如何在C＃中编写正确的oracle连接字符串？

Question

I'm beginner in oracle and c# ,i want simple application in c# use the oracle database,i write this connection string for connect to the database:

conn.ConnectionString = "Data Source=BEHBEHZAD;User ID=SYSTEM;Password=beh1368421";

my full code is this:

OracleConnection conn = new OracleConnection();
            conn.ConnectionString = "Data Source=BEHBEHZAD;User ID=SYSTEM;Password=beh1368421";

            try
            {
                conn.Open();
                conn.Close();
                MessageBox.Show("Connect Successfull!!");
            }
            catch (Exception )
            {
                MessageBox.Show("Disconnect!!");

            }

but when i run that program i get Disconnect Message,my TNS file detail is this:

BEHBEHZAD =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = behbehzad)
    )
  )

How can i solve that?thanks.

Answer 1

ORA-12557 is apparently not related to your connection string but to a problem with your Path variable. Please follow the instructions in this article .