How to read Excel data in insert into SQL database in WPF

namespace dataexport

{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
          Workbook workbook = new Workbook();
          workbook.LoadFromFile(@"D:\dataexport.xls", ExcelVersion.Version97to2003);  
          Worksheet sheet = workbook.Worksheets[0];
          DataTable dataTable = sheet.ExportDataTable();
          DataView view = new DataView(dataTable);
          this.dataGrid1.ItemsSource = view;
          this.dataGrid1.AutoGenerateColumns = true;
        }
    }
}