using IronXL; using System; using System.Linq; // Supported for XLSX, XLS, XLSM, XLTX, CSV and TSV WorkBook workBook = WorkBook.Load("sample.xlsx"); // Select worksheet at index 0 WorkSheet workSheet = workBook.WorkSheets[0]; // Get any existing worksheet WorkSheet firstSheet = workBook.DefaultWorkSheet; // Select a cell and return the converted value int cellValue = workSheet["A2"].IntValue; // Read from ranges of cells elegantly. foreach (var cell in workSheet["A2:A10"]) { Console.WriteLine("Cell {0} has value '{1}'", cell.AddressString, cell.Text); } // Calculate aggregate values such as Min, Max and Sum decimal sum = workSheet["A2:A10"].Sum(); // Linq compatible decimal max = workSheet["A2:A10"].Max(c => c.DecimalValue);

using IronSoftware.Drawing; using IronXL; using IronXL.Styles; using System.Linq; WorkBook workBook = WorkBook.Load("sample.xls"); WorkSheet workSheet = workBook.WorkSheets.First(); var range = workSheet["A1:H10"]; var cell = range.First(); // Set background color of the cell with an rgb string cell.Style.SetBackgroundColor("#428D65"); // Apply styling to the whole range. // Set underline property to the font // FontUnderlineType is enum that stands for different types of font underlying range.Style.Font.Underline = FontUnderlineType.SingleAccounting; // Define whether to use horizontal line through the text or not range.Style.Font.Strikeout = false; // Define whether the font is bold or not range.Style.Font.Bold = true; // Define whether the font is italic or not range.Style.Font.Italic = false; // Get or set script property of a font // Font script enum stands for available options range.Style.Font.FontScript = FontScript.Super; // Set the type of the border line // There are also TopBorder,LeftBorder,RightBorder,DiagonalBorder properties // BorderType enum indicates the line style of a border in a cell range.Style.BottomBorder.Type = BorderType.MediumDashed; // Indicate whether the cell should be auto-sized range.Style.ShrinkToFit = true; // Set alignment of the cell range.Style.VerticalAlignment = VerticalAlignment.Bottom; // Set border color range.Style.DiagonalBorder.SetColor("#20C96F"); // Define border type and border direction as well range.Style.DiagonalBorder.Type = BorderType.Thick; // DiagonalBorderDirection enum stands for direction of diagonal border inside cell range.Style.DiagonalBorderDirection = DiagonalBorderDirection.Forward; // Set background color of cells range.Style.SetBackgroundColor(Color.Aquamarine); // Set fill pattern of the cell // FillPattern enum indicates the style of fill pattern range.Style.FillPattern = FillPattern.Diamonds; // Set the number of spaces to intend the text range.Style.Indention = 5; // Indicate if the text is wrapped range.Style.WrapText = true; workBook.SaveAs("stylingOptions.xls");

使用IRONXL

在 .NET Core 中处理 Excel

更新 2023年十二月19日

.NET Core Excel 概览

在当今时代，我们需要一种更好的方法在 .NET Core 应用程序中处理 Excel 电子表格。在下面的教程中，我们将学习如何使用 C# 访问 .NET Core Excel 项目中的电子表格并修改其值。

步骤 1

1.下载 IronXL 库

要在 .NET Core 中轻松处理 Excel 文件，请试试 IronXL。下载 IronXL DLL 或使用 NuGet 安装供开发项目免费使用。

Install-Package IronXL.Excel

教程

2. .NET Core Excel 编辑项目

既然已经下载了 IronXL，那就让我们开始吧。在项目中加载 Excel 文件并访问工作表需要编辑和更改数据的地方。

3.编辑特定单元格值

要编辑 Excel 文件，请在项目中添加 "IronXL "引用，并通过 "使用 IronXL "导入库。

3.1.加载样本文件

在下面的例子中，我们的 Excel 文件名是 sample.xlsx，它存在于项目的 bin> Debug> netcoreapp3.1 文件夹中。我们将使用此代码编辑 sample.xlsx 中 A1 单元格中的 new value 值。

/**
Load WorkSheet
anchor-load-a-sample-file
**/
using IronXL;
static void Main(string [] args)
{          
    WorkBook wb = WorkBook.Load("sample.xlsx"); //load Excel file 
    WorkSheet ws = wb.GetWorkSheet("Sheet1"); //Get sheet1 of sample.xlsx
    ws ["A1"].Value = "new value"; //access A1 cell and edit the value
    wb.SaveAs("sample.xlsx");   //save changes        
}

/**
Load WorkSheet
anchor-load-a-sample-file
**/
using IronXL;
static void Main(string [] args)
{          
    WorkBook wb = WorkBook.Load("sample.xlsx"); //load Excel file 
    WorkSheet ws = wb.GetWorkSheet("Sheet1"); //Get sheet1 of sample.xlsx
    ws ["A1"].Value = "new value"; //access A1 cell and edit the value
    wb.SaveAs("sample.xlsx");   //save changes        
}

'''
'''Load WorkSheet
'''anchor-load-a-sample-file
'''*
Imports IronXL
Shared Sub Main(ByVal args() As String)
	Dim wb As WorkBook = WorkBook.Load("sample.xlsx") 'load Excel file
	Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1") 'Get sheet1 of sample.xlsx
	ws ("A1").Value = "new value" 'access A1 cell and edit the value
	wb.SaveAs("sample.xlsx") 'save changes
End Sub

VB C#

4.为多个单元格赋值

通过使用 (冒号).其左侧表示起始单元格，右侧表示特定列的最后一个单元格。

表格 [发件人：收件人]`

这将编辑 A 列A1至A9单元格中的新值。

/**
Assign Value Multi Cells
anchor-assign-value-to-multiple-cells
**/
using IronXL;
static void Main(string [] args)
{
    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    ws ["A1:A9"].Value = "new value";
    wb.SaveAs("sample.xlsx");
}

/**
Assign Value Multi Cells
anchor-assign-value-to-multiple-cells
**/
using IronXL;
static void Main(string [] args)
{
    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    ws ["A1:A9"].Value = "new value";
    wb.SaveAs("sample.xlsx");
}

'''
'''Assign Value Multi Cells
'''anchor-assign-value-to-multiple-cells
'''*
Imports IronXL
Shared Sub Main(ByVal args() As String)
	Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
	Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
	ws ("A1:A9").Value = "new value"
	wb.SaveAs("sample.xlsx")
End Sub

VB C#

5.编辑用户输入的单元格

下面是另一种情况，我们可以从用户那里获取值并编辑 Excel 文件。

/**
Edit Cells User Input
anchor-edit-cells-with-user-inputs
**/
using IronXL;
static void Main(string [] args)
{
    string _from, _to, newValue ;

    Console.Write("Enter Starting Cell :");
    _from = Console.ReadLine();

    Console.Write("Enter Last Cell :");
    _to = Console.ReadLine();

    Console.Write("Enter value:");
    newValue = Console.ReadLine();

    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    ws [_from + ":" + _to].Value = newValue;
    wb.SaveAs("sample.xlsx"); 
    Console.WriteLine("Successfully Changed...!");
    Console.ReadKey();
}

/**
Edit Cells User Input
anchor-edit-cells-with-user-inputs
**/
using IronXL;
static void Main(string [] args)
{
    string _from, _to, newValue ;

    Console.Write("Enter Starting Cell :");
    _from = Console.ReadLine();

    Console.Write("Enter Last Cell :");
    _to = Console.ReadLine();

    Console.Write("Enter value:");
    newValue = Console.ReadLine();

    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    ws [_from + ":" + _to].Value = newValue;
    wb.SaveAs("sample.xlsx"); 
    Console.WriteLine("Successfully Changed...!");
    Console.ReadKey();
}

'''
'''Edit Cells User Input
'''anchor-edit-cells-with-user-inputs
'''*
Imports IronXL
Shared Sub Main(ByVal args() As String)
	Dim _from, _to, newValue As String

	Console.Write("Enter Starting Cell :")
	_from = Console.ReadLine()

	Console.Write("Enter Last Cell :")
	_to = Console.ReadLine()

	Console.Write("Enter value:")
	newValue = Console.ReadLine()

	Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
	Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
	ws (_from & ":" & _to).Value = newValue
	wb.SaveAs("sample.xlsx")
	Console.WriteLine("Successfully Changed...!")
	Console.ReadKey()
End Sub

VB C#

上述代码将显示以下输出并接受用户输入：

在 .NET Core 中使用 Excel，图 1：带有用户输入的控制台应用程序用户界面

带有用户输入的控制台应用程序用户界面

在 ExcelSheet 中，我们可以看到数值从 B4 变为 B9：

在 .NET Core 中使用 Excel，图 2：新值从 B4 填至 B9

新值从 B4 填至 B9

6.用静态值编辑多个单元格

编辑多个单元格并分配动态值非常简单。让我们看看下面的示例：

/**
Edit Multi Cells Static Value
anchor-edit-multiple-cells-with-static-value
**/
using IronXL;
static void Main(string [] args)
{
    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    for (int i = From; i <= To; i++) //Set cell range of column A to be edit.
    {
        ws ["A" + i].Value = "Value"+i;
    }
    wb.SaveAs("sample.xlsx");  
}

/**
Edit Multi Cells Static Value
anchor-edit-multiple-cells-with-static-value
**/
using IronXL;
static void Main(string [] args)
{
    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");
    for (int i = From; i <= To; i++) //Set cell range of column A to be edit.
    {
        ws ["A" + i].Value = "Value"+i;
    }
    wb.SaveAs("sample.xlsx");  
}

'''
'''Edit Multi Cells Static Value
'''anchor-edit-multiple-cells-with-static-value
'''*
Imports IronXL
Shared Sub Main(ByVal args() As String)
	Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
	Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
	For i As Integer = From To [To] 'Set cell range of column A to be edit.
		ws ("A" & i).Value = "Value" & i
	Next i
	wb.SaveAs("sample.xlsx")
End Sub

VB C#