)
當您需要逐行處理資料時,行選取功能特別實用。例如,在載入試算表資料進行分析時:
using IronXL;
using System;
WorkBook workBook = WorkBook.Load("data.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Process each row
for (int i = 0; i < workSheet.RowCount; i++)
{
var row = workSheet.GetRow(i);
// Skip empty rows
if (row.IsEmpty) continue;
// Process row data
foreach (var cell in row)
{
// Your processing logic here
Console.Write($"{cell.Value}\t");
}
Console.WriteLine();
}
using IronXL;
using System;
WorkBook workBook = WorkBook.Load("data.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Process each row
for (int i = 0; i < workSheet.RowCount; i++)
{
var row = workSheet.GetRow(i);
// Skip empty rows
if (row.IsEmpty) continue;
// Process row data
foreach (var cell in row)
{
// Your processing logic here
Console.Write($"{cell.Value}\t");
}
Console.WriteLine();
}
Imports IronXL
Imports System
Imports System.Linq
Dim workBook As WorkBook = WorkBook.Load("data.xlsx")
Dim workSheet As WorkSheet = workBook.WorkSheets.First()
' Process each row
For i As Integer = 0 To workSheet.RowCount - 1
Dim row = workSheet.GetRow(i)
' Skip empty rows
If row.IsEmpty Then Continue For
' Process row data
For Each cell In row
' Your processing logic here
Console.Write($"{cell.Value}" & vbTab)
Next
Console.WriteLine()
Next
如何選取整欄?
若要選取 C 欄,您可以使用 GetColumn(2) 方法,或將範圍位址指定為 workSheet["C:C"]。 與 GetRow 方法相同,此方法將包含所有相關儲存格,無論其是否位於指定欄位中。
:path=/static-assets/excel/content-code-examples/how-to/select-range-column.cs
using IronXL;
using System.Linq;
WorkBook workBook = WorkBook.Load("sample.xls");
WorkSheet workSheet = workBook.WorkSheets.First();
// Get column from worksheet
var column = workSheet.GetColumn(2);
Imports IronXL
Imports System.Linq
Private workBook As WorkBook = WorkBook.Load("sample.xls")
Private workSheet As WorkSheet = workBook.WorkSheets.First()
' Get column from worksheet
Private column = workSheet.GetColumn(2)
在處理財務報告或資料庫匯出等欄位式資料時,欄位選取功能極具價值。 您可能在建立包含計算欄位的全新試算表時使用此功能:
using IronXL;
using System;
// Create a new workbook
WorkBook workBook = WorkBook.Create();
WorkSheet workSheet = workBook.CreateWorkSheet("Data");
// Add header row
workSheet["A1"].Value = "Quantity";
workSheet["B1"].Value = "Price";
workSheet["C1"].Value = "Total";
// Add sample data
for (int i = 2; i <= 10; i++)
{
workSheet[$"A{i}"].Value = i - 1;
workSheet[$"B{i}"].Value = 10.5 * (i - 1);
}
// Select the Total column and apply formula
var totalColumn = workSheet.GetColumn(2); // Column C
for (int i = 2; i <= 10; i++)
{
workSheet[$"C{i}"].Formula = $"=A{i}*B{i}";
}
workBook.SaveAs("calculations.xlsx");
using IronXL;
using System;
// Create a new workbook
WorkBook workBook = WorkBook.Create();
WorkSheet workSheet = workBook.CreateWorkSheet("Data");
// Add header row
workSheet["A1"].Value = "Quantity";
workSheet["B1"].Value = "Price";
workSheet["C1"].Value = "Total";
// Add sample data
for (int i = 2; i <= 10; i++)
{
workSheet[$"A{i}"].Value = i - 1;
workSheet[$"B{i}"].Value = 10.5 * (i - 1);
}
// Select the Total column and apply formula
var totalColumn = workSheet.GetColumn(2); // Column C
for (int i = 2; i <= 10; i++)
{
workSheet[$"C{i}"].Formula = $"=A{i}*B{i}";
}
workBook.SaveAs("calculations.xlsx");
Imports IronXL
Imports System
' Create a new workbook
Dim workBook As WorkBook = WorkBook.Create()
Dim workSheet As WorkSheet = workBook.CreateWorkSheet("Data")
' Add header row
workSheet("A1").Value = "Quantity"
workSheet("B1").Value = "Price"
workSheet("C1").Value = "Total"
' Add sample data
For i As Integer = 2 To 10
workSheet($"A{i}").Value = i - 1
workSheet($"B{i}").Value = 10.5 * (i - 1)
Next
' Select the Total column and apply formula
Dim totalColumn = workSheet.GetColumn(2) ' Column C
For i As Integer = 2 To 10
workSheet($"C{i}").Formula = $"=A{i}*B{i}"
Next
workBook.SaveAs("calculations.xlsx")
如何合併多個範圍?
IronXL 提供靈活性,可透過 + 運算子組合多個 IronXl.Ranges.Range 物件。 透過使用 + 運算子,您可以輕鬆地將範圍串接或合併,以建立新的範圍。 當您需要對非連續儲存格進行運算時,此功能特別實用。 有關進階合併技巧,請參閱 Excel 範圍合併範例。
+ 運算子合併行與列。range 將被修改為包含合併後的範圍。)}]:path=/static-assets/excel/content-code-examples/how-to/select-range-combine-range.cs
using IronXL;
using System.Linq;
WorkBook workBook = WorkBook.Load("sample.xls");
WorkSheet workSheet = workBook.WorkSheets.First();
// Get range from worksheet
var range = workSheet["A2:B2"];
// Combine two ranges
var combinedRange = range + workSheet["A5:B5"];
Imports IronXL
Imports System.Linq
Private workBook As WorkBook = WorkBook.Load("sample.xls")
Private workSheet As WorkSheet = workBook.WorkSheets.First()
' Get range from worksheet
Private range = workSheet("A2:B2")
' Combine two ranges
Private combinedRange = range + workSheet("A5:B5")
進階範圍選取技巧
IronXL 支援與 Excel 功能相仿的進階範圍選取情境:
using IronXL;
using System;
using System.Linq;
WorkBook workBook = WorkBook.Load("data.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Select multiple non-adjacent ranges
var headerRange = workSheet["A1:E1"];
var dataRange1 = workSheet["A5:E10"];
var dataRange2 = workSheet["A15:E20"];
// Combine ranges for batch operations
var combinedData = dataRange1 + dataRange2;
// Apply consistent formatting across combined ranges
combinedData.Style.BottomBorder.Type = IronXl.Styles.BorderType.Thin;
combinedData.Style.Font.Height = 11;
// Copy formatting from one range to another
var sourceFormat = headerRange.Style;
dataRange1.First().Style = sourceFormat;
using IronXL;
using System;
using System.Linq;
WorkBook workBook = WorkBook.Load("data.xlsx");
WorkSheet workSheet = workBook.WorkSheets.First();
// Select multiple non-adjacent ranges
var headerRange = workSheet["A1:E1"];
var dataRange1 = workSheet["A5:E10"];
var dataRange2 = workSheet["A15:E20"];
// Combine ranges for batch operations
var combinedData = dataRange1 + dataRange2;
// Apply consistent formatting across combined ranges
combinedData.Style.BottomBorder.Type = IronXl.Styles.BorderType.Thin;
combinedData.Style.Font.Height = 11;
// Copy formatting from one range to another
var sourceFormat = headerRange.Style;
dataRange1.First().Style = sourceFormat;
Imports IronXL
Imports System
Imports System.Linq
Dim workBook As WorkBook = WorkBook.Load("data.xlsx")
Dim workSheet As WorkSheet = workBook.WorkSheets.First()
' Select multiple non-adjacent ranges
Dim headerRange = workSheet("A1:E1")
Dim dataRange1 = workSheet("A5:E10")
Dim dataRange2 = workSheet("A15:E20")
' Combine ranges for batch operations
Dim combinedData = dataRange1 + dataRange2
' Apply consistent formatting across combined ranges
combinedData.Style.BottomBorder.Type = IronXl.Styles.BorderType.Thin
combinedData.Style.Font.Height = 11
' Copy formatting from one range to another
Dim sourceFormat = headerRange.Style
dataRange1.First().Style = sourceFormat
在處理公式時,範圍選取功能將變得更加強大:
// Select a range for formula application
var calculationRange = workSheet["D2:D20"];
// Apply formulas that reference other ranges
for (int i = 2; i <= 20; i++)
{
workSheet[$"D{i}"].Formula = $"=SUM(A{i}:C{i})";
}
// Use range in aggregate functions
var sumRange = workSheet["B2:B20"];
decimal totalSum = sumRange.Sum();
decimal average = sumRange.Avg();
decimal max = sumRange.Max();
// Select a range for formula application
var calculationRange = workSheet["D2:D20"];
// Apply formulas that reference other ranges
for (int i = 2; i <= 20; i++)
{
workSheet[$"D{i}"].Formula = $"=SUM(A{i}:C{i})";
}
// Use range in aggregate functions
var sumRange = workSheet["B2:B20"];
decimal totalSum = sumRange.Sum();
decimal average = sumRange.Avg();
decimal max = sumRange.Max();
Imports System
' Select a range for formula application
Dim calculationRange = workSheet("D2:D20")
' Apply formulas that reference other ranges
For i As Integer = 2 To 20
workSheet($"D{i}").Formula = $"=SUM(A{i}:C{i})"
Next
' Use range in aggregate functions
Dim sumRange = workSheet("B2:B20")
Dim totalSum As Decimal = sumRange.Sum()
Dim average As Decimal = sumRange.Avg()
Dim max As Decimal = sumRange.Max()
範圍選取的最佳實務
在 IronXL 中處理範圍時,請參考以下效能與可靠性建議:
-
若已知確切所需的儲存格範圍,請使用具體的範圍地址。 這比選取整行或整列更為高效。
- 在選取前驗證範圍邊界,以避免執行時錯誤:
// Check if range exists before selection
int lastRow = workSheet.RowCount;
int lastColumn = workSheet.ColumnCount;
if (lastRow >= 10 && lastColumn >= 3)
{
var safeRange = workSheet["A1:C10"];
// Process range
}
// Check if range exists before selection
int lastRow = workSheet.RowCount;
int lastColumn = workSheet.ColumnCount;
if (lastRow >= 10 && lastColumn >= 3)
{
var safeRange = workSheet["A1:C10"];
// Process range
}
' Check if range exists before selection
Dim lastRow As Integer = workSheet.RowCount
Dim lastColumn As Integer = workSheet.ColumnCount
If lastRow >= 10 AndAlso lastColumn >= 3 Then
Dim safeRange = workSheet("A1:C10")
' Process range
End If
- 運用範圍迭代以實現高效處理:
var dataRange = workSheet["A1:E100"];
// Efficient: Process in batches
foreach (var cell in dataRange)
{
if (cell.IsNumeric)
{
cell.Value = (decimal)cell.Value * 1.1; // 10% increase
}
}
var dataRange = workSheet["A1:E100"];
// Efficient: Process in batches
foreach (var cell in dataRange)
{
if (cell.IsNumeric)
{
cell.Value = (decimal)cell.Value * 1.1; // 10% increase
}
}
Dim dataRange = workSheet("A1:E100")
' Efficient: Process in batches
For Each cell In dataRange
If cell.IsNumeric Then
cell.Value = CType(cell.Value, Decimal) * 1.1D ' 10% increase
End If
Next
針對複製儲存格範圍等較複雜的情境,IronXL 提供了能保留格式與公式的專用方法。
IronXL 入門指南
若要在您的專案中開始使用 IronXL 的範圍選取功能,請先參閱詳盡的入門指南。 透過 NuGet 套件管理員安裝 IronXL:
Install-Package IronXl.Excel
或使用 .NET CLI:
dotnet add package IronXl.Excel
dotnet add package IronXl.Excel
範圍選取是 C# 中操作 Excel 的基礎。 透過 IronXL 直觀的 API,您可高效地選取、處理及轉換 Excel 資料,無需面對 Office Interop 的複雜性。無論是建立報表、分析資料,還是自動化試算表任務,掌握範圍選取功能將顯著提升您的工作效率。
常見問題
如何使用 C# 在 Excel 中選取一組儲存格?
透過 IronXL,您可以使用簡單的語法(例如 workSheet["A1:C3"] 或 workSheet.GetRange("A1:C3")選取一組儲存格。這讓您能夠選取矩形範圍,無需依賴 Office Interop。
我能否透過程式碼選取整行與整列?
是的,IronXL 提供了 GetRow() 和 GetColumn() 方法,用於選取 Excel 試算表中的整行與整列。這些方法可讓您透過程式化方式控制行與列的選取,且無需安裝 Excel。
如何在 C# 中合併多個儲存格範圍?
IronXL 允許您使用 '+' 運算子組合多個範圍。此功能讓您能輕鬆地透過程式化方式處理非連續的儲存格選取範圍。
我可以在選取的範圍上執行哪些操作?
using IronXL 選取範圍後,您可以執行各種操作,包括排序、數學運算、套用格式、遍歷儲存格,以及彙總資料(例如計算總和)。
如何對選取的範圍套用格式?
在 IronXL 中選取範圍後,您可以透過 Style 屬性套用格式。例如,您可以使用 range.Style.BackgroundColor 設定背景顏色,並透過 range.Style.Font.Bold = true 將文字設為粗體。
我可以遍歷選取範圍內的儲存格嗎?
是的,IronXL 允許您使用 foreach 迴圈遍歷選取範圍內的儲存格。每個儲存格皆可存取其值與位址,使您能輕鬆地逐個儲存格處理資料。

