Excel to SQL and DataGrid via DataTable
using IronXL;
using System;
using System.Data;

// Supported for XLSX, XLS, XLSM, XLTX, CSV and TSV
WorkBook workBook = WorkBook.Load("sample.xlsx");

// Select default sheet
WorkSheet workSheet = workBook.DefaultWorkSheet;

// Convert the worksheet to DataTable
DataTable dataTable = workSheet.ToDataTable(true);

// Enumerate by rows or columns first at your preference
foreach (DataRow row in dataTable.Rows)
{
    for (int i = 0 ; i < dataTable.Columns.Count ; i++)
    {
        Console.Write(row[i]);
    }
}
NuGet Download
PM > Install-Package IronXL.Excel
Excel to SQL and DataGrid via DataTable

Excel to SQL and DataGrid via DataTable

Convert XLSX, XLS, XLSM, XLTX, CSV and TSV files to a System.Data.DataTable for full interoperability with System.Data.SQL or to populate a DataGrid.

Input true to ToDataTable method to set the first row as column names of the table. The DataTable can populate a DataGrid.

Learn to Export DataTable to Excel in C#
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