Connecting to Oracle from Visual Studio 2010 - visual-studio-2010

Question

I would like to connect to an Oracle 11g databse from Visual Studio 2010 using ODBC. I was not able to connec tusing ODP.NET, so I want to try using ODBC. Can someone please tell me what are the steps involved in this?

Answer 1

Assuming you are using C#,
You will have to add a reference to System.Data.OracleClient.dll in your project
Here is some sample boilerplate code,
using System.Data.OracleClient;
static private string GetConnectionString()
{
// To avoid storing the connection string in your code,
// you can retrieve it from a configuration file.
return "Data Source=myserver.server.com;Persist Security Info=True;" +
"User ID=myUserID;Password=myPassword;Unicode=True";
}
// This will open the connection and query the database
static private void ConnectAndQuery()
{
string connectionString = GetConnectionString();
using (OracleConnection connection = new OracleConnection())
{
connection.ConnectionString = connectionString;
connection.Open();
Console.WriteLine("State: {0}", connection.State);
Console.WriteLine("ConnectionString: {0}",
connection.ConnectionString);
OracleCommand command = connection.CreateCommand();
string sql = "SELECT * FROM MYTABLE";
command.CommandText = sql;
OracleDataReader reader = command.ExecuteReader();
while (reader.Read())
{
string myField = (string)reader["MYFIELD"];
Console.WriteLine(myField);
}
}
}
Source - http://www.codeproject.com/KB/database/C__Instant_Oracle.aspx