.NET Excel 库（开发者教程）

using IronXL;

public class IronXLExample
{
    public static void Main(string[] args)
    {
        // Create a new workbook
        WorkBook workbook = WorkBook.Create();

        // Create a new worksheet named "Sheet1"
        WorkSheet worksheet = workbook.CreateWorkSheet("Sheet1");

        // Set the value of cell A1
        worksheet["A1"].Value = "test";

        // Save the workbook to a file
        workbook.SaveAs("sample1.xlsx");
    }
}

Imports IronXL

Public Class IronXLExample
	Public Shared Sub Main(ByVal args() As String)
		' Create a new workbook
		Dim workbook As WorkBook = WorkBook.Create()

		' Create a new worksheet named "Sheet1"
		Dim worksheet As WorkSheet = workbook.CreateWorkSheet("Sheet1")

		' Set the value of cell A1
		worksheet("A1").Value = "test"

		' Save the workbook to a file
		workbook.SaveAs("sample1.xlsx")
	End Sub
End Class

// Create a workbook with multiple sheets and formatting
WorkBook workbook = WorkBook.Create();
WorkSheet salesSheet = workbook.CreateWorkSheet("Sales");
WorkSheet revenueSheet = workbook.CreateWorkSheet("Revenue");

// Add headers with formatting
salesSheet["A1"].Value = "Product";
salesSheet["B1"].Value = "Quantity";
salesSheet["C1"].Value = "Revenue";

// Apply bold formatting to headers
salesSheet["A1:C1"].Style.Font.Bold = true;

// Add data with number formatting
salesSheet["A2"].Value = "Widget A";
salesSheet["B2"].Value = 150;
salesSheet["C2"].Value = 4500.00;
salesSheet["C2"].FormatString = "$#,##0.00"; // Currency format

// Auto-size columns for better readability
salesSheet.AutoSizeColumn(0);
salesSheet.AutoSizeColumn(1);
salesSheet.AutoSizeColumn(2);

workbook.SaveAs("sales_report.xlsx");

' Create a workbook with multiple sheets and formatting
Dim workbook As WorkBook = WorkBook.Create()
Dim salesSheet As WorkSheet = workbook.CreateWorkSheet("Sales")
Dim revenueSheet As WorkSheet = workbook.CreateWorkSheet("Revenue")

' Add headers with formatting
salesSheet("A1").Value = "Product"
salesSheet("B1").Value = "Quantity"
salesSheet("C1").Value = "Revenue"

' Apply bold formatting to headers
salesSheet("A1:C1").Style.Font.Bold = True

' Add data with number formatting
salesSheet("A2").Value = "Widget A"
salesSheet("B2").Value = 150
salesSheet("C2").Value = 4500.0
salesSheet("C2").FormatString = "$#,##0.00" ' Currency format

' Auto-size columns for better readability
salesSheet.AutoSizeColumn(0)
salesSheet.AutoSizeColumn(1)
salesSheet.AutoSizeColumn(2)

workbook.SaveAs("sales_report.xlsx")

using IronXL;

public class ExcelReadExportExample
{
    public static void Main(string[] args)
    {
        // Load an existing Excel file
        var workbook = WorkBook.LoadExcel("Demo file.xlsx");

        // Get a worksheet from the workbook
        WorkSheet workSheet = workbook.GetWorkSheet("Sheet1");

        // Read the value of cell A1
        string addressVal = workSheet["A1"].ToString();
        Console.WriteLine(addressVal);

        // Modify the value of cell A2
        workSheet["A2"].Value = "test";

        // Save the workbook in multiple formats
        workbook.SaveAs("export.xlsx");
        // Or save as XLS
        workbook.SaveAs("export.xls");
        // Or save the specific worksheet as an XLS file
        workbook.WorkSheets[0].SaveAs("export.xls");
    }
}

Imports IronXL

Public Class ExcelReadExportExample
	Public Shared Sub Main(ByVal args() As String)
		' Load an existing Excel file
		Dim workbook = WorkBook.LoadExcel("Demo file.xlsx")

		' Get a worksheet from the workbook
		Dim workSheet As WorkSheet = workbook.GetWorkSheet("Sheet1")

		' Read the value of cell A1
		Dim addressVal As String = workSheet("A1").ToString()
		Console.WriteLine(addressVal)

		' Modify the value of cell A2
		workSheet("A2").Value = "test"

		' Save the workbook in multiple formats
		workbook.SaveAs("export.xlsx")
		' Or save as XLS
		workbook.SaveAs("export.xls")
		' Or save the specific worksheet as an XLS file
		workbook.WorkSheets(0).SaveAs("export.xls")
	End Sub
End Class

// Load workbook from various sources
WorkBook workbook = WorkBook.Load("data.xlsx");

// Access worksheets in multiple ways
WorkSheet sheet1 = workbook.WorkSheets[0]; // By index
WorkSheet sheet2 = workbook.GetWorkSheet("Sheet2"); // By name

// Read data from ranges
var range = sheet1["A1:C10"];
foreach (var cell in range)
{
    Console.WriteLine($"{cell.Address}: {cell.Value}");
}

// Convert to DataTable for easier processing
DataTable dataTable = sheet1.ToDataTable(true);

// Export to various formats
workbook.SaveAs("output.csv"); // CSV format
workbook.SaveAsJson("output.json"); // JSON format
workbook.SaveAsXml("output.xml"); // XML format

' Load workbook from various sources
Dim workbook As WorkBook = WorkBook.Load("data.xlsx")

' Access worksheets in multiple ways
Dim sheet1 As WorkSheet = workbook.WorkSheets(0) ' By index
Dim sheet2 As WorkSheet = workbook.GetWorkSheet("Sheet2") ' By name

' Read data from ranges
Dim range = sheet1("A1:C10")
For Each cell In range
    Console.WriteLine($"{cell.Address}: {cell.Value}")
Next

' Convert to DataTable for easier processing
Dim dataTable As DataTable = sheet1.ToDataTable(True)

' Export to various formats
workbook.SaveAs("output.csv") ' CSV format
workbook.SaveAsJson("output.json") ' JSON format
workbook.SaveAsXml("output.xml") ' XML format