C#中的CSV文件读取教程

// Load a CSV file and interpret it as an Excel-like workbook
WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");

// Access the default worksheet in the workbook
WorkSheet ws = workbook.DefaultWorkSheet;

// Save the workbook to a new Excel file
workbook.SaveAs("Csv_To_Excel.xlsx");

' Load a CSV file and interpret it as an Excel-like workbook
Dim workbook As WorkBook = WorkBook.LoadCSV("Weather.csv", fileFormat:= ExcelFileFormat.XLSX, ListDelimiter:= ",")

' Access the default worksheet in the workbook
Dim ws As WorkSheet = workbook.DefaultWorkSheet

' Save the workbook to a new Excel file
workbook.SaveAs("Csv_To_Excel.xlsx")

// Load the Excel file
WorkBook wb = WorkBook.Load("sample.xlsx"); // Excel file path

' Load the Excel file
Dim wb As WorkBook = WorkBook.Load("sample.xlsx") ' Excel file path

// Access a specific worksheet by name
WorkSheet ws = wb.GetWorkSheet("Sheet1"); // by sheet name

' Access a specific worksheet by name
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1") ' by sheet name

using IronXL;

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Iterate through a range of cells and display their values
        foreach (var cell in ws["A2:A10"])
        {
            Console.WriteLine("Value is: {0}", cell.Text);
        }
        Console.ReadKey();
    }
}

Imports IronXL

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Iterate through a range of cells and display their values
		For Each cell In ws("A2:A10")
			Console.WriteLine("Value is: {0}", cell.Text)
		Next cell
		Console.ReadKey()
	End Sub
End Class

DataTable dt = ws.ToDataTable(true); // Converts the worksheet to a DataTable, using the first row as column names

Dim dt As DataTable = ws.ToDataTable(True) ' Converts the worksheet to a DataTable, using the first row as column names

using IronXL;
using System.Data;

Imports IronXL
Imports System.Data

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("Weather.xlsx"); // Your Excel file Name
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Parse worksheet into datatable
        DataTable dt = ws.ToDataTable(true); // Parse Sheet1 of sample.xlsx file into DataTable

        // Iterate through rows and columns to display their values
        foreach (DataRow row in dt.Rows) // Access rows
        {
            for (int i = 0; i < dt.Columns.Count; i++) // Access columns of corresponding row
            {
                Console.Write(row[i] + "  ");
            }
            Console.WriteLine();
        }
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("Weather.xlsx") ' Your Excel file Name
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Parse worksheet into datatable
		Dim dt As DataTable = ws.ToDataTable(True) ' Parse Sheet1 of sample.xlsx file into DataTable

		' Iterate through rows and columns to display their values
		For Each row As DataRow In dt.Rows ' Access rows
			For i As Integer = 0 To dt.Columns.Count - 1 ' Access columns of corresponding row
				Console.Write(row(i) & "  ")
			Next i
			Console.WriteLine()
		Next row
	End Sub
End Class

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and convert it to a DataSet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        DataSet ds = wb.ToDataSet(); // Parse WorkBook wb into DataSet

        // Iterate through tables to display their names
        foreach (DataTable dt in ds.Tables)
        {
            Console.WriteLine(dt.TableName);
        }
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and convert it to a DataSet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ds As DataSet = wb.ToDataSet() ' Parse WorkBook wb into DataSet

		' Iterate through tables to display their names
		For Each dt As DataTable In ds.Tables
			Console.WriteLine(dt.TableName)
		Next dt
	End Sub
End Class

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and convert it to a DataSet
        WorkBook wb = WorkBook.Load("Weather.xlsx");
        DataSet ds = wb.ToDataSet(); // Treat the complete Excel file as DataSet

        // Iterate through each table and its rows and columns
        foreach (DataTable dt in ds.Tables) // Treat Excel WorkSheet as DataTable
        {
            foreach (DataRow row in dt.Rows) // Corresponding Sheet's Rows
            {
                for (int i = 0; i < dt.Columns.Count; i++) // Sheet columns of corresponding row
                {
                    Console.Write(row[i] + "  ");
                }
                Console.WriteLine();
            }
        }
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and convert it to a DataSet
		Dim wb As WorkBook = WorkBook.Load("Weather.xlsx")
		Dim ds As DataSet = wb.ToDataSet() ' Treat the complete Excel file as DataSet

		' Iterate through each table and its rows and columns
		For Each dt As DataTable In ds.Tables ' Treat Excel WorkSheet as DataTable
			For Each row As DataRow In dt.Rows ' Corresponding Sheet's Rows
				For i As Integer = 0 To dt.Columns.Count - 1 ' Sheet columns of corresponding row
					Console.Write(row(i) & "  ")
				Next i
				Console.WriteLine()
			Next row
		Next dt
	End Sub
End Class

// Load a CSV file, specify the file format and delimiter
WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");

// Access the default worksheet from the workbook
WorkSheet ws = workbook.DefaultWorkSheet;

// Convert worksheet to DataTable    
DataTable dt = ws.ToDataTable(true); // Parse Sheet1 of sample.xlsx file into DataTable

// Iterate through rows and columns to display their values
foreach (DataRow row in dt.Rows) // Access rows
{
    for (int i = 0; i < dt.Columns.Count; i++) // Access columns of corresponding row
    {
        Console.Write(row[i] + "  ");
    }
    Console.WriteLine();
}

' Load a CSV file, specify the file format and delimiter
Dim workbook As WorkBook = WorkBook.LoadCSV("Weather.csv", fileFormat:= ExcelFileFormat.XLSX, ListDelimiter:= ",")

' Access the default worksheet from the workbook
Dim ws As WorkSheet = workbook.DefaultWorkSheet

' Convert worksheet to DataTable    
Dim dt As DataTable = ws.ToDataTable(True) ' Parse Sheet1 of sample.xlsx file into DataTable

' Iterate through rows and columns to display their values
For Each row As DataRow In dt.Rows ' Access rows
	For i As Integer = 0 To dt.Columns.Count - 1 ' Access columns of corresponding row
		Console.Write(row(i) & "  ")
	Next i
	Console.WriteLine()
Next row

// Access the data by cell addressing
string val = ws["Cell Address"].ToString();

' Access the data by cell addressing
Dim val As String = ws("Cell Address").ToString()

using IronXL;

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Parse Excel cell value into string
        string str_val = ws["B3"].Value.ToString();

        // Parse Excel cell value into Int32
        Int32 int32_val = ws["G3"].Int32Value;

        // Parse Excel cell value into Decimal
        decimal decimal_val = ws["E5"].DecimalValue;

        // Output parsed values to the console
        Console.WriteLine("Parse B3 Cell Value into String: {0}", str_val);
        Console.WriteLine("Parse G3 Cell Value into Int32: {0}", int32_val);
        Console.WriteLine("Parse E5 Cell Value into decimal: {0}", decimal_val);

        Console.ReadKey();
    }
}

Imports IronXL

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Parse Excel cell value into string
		Dim str_val As String = ws("B3").Value.ToString()

		' Parse Excel cell value into Int32
		Dim int32_val As Int32 = ws("G3").Int32Value

		' Parse Excel cell value into Decimal
		Dim decimal_val As Decimal = ws("E5").DecimalValue

		' Output parsed values to the console
		Console.WriteLine("Parse B3 Cell Value into String: {0}", str_val)
		Console.WriteLine("Parse G3 Cell Value into Int32: {0}", int32_val)
		Console.WriteLine("Parse E5 Cell Value into decimal: {0}", decimal_val)

		Console.ReadKey()
	End Sub
End Class

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Parse Excel cell value into string
        string str_val = ws["B3"].Value.ToString();

        // Parse Excel cell value into Int32
        Int32 int32_val = ws["G3"].Int32Value;

        // Parse Excel cell value into Decimal
        decimal decimal_val = ws["E5"].DecimalValue;

        // Output parsed values to the console
        Console.WriteLine("Parse B3 Cell Value into String: {0}", str_val);
        Console.WriteLine("Parse G3 Cell Value into Int32: {0}", int32_val);
        Console.WriteLine("Parse E5 Cell Value into decimal: {0}", decimal_val);

        Console.ReadKey();
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Parse Excel cell value into string
		Dim str_val As String = ws("B3").Value.ToString()

		' Parse Excel cell value into Int32
		Dim int32_val As Int32 = ws("G3").Int32Value

		' Parse Excel cell value into Decimal
		Dim decimal_val As Decimal = ws("E5").DecimalValue

		' Output parsed values to the console
		Console.WriteLine("Parse B3 Cell Value into String: {0}", str_val)
		Console.WriteLine("Parse G3 Cell Value into Int32: {0}", int32_val)
		Console.WriteLine("Parse E5 Cell Value into decimal: {0}", decimal_val)

		Console.ReadKey()
	End Sub
End Class

// Access a cell value as a boolean
bool Val = ws["Cell Address"].BoolValue;

' Access a cell value as a boolean
Dim Val As Boolean = ws("Cell Address").BoolValue

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Convert a range into an array
        var array = ws["B6:F6"].ToArray();

        // Get the count of items in the array
        int item = array.Count();

        // Get the first item as a string
        string total_items = array[0].Value.ToString();

        // Output information about the array to the console
        Console.WriteLine("First item in the array: {0}", item);
        Console.WriteLine("Total items from B6 to F6: {0}", total_items);

        Console.ReadKey();
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Convert a range into an array
		Dim array = ws("B6:F6").ToArray()

		' Get the count of items in the array
		Dim item As Integer = array.Count()

		' Get the first item as a string
		Dim total_items As String = array(0).Value.ToString()

		' Output information about the array to the console
		Console.WriteLine("First item in the array: {0}", item)
		Console.WriteLine("Total items from B6 to F6: {0}", total_items)

		Console.ReadKey()
	End Sub
End Class

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("sample.xlsx");
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Traverse a range and output boolean values
        foreach (var item in ws["G1:G10"])
        {
            Console.WriteLine("Condition is: {0}", item.BoolValue);
        }
        Console.ReadKey();
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Traverse a range and output boolean values
		For Each item In ws("G1:G10")
			Console.WriteLine("Condition is: {0}", item.BoolValue)
		Next item
		Console.ReadKey()
	End Sub
End Class

class Program
{
    static void Main(string[] args)
    {
        // Load the workbook and access a specific worksheet
        WorkBook wb = WorkBook.Load("Weather.xlsx"); // Your Excel File Name
        WorkSheet ws = wb.GetWorkSheet("Sheet1");

        // Traverse all rows of Excel WorkSheet
        for (int i = 0; i < ws.Rows.Count(); i++)
        {
            // Traverse all columns of specific Row
            for (int j = 0; j < ws.Columns.Count(); j++)
            {
                // Get the values
                string val = ws.Rows[i].Columns[j].Value.ToString();
                Console.WriteLine("Value of Row {0} and Column {1} is: {2}", i, j, val);
            }
        }
        Console.ReadKey();
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load the workbook and access a specific worksheet
		Dim wb As WorkBook = WorkBook.Load("Weather.xlsx") ' Your Excel File Name
		Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

		' Traverse all rows of Excel WorkSheet
		For i As Integer = 0 To ws.Rows.Count() - 1
			' Traverse all columns of specific Row
			For j As Integer = 0 To ws.Columns.Count() - 1
				' Get the values
				Dim val As String = ws.Rows(i).Columns(j).Value.ToString()
				Console.WriteLine("Value of Row {0} and Column {1} is: {2}", i, j, val)
			Next j
		Next i
		Console.ReadKey()
	End Sub
End Class

using IronXL;
using System;
using System.Linq;

Imports IronXL
Imports System
Imports System.Linq

class Program
{
    static void Main(string[] args)
    {
        // Load an Excel file and access the first worksheet
        WorkBook workbook = WorkBook.Load("Weather.xlsx");
        WorkSheet sheet = workbook.WorkSheets.First();

        // Select cells easily in Excel notation and return the calculated value
        int cellValue = sheet["A2"].IntValue;

        // Read from ranges of cells elegantly
        foreach (var cell in sheet["A2:A10"])
        {
            Console.WriteLine("Cell {0} has value '{1}'", cell.AddressString, cell.Text);
        }
    }
}

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Load an Excel file and access the first worksheet
		Dim workbook As WorkBook = WorkBook.Load("Weather.xlsx")
		Dim sheet As WorkSheet = workbook.WorkSheets.First()

		' Select cells easily in Excel notation and return the calculated value
		Dim cellValue As Integer = sheet("A2").IntValue

		' Read from ranges of cells elegantly
		For Each cell In sheet("A2:A10")
			Console.WriteLine("Cell {0} has value '{1}'", cell.AddressString, cell.Text)
		Next cell
	End Sub
End Class