Import Data from excel and save it in Database

hi
the fallowing code will be excel data you can bind to grid view.
DataTable dt = new DataTable();
                    SqlConnection strConnection = new SqlConnection(ConfigurationSettings.AppSettings["ConnectionString"]);
                    strConnection.Open();
                    string filepath = textBox1.Text;
                    string excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties=Excel 12.0;";          //Create Connection to Excel work book
                    OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
                    excelConnection.Open();
                    OleDbDataAdapter da = new OleDbDataAdapter("Select [ISBN/Code],[Title],[Publisher],[Author],[Qty],[Price],[Rate In INR],[Disc%],[Value In INR] from [Sheet1$]", excelConnection);
                    da.Fill(dt);
                    if (dt.Rows.Count > 0)
                    {
                        grdInvoiceUploader.DataSource = dt.DefaultView;
}