اخي الحبيب مافهمت سؤالك منيح بس إذا بدك تربط قاعدة بينانات سي بلس مع الأوراكل تفضل
كود:
using System.Data; 
using System.Data.OleDb; 

class OleDbConnectionOracle 
{ 
  public static void Main() 
  { 
    string connectionString = "provider=MSDAORA;data source=ORCL;user id=SCOTT;password=TIGER"; 
    OleDbConnection myOleDbConnection = new OleDbConnection(connectionString); 

    OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand(); 

    myOleDbCommand.CommandText = "SELECT empno, ename, sal FROM emp WHERE empno = 7369"; 

    myOleDbConnection.Open(); 

    OleDbDataReader myOleDbDataReader = myOleDbCommand.ExecuteReader(); 

    myOleDbDataReader.Read(); 

    Console.WriteLine("myOleDbDataReader[\" empno\"] = " + myOleDbDataReader["empno"]); 
    Console.WriteLine("myOleDbDataReader[\" ename\"] = " + myOleDbDataReader["ename"]); 
    Console.WriteLine("myOleDbDataReader[\" sal\"] = " + myOleDbDataReader["sal"]); 

    myOleDbDataReader.Close(); 
    myOleDbConnection.Close(); 
  } 
}