How to export data from XLS spreadsheet to DataSet with Spreadsheet SDK

using System;
using System.Data;
 
namespace Bytescout.Spreadsheet.Demo.Csharp.ExportToDataSet
{
    class Program
    {
        static void Main(string[] args)
        {
            const string inputFile = @"PeriodicTableOfElementsSpreadsheet.xls";
 
            // Open and load spreadsheet
            Spreadsheet spreadsheet = new Spreadsheet();
            spreadsheet.LoadFromFile(inputFile);
 
            // Get the data from the spreadsheet
            DataSet dataSet = spreadsheet.ExportToDataSet();
 
            // Close spreadsheet
            spreadsheet.Close();
 
            // Display data in the first data table in the dataset
            DataTable dt = dataSet.Tables[0];
            Console.WriteLine("Displaying contents of first datatable");
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    Console.Write(dt.Rows[i][j] + " ");
                }
                Console.WriteLine();
            }
 
            // Pause
            Console.ReadLine();
        }
    }
}

Module Module1
 
    Sub Main()
        Dim inputFile As String = "PeriodicTableOfElementsSpreadsheet.xls"
 
        'Open and load spreadsheet
        Dim spreadsheet = New Spreadsheet()
        spreadsheet.LoadFromFile(inputFile)
 
        'Get the data from the spreadsheet
        Dim ds As DataSet = spreadsheet.ExportToDataSet()
 
        'Close spreadsheet
        spreadsheet.Close()
 
        'Display data in first datatable of dataset
        Dim dt As DataTable = ds.Tables(0)
        Console.WriteLine("Displaying contents of first datatable")
        For i As Integer = 0 To dt.Rows.Count - 1
            For j As Integer = 0 To dt.Columns.Count - 1
 
                Console.Write(dt.Rows(i)(j) + " ")
            Next
            Console.WriteLine()
        Next
 
        'Pause
        Console.ReadLine()
    End Sub
 
End Module