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在 C# 中讀取 CSV 文件：教程
已更新 2024年1月6日
處理各種 Excel 格式通常需要讀取數據，然後以編程方式重新配置。在本文中，我們將學習如何使用 IronXL，在 C# 中讀取 CSV 文件並解析 Excel 試算表中的數據，這是這項工作的完美工具。
什麼是 CSV？
CSV 是一種簡單的數據格式，但由於它使用了幾種分隔符來區分數據的行和列，因此在我們的 C# 項目中以編程方式讀取它可能會有很多差異且較為困難。本文將向您展示如何使用 IronXL 函式庫 讀取 CSV 文件。
1. 如何在 C# 中读取 CSV 文件
在您能够使用 IronXL 在 MVC、ASP.NET 或 .NET Core 中读取 CSV 文件之前，您需要安装它。下面是一个快速的安装指南。
- 在 Visual Studio 中，选择“项目”菜单
- 管理 NuGet 包
- 搜索 IronXL.Excel
- 安装
在 Visual Studio 的 NuGet 套件管理器中搜尋 IronXL
當你需要在 C# 中讀取 CSV 檔案時，IronXL 是完美的工具。你可以使用逗號或其他任何分隔符號讀取 CSV 檔案，如以下程式碼段所示。
WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");
WorkSheet ws = workbook.DefaultWorkSheet;
workbook.SaveAs("Csv_To_Excel.xlsx");WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");
WorkSheet ws = workbook.DefaultWorkSheet;
workbook.SaveAs("Csv_To_Excel.xlsx");Dim workbook As WorkBook = WorkBook.LoadCSV("Weather.csv", fileFormat:= ExcelFileFormat.XLSX, ListDelimiter:= ",")
Dim ws As WorkSheet = workbook.DefaultWorkSheet
workbook.SaveAs("Csv_To_Excel.xlsx")VB C#
輸出：
使用逗號分隔符輸出CSV文件
代碼說明：
A Workbook 物件已創建。 LoadCSV 然後使用 WorkBook 物件的 method 指定 CSV 的名稱及其格式，即 CSV 文件中使用的分隔符。在這種情況下，逗號用作分隔符。 工作表 然後創建一個對象。這裡會放置 CSV 文件的內容。然後以新的名稱和格式保存該文件。
在 Microsoft Excel 中顯示的數據
2. IronXL 用於 Excel 文件
使用 IronXL 作為專案中處理 Excel 檔案格式的簡化方式。您可以 通過直接下載安裝 IronXL。或者，您可以使用 Visual Studio 的 NuGet 安裝該軟體的開發是免費的。
Install-Package IronXL.Excel
3. 加載 WorkBook 並訪問 WorkSheet
WorkBook 是 IronXL 的一個類，其對象提供了對 Excel 文件及其所有功能的完全訪問。舉例來說，如果我們要訪問一個 Excel 文件，我們會使用以下代碼：
WorkBook wb = WorkBook.Load("sample.xlsx");//Excel file pathWorkBook wb = WorkBook.Load("sample.xlsx");//Excel file pathDim wb As WorkBook = WorkBook.Load("sample.xlsx") 'Excel file pathVB C#
要存取 Excel 檔案中特定的工作表，IronXL 提供了 WorkSheet 類別。
WorkSheet ws = wb.GetWorkSheet("Sheet1"); //by sheet nameWorkSheet ws = wb.GetWorkSheet("Sheet1"); //by sheet nameDim ws As WorkSheet = wb.GetWorkSheet("Sheet1") 'by sheet nameVB C#
獲取 Excel 工作表 ws 後，您可以從中提取任何類型的數據，並在其上執行所有 Excel 功能。可以通過此過程從 Excel 工作表 ws 獲取數據：
using IronXL;
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
foreach (var cell in ws ["A2:A10"])
{
Console.WriteLine("value is: {0}", cell.Text);
}
Console.ReadKey();
}using IronXL;
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
foreach (var cell in ws ["A2:A10"])
{
Console.WriteLine("value is: {0}", cell.Text);
}
Console.ReadKey();
}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 Each cell In ws ("A2:A10")
Console.WriteLine("value is: {0}", cell.Text)
Next cell
Console.ReadKey()
End SubVB C#
4. 將 Excel 工作表讀取為 DataTable
使用 IronXL，以 DataTable 形式操作 Excel 工作表 非常簡單。
DataTable dt = WorkSheet.ToDataTable();DataTable dt = WorkSheet.ToDataTable();Dim dt As DataTable = WorkSheet.ToDataTable()VB C#
使用以下命名空間
using IronXL;
using System.Data;using IronXL;
using System.Data;Imports IronXL
Imports System.DataVB C#
撰寫以下代碼：
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("Weather.xlsx"); // Your Excel file Name
WorkSheet ws = wb.GetWorkSheet("Sheet1");
DataTable dt = ws.ToDataTable(true);//parse sheet1 of sample.xlsx file into datatable
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();
}
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("Weather.xlsx"); // Your Excel file Name
WorkSheet ws = wb.GetWorkSheet("Sheet1");
DataTable dt = ws.ToDataTable(true);//parse sheet1 of sample.xlsx file into datatable
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();
}
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("Weather.xlsx") ' Your Excel file Name
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
Dim dt As DataTable = ws.ToDataTable(True) 'parse sheet1 of sample.xlsx file into datatable
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 SubVB C#
DataTable 對象的控制台輸出
在這個例子中，我們將探討如何將 Excel 文件用作 DataSet。
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
DataSet ds = wb.ToDataSet(); //Parse WorkBook wb into DataSet
foreach (DataTable dt in ds.Tables)
{
Console.WriteLine(dt.TableName);
}
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
DataSet ds = wb.ToDataSet(); //Parse WorkBook wb into DataSet
foreach (DataTable dt in ds.Tables)
{
Console.WriteLine(dt.TableName);
}
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
Dim ds As DataSet = wb.ToDataSet() 'Parse WorkBook wb into DataSet
For Each dt As DataTable In ds.Tables
Console.WriteLine(dt.TableName)
Next dt
End SubVB C#
從 DataSet 對象訪問工作表名稱
讓我們來看另一個如何訪問所有 Excel 工作表中每個單元格值的示例。這裡，我們可以訪問 Excel 文件中每個工作表的每個單元格值。
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("Weather.xlsx");
DataSet ds = wb.ToDataSet();//behave complete Excel file as DataSet
foreach (DataTable dt in ds.Tables)//behave 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();
}
}
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("Weather.xlsx");
DataSet ds = wb.ToDataSet();//behave complete Excel file as DataSet
foreach (DataTable dt in ds.Tables)//behave 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();
}
}
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("Weather.xlsx")
Dim ds As DataSet = wb.ToDataSet() 'behave complete Excel file as DataSet
For Each dt As DataTable In ds.Tables 'behave 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 SubVB C#
Dataset 對象的控制台輸出
5. 在 C# .NET 中解析 CSV
CSV 文件在處理字段中的換行符或包含在引號中的字段方面存在大量問題，這些引號完全阻止了簡單的字符串分割方法。最近，我在用 C# .NET 轉換 CSV 時，通過指定可定制的分隔符而不是使用 string.Split 發現了以下選項。(',')` 用逗號分隔數值。
6. 在 C# 中讀取 CSV 資料
這個過程使讀取器前進到下一個檔案。我們在 trygetfield 中讀取 CSV 欄位檔。我們使用 read 函數將 CSV 文件的欄位讀取為記錄欄位。
WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");
WorkSheet ws = workbook.DefaultWorkSheet;
DataTable dt = ws.ToDataTable(true);//parse sheet1 of sample.xlsx file into datatable
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();
}WorkBook workbook = WorkBook.LoadCSV("Weather.csv", fileFormat: ExcelFileFormat.XLSX, ListDelimiter: ",");
WorkSheet ws = workbook.DefaultWorkSheet;
DataTable dt = ws.ToDataTable(true);//parse sheet1 of sample.xlsx file into datatable
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();
}Dim workbook As WorkBook = WorkBook.LoadCSV("Weather.csv", fileFormat:= ExcelFileFormat.XLSX, ListDelimiter:= ",")
Dim ws As WorkSheet = workbook.DefaultWorkSheet
Dim dt As DataTable = ws.ToDataTable(True) 'parse sheet1 of sample.xlsx file into datatable
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 rowVB C#
來自 DataTable 的控制台輸出
7. 從 Excel 文件中獲取數據
現在我們可以使用各種方法，輕鬆從打開的 Excel 工作表中獲取任何類型的數據。在以下示例中，我們可以看到如何訪問特定的單元格值並將其解析為 string：
//Access the Data by Cell Addressing
string val = ws ["Cell Address"].ToString();//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()VB C#
在上面的行中，ws 是在步驟 2 中定義的工作表。這是「簡單」的方法，但您可以閱讀更多內容並查看不同的示例，以了解如何 訪問 Excel 文件數據.
8. 如何在 C# 中解析 Excel 文件
當使用 Excel 試算表進行應用程式構建時，我們經常根據數據分析結果，需要將 C# 中的 Excel 文件數據解析成所需的格式以獲得正確的結果。在 C# 環境中使用 IronXL 可以輕鬆地將數據解析成不同的格式，請參見以下步驟。
using IronXL;
static void Main(string [] args)
{
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;
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();
}using IronXL;
static void Main(string [] args)
{
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;
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
Shared Sub Main(ByVal args() As String)
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
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 SubVB C#
9. 如何將 Excel 資料解析為數值和布林值
現在我們來看看如何解析 Excel 檔案資料。首先，我們將探討如何處理 Excel 數值資料，接著將其解析為我們所需的格式。
每種數據類型的摘要表
static void Main(string [] args)
{
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;
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();
}static void Main(string [] args)
{
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;
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();
}Shared Sub Main(ByVal args() As String)
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
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 SubVB C#
此代碼將顯示以下輸出：
正確數據類型的控制台輸出
我們可以在這裡看到樣本 Excel 檔案 sample.xlsx 的值：
在 Excel 中顯示正確的數據類型
為了將 Excel 文件數據解析為布爾數據類型，IronXL 提供了 布林值 函數。可以如下使用：
bool Val = ws ["Cell Address"].BoolValue;bool Val = ws ["Cell Address"].BoolValue;Dim Val As Boolean = ws ("Cell Address").BoolValueVB C#
10. 如何將 Excel 文件解析成 C# 集合
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
var array = ws ["B6:F6"].ToArray();
int item = array.Count();
string total_items = array [0].Value.ToString();
Console.WriteLine("First item in the array: {0}", item);
Console.WriteLine("Total items from B6 to F6: {0}",total_items);
Console.ReadKey();
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
var array = ws ["B6:F6"].ToArray();
int item = array.Count();
string total_items = array [0].Value.ToString();
Console.WriteLine("First item in the array: {0}", item);
Console.WriteLine("Total items from B6 to F6: {0}",total_items);
Console.ReadKey();
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
Dim array = ws ("B6:F6").ToArray()
Dim item As Integer = array.Count()
Dim total_items As String = array (0).Value.ToString()
Console.WriteLine("First item in the array: {0}", item)
Console.WriteLine("Total items from B6 to F6: {0}",total_items)
Console.ReadKey()
End SubVB C#
10.1 如何將 Excel WorkSheet 解析為 DataTable
IronXL 的一個出色功能是我們可以輕鬆地將特定的 Excel WorkSheet 轉換為 DataTable。為此，我們可以使用 `.ToDataTable() IronXL 的功能如下：
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
//parse sheet1 of sample.xlsx file into DataTable.
//we set parameter true of ToDataTable() function,so first row of Excel file becomes columnname of DataTable
DataTable dt = ws.ToDataTable(true);
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
//parse sheet1 of sample.xlsx file into DataTable.
//we set parameter true of ToDataTable() function,so first row of Excel file becomes columnname of DataTable
DataTable dt = ws.ToDataTable(true);
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
'parse sheet1 of sample.xlsx file into DataTable.
'we set parameter true of ToDataTable() function,so first row of Excel file becomes columnname of DataTable
Dim dt As DataTable = ws.ToDataTable(True)
End SubVB C#
10.2 如何將 Excel 文件解析為 DataSet
如果我們想將整個 Excel 文件解析為 DataSet，那麼為此我們可以使用 `.ToDataSet() 在 IronXL 中的 function。
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
//parse WorkBook wb into DataSet
DataSet ds = wb.ToDataSet();
//we also can get DataTable from ds which is actually WorkSheet as:
DataTable dt=ds.Tables [0];
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
//parse WorkBook wb into DataSet
DataSet ds = wb.ToDataSet();
//we also can get DataTable from ds which is actually WorkSheet as:
DataTable dt=ds.Tables [0];
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
'parse WorkBook wb into DataSet
Dim ds As DataSet = wb.ToDataSet()
'we also can get DataTable from ds which is actually WorkSheet as:
Dim dt As DataTable=ds.Tables (0)
End SubVB C#
10.3 在特定範圍內讀取 Excel 數據
IronXL 提供了一種智能方法來在特定範圍內讀取 Excel 文件數據。該範圍可以應用於行和列。
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
//get specified range values by loop
foreach (var item in ws ["B3:B8"])
{
Console.WriteLine("Value is: {0}", item);
}
Console.ReadKey();
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
//get specified range values by loop
foreach (var item in ws ["B3:B8"])
{
Console.WriteLine("Value is: {0}", item);
}
Console.ReadKey();
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
'get specified range values by loop
For Each item In ws ("B3:B8")
Console.WriteLine("Value is: {0}", item)
Next item
Console.ReadKey()
End SubVB C#
上面的程式碼顯示以下輸出：
控制台輸出以訪問範圍 B3:B8 的所有值
並生成 Excel 檔案 sample.xlsx 的值：
從 sample.xlsx 顯示數據
此外，IronXL 也與許多 Excel 方法相容，以便與儲存格互動，包括 樣式和邊框, 數學函數, 條件 [格式] 或從可用數據創建圖表。
11. 如何讀取 Excel 文件中的布林資料
在應用程式開發中，我們需要根據 Excel 文件中的布林資料型別來進行決策。
static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
foreach (var item in ws ["G1:G10"])
{
Console.WriteLine(" Condition is: {0}", item.BoolValue);
}
Console.ReadKey();
}static void Main(string [] args)
{
WorkBook wb = WorkBook.Load("sample.xlsx");
WorkSheet ws = wb.GetWorkSheet("Sheet1");
foreach (var item in ws ["G1:G10"])
{
Console.WriteLine(" Condition is: {0}", item.BoolValue);
}
Console.ReadKey();
}Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")
For Each item In ws ("G1:G10")
Console.WriteLine(" Condition is: {0}", item.BoolValue)
Next item
Console.ReadKey()
End SubVB C#
從這裡得到輸出：
從獲取布林值數據的控制台輸出
以及 Excel 文件 sample.xlsx 中 C1 到 C10 的值：
Excel 範例與控制台輸出比較
12. 如何讀取完整的 Excel 工作表
使用行和列的索引來讀取完整的 Excel 工作表很簡單。為此，我們使用兩個循環：一個遍歷所有行，另一個遍歷特定行的所有列。然後，我們可以輕鬆獲取整個 Excel 工作表中的所有單元格值。
static void Main(string [] args)
{
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();
}static void Main(string [] args)
{
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();
}Shared Sub Main(ByVal args() As String)
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 SubVB C#
從讀取所有值的控制台輸出
13. 如何在沒有使用 Interop 的情況下讀取 Excel 文件
IronXL 是一個 Excel 函式庫用於 C# 和.NET，允許開發人員從XLS 和 XLSX文件讀取和編輯 Excel數據，而不使用 Microsoft.Office.Interop.Excel。
該API使我們能夠直觀地創建、讀取、操作、保存和導出Excel文件，支持：
新增以下命名空間：
using IronXL;
using System;
using System.Linq;using IronXL;
using System;
using System.Linq;Imports IronXL
Imports System
Imports System.LinqVB C#
現在在主函數內寫下以下代碼。
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);
}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);
}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 cellVB C#
每個單元格的控制台輸出
IronXL 也完全支援 ASP.NET、MVC、Windows、macOS、Linux、iOS 和 Android 移動應用程式開發。
14. 結論與 IronXL 特別優惠
除了 CSV 解析 在 C# 中，IronXL 只需兩行代碼即可將 CSV 文件轉換為 Excel 文件。!
使用C#或VB.NET，您可以非常容易地使用IronXL的Excel API，而無需使用Interop。您可以讀取、編輯和創建Excel電子表格，或使用其他Excel格式，如 XLS/XLSX/CSV/TSV. 支援多個框架，你可以以兩個產品的價格購買五個產品。 點擊 我們的價格頁面 欲了解更多信息。
Iron Suite 的五個產品
