使用C＃连接到Oracle DB

Question

I want to connect Oracle Database in .net platform using C#

and here is some code

  _connectionString = "Provider=MSDAORA.1;Data Source=yong;User ID=XXXX;Password=XXXX";

  using (OdbcConnection sqlConnection = new OdbcConnection(_connectionString))
            {
                using (OdbcDataAdapter adapter = new OdbcDataAdapter())
                {
                    try {
                        adapter.SelectCommand = new OdbcCommand(cmdText, sqlConnection);
                        adapter.SelectCommand.CommandType = commandType;
                        adapter.SelectCommand.CommandTimeout = _commandTimeOut;
                        adapter.SelectCommand.Connection.Open();
                        adapter.Fill(dtResult);
                        }
                catch (Exception ex)
                {
                    throw ex;
                }
               }
            }

when I try this code, it throws error like

" msdaora.1' provider is not registered on the local machine "

I don't get what is a problem and how to fix this. How do I register a msdaora.1 provider on the local machine and what's wrong with my code?

Answer 1

Try downloading and installing the Oracle Data Access Components. Here are links to the 32 bit and 64 bit versions. Also, just from personal experience, I would use the oracle OleDb adapter instead of that one, but that's because I've had trouble connecting to RAC clusters with other adapters.

Edit: You're also going to run into problems when you deploy the app to an environment that doesn't have ODAC installed, so here some further suggested reading .