How to insert the CSV data into the database table

OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "CSV document(*.csv)|*.csv";
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK)
{
    string csvFile = dialog.FileName;
    Workbook workbook = new Workbook();
    workbook.LoadFromFile(@"..\csvtodatatable.csv", ",");
    Worksheet worksheet = workbook.Worksheets[0];
    System.Data.DataTable t = worksheet.ExportDataTable();
    this.dataGridView1.DataSource = t;