sql SqlBulkCopy

   public void BuckCopy(DataTable dt, string destinationTableName)
        {
            using (SqlConnection sqlConn = (SqlConnection)this.CurrentDataBase.CreateConnection())
            {
                if (sqlConn.State != ConnectionState.Open)
                    sqlConn.Open();
                using (SqlBulkCopy buckCopy = new SqlBulkCopy(sqlConn))
                {
                    buckCopy.DestinationTableName = destinationTableName;
                    buckCopy.ColumnMappings.Add("ID", "ID");                    
                    buckCopy.WriteToServer(dt);
                }
            }
        }