C# で XLSX ファイルを読み取る

/**
Load Workbook
anchor-load-workbook
**/
WorkBook wb = WorkBook.Load("sample.xlsx");//Excel file path

'''
'''Load Workbook
'''anchor-load-workbook
'''*
Dim wb As WorkBook = WorkBook.Load("sample.xlsx") 'Excel file path

/**
Access Sheet by Name
anchor-access-specific-worksheet
**/
WorkSheet ws = wb.GetWorkSheet("Sheet1"); //by sheet name

'''
'''Access Sheet by Name
'''anchor-access-specific-worksheet
'''*
Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1") 'by sheet name

/**
Access Sheet by Index
anchor-access-specific-worksheet
**/
WorkSheet ws = wb.WorkSheets [0]; //by sheet index

'''
'''Access Sheet by Index
'''anchor-access-specific-worksheet
'''*
Dim ws As WorkSheet = wb.WorkSheets (0) 'by sheet index

WorkSheet ws = wb.DefaultWorkSheet; //for the default sheet: 

Dim ws As WorkSheet = wb.DefaultWorkSheet 'for the default sheet:

WorkSheet ws = wb.WorkSheets.First();//for the first sheet:

Dim ws As WorkSheet = wb.WorkSheets.First() 'for the first sheet:

WorkSheet ws = wb.WorkSheets.FirstOrDefault();//for the first or default sheet:

Dim ws As WorkSheet = wb.WorkSheets.FirstOrDefault() 'for the first or default sheet:

string c = ws ["cell address"].ToString(); //for string
Int32 val = ws ["cell address"].Int32Value; //for integer

Dim c As String = ws ("cell address").ToString() 'for string
Dim val As Int32 = ws ("cell address").Int32Value 'for integer

foreach (var cell in ws ["A2:A10"])
{
    Console.WriteLine("value is: {0}",  cell.Text);
}

For Each cell In ws ("A2:A10")
	Console.WriteLine("value is: {0}", cell.Text)
Next cell

/**
Access WorkSheet Data
anchor-access-data-from-worksheet
**/
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();
}

'''
'''Access WorkSheet Data
'''anchor-access-data-from-worksheet
'''*
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 Sub

decimal sum = ws ["From:To"].Sum();
decimal min = ws ["From:To"].Min();
decimal max = ws ["From:To"].Max();

Dim sum As Decimal = ws ("From:To").Sum()
Dim min As Decimal = ws ("From:To").Min()
Dim max As Decimal = ws ("From:To").Max()

/**
Sum Min Max Functions
anchor-perform-functions-on-data
**/
using IronXL;
static void Main(string [] args)
{
    WorkBook wb = WorkBook.Load("sample.xlsx");
    WorkSheet ws = wb.GetWorkSheet("Sheet1");

    decimal sum = ws ["G2:G10"].Sum();
    decimal min = ws ["G2:G10"].Min();
    decimal max = ws ["G2:G10"].Max();

    Console.WriteLine("Sum is: {0}", sum);
    Console.WriteLine("Min is: {0}", min);
    Console.WriteLine("Max is: {0}", max);
    Console.ReadKey();
}

'''
'''Sum Min Max Functions
'''anchor-perform-functions-on-data
'''*
Imports IronXL
Shared Sub Main(ByVal args() As String)
	Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
	Dim ws As WorkSheet = wb.GetWorkSheet("Sheet1")

	Dim sum As Decimal = ws ("G2:G10").Sum()
	Dim min As Decimal = ws ("G2:G10").Min()
	Dim max As Decimal = ws ("G2:G10").Max()

	Console.WriteLine("Sum is: {0}", sum)
	Console.WriteLine("Min is: {0}", min)
	Console.WriteLine("Max is: {0}", max)
	Console.ReadKey()
End Sub

DataTable dt=WorkSheet.ToDataTable();

Dim dt As DataTable=WorkSheet.ToDataTable()

DataTable dt=WorkSheet.ToDataTable(True);

Dim dt As DataTable=WorkSheet.ToDataTable([True])

/**
WorkSheet as DataTable
anchor-read-excel-worksheet-as-datatable
**/
using IronXL;
using System.Data; 
static void Main(string [] args)
{

    WorkBook wb = WorkBook.Load("sample.xlsx");
    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]);
        }

    }
}

'''
'''WorkSheet as DataTable
'''anchor-read-excel-worksheet-as-datatable
'''*
Imports IronXL
Imports System.Data
Shared Sub Main(ByVal args() As String)

	Dim wb As WorkBook = WorkBook.Load("sample.xlsx")
	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

	Next row
End Sub

DataSet ds = WorkBook.ToDataSet();

Dim ds As DataSet = WorkBook.ToDataSet()

/**
Excel File as DataSet
anchor-read-excel-file-as-dataset
**/
using IronXL;
using System.Data; 
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);
    }
}

'''
'''Excel File as DataSet
'''anchor-read-excel-file-as-dataset
'''*
Imports IronXL
Imports System.Data
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 Sub

/**
WorkSheet Cell Values
anchor-read-excel-file-as-dataset
**/
using IronXL;
using System.Data; 
static void Main(string [] args)
{ 
WorkBook wb = WorkBook.Load("sample.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]);
        }
    }
}
}

'''
'''WorkSheet Cell Values
'''anchor-read-excel-file-as-dataset
'''*
Imports IronXL
Imports System.Data
Shared Sub Main(ByVal args() As String)
Dim wb As WorkBook = WorkBook.Load("sample.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
	Next row
Next dt
End Sub