How to dump data present in xls file or text file to database in c#

if (openFileDialog.ShowDialog(this) == DialogResult.OK)
  {
      path = openFileDialog.InitialDirectory + openFileDialog.FileName;
  }
  string constring = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" + path + "; Extended Properties=Excel 12.0 Xml";
  OleDbConnection con = new OleDbConnection(constring);
  try
  {
      con.Open();
      dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
      String[] excelSheets = new String[dt.Rows.Count];
      i = 0;
      foreach (DataRow row in dt.Rows)
      {
          excelSheets[i] = row["TABLE_NAME"].ToString();
          i++;
      }

      for (int j = 0; j < excelSheets.Length; j++)
      {
          string query = "SELECT * FROM [" +excelSheets[j]+ "]; ";
          OleDbDataAdapter adp = new OleDbDataAdapter(query, constring);

          DataSet ds = new DataSet();
          string hCode = string.Empty;
          string description = string.Empty;
          adp.Fill(ds);

          foreach (DataRow dr in ds.Tables[0].Rows)
          {
              hCode = Convert.ToString(dr[1]);
              description = Convert.ToString(dr[2]);
              if (!(string.IsNullOrEmpty(hCode) && string.IsNullOrEmpty(description)))
              {

                  dboject.InsertSiteNameIntoDatabase(hCode, description);

              }
          }


      }
      lblDisplay.Text = "Inserted successfully";

  }
  catch (Exception ex)
  {
      dboject.VMSLog(ex.Message);

  }
  finally
  {
      con.Close();

  }