Oracle技术交流与认证 / 最简单的.NET连接Oracle Demo

using System.Data;
using System.Data.OracleClient;

string connectionString="Data Source=test;User Id=scott;Password=tiger;Integrated Security=no";
public void ReadData(string connectionString)
{
    string queryString = "SELECT EmpNo, EName FROM Emp";
    using (OracleConnection connection = new OracleConnection(connectionString))
    {
        OracleCommand command = new OracleCommand(queryString, connection);
        connection.Open();
        OracleDataReader reader;
        reader = command.ExecuteReader();
        // Always call Read before accessing data.
        while (reader.Read())
        {
            Console.WriteLine(reader.GetInt32(0) + ", " + reader.GetString(1));
        }
        // always call Close when done reading.
        reader.Close();
    }
}

代码并不重要,问题是在开头的引用

需要在"项目-->添加引用-->.NET-->System.Data.SqlClient".

若是用ODBC或OleDB,则直接using好了.