Question

When i try compile my code i have error

error C3673: Oracle::DataAccess::Client::OracleDataReader: the class has no copy constructor

And i can’t find OracleDataReader component. There is code

    Form1(void)
    {
        InitializeComponent();
        String^ ConStr = "User Id=user;Password=password;" +
                        "Data Source=db;";
        oracleConnection1->ConnectionString= ConStr;
        oracleConnection1->Open();  

        oracleCommand1->Connection= oracleConnection1;
        oracleCommand1->CommandText = "select * from sometable";
        oracleCommand1->CommandType = CommandType.Text;
        oracleCommand1->ExecuteNonQuery();
                OracleDataReader data= gcnew  Oracle::DataAccess::Client::OracleCommand() ;
        data  = cmd.ExecuteReader();
    }

Can anyone tell what i’m doing wrong?

P.S. I use VS Express Edition.

Answer 1

Form1(void)
    {
        InitializeComponent();
        String^ ConStr = "User Id=user;Password=password;" +
                        "Data Source=db;";
        oracleConnection1->ConnectionString= ConStr;
        oracleConnection1->Open();  
        Oracle::DataAccess::Client::OracleCommand oracleCommand1 = gcnew Oracle::DataAccess::Client::OracleCommand(oracleConnection1); 
        // get query results
        oracleCommand1->Connection= oracleConnection1;
        oracleCommand1->CommandText = "select * from sometable";
        oracleCommand1->CommandType = CommandType.Text;
        OracleDataReader _OracleDataReader = _oracleCommand1->ExecuteReader();

    }