How to Process large collection on multiple Thread in c#

private static void BulkCopyTable(DataTable table, SqlConnection dbConnection)
 {
     using (SqlBulkCopy s = new SqlBulkCopy(dbConnection))
     {
         s.BatchSize = 1000;
         s.DestinationTableName = table.TableName;
         Debug.WriteLine("Table: {0}",table.TableName);
         foreach (var column in table.Columns)
         {
             s.ColumnMappings.Add(column.ToString(), column.ToString());
             Debug.WriteLine(column.ToString());
         }
         s.WriteToServer(table);
     }

     table.Clear();
 }