Class FireBird Help me.

Question

Example SQL connection
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using MySql.Data.MySqlClient;
namespace Perpustakaan
{
class Example
{
}
class DbMySQL
{
string ConnString ;
public DbMySQL()
{
ConnString="DataSource=localhost;Username=root;password=;Database=db_perpus_ik3";
}
// -- jenis Query
// Query Pemilihan Data -> Select <namafield> FROM <namatabel> [WHERE kondisi]
public DataTable GetDataTable(string Query)
{
DataTable result = new DataTable();
MySqlConnection MyConn = new MySqlConnection(ConnString);
MyConn.Open();
MySqlCommand MyComm = new MySqlCommand(Query, MyConn);
MySqlDataReader myReader = MyComm.ExecuteReader();
result.Load(myReader);
MyConn.Close();
return result;
}
// Query Manipulasi Data
// -> tambah data > INSERT INTO <namatabel> (namafield1,namafield2,..) VALUES ('nilaifield1','nilaifield2',..)
// -> rubah data > UPDATE <namatabel> SET namafield='nilaifield',namafield2=nilaifield2,.. [WHERE kondisi]
// -> hapus data > DELETE FROM <namatabel> [where kondisi]
public void ExecuteNonQuery(string Query)
{
MySqlConnection myConn = new MySqlConnection(ConnString);
myConn.Open();
MySqlCommand myComm = new MySqlCommand(Query, myConn);
myComm.ExecuteNonQuery();
myConn.Close();
}
}
}