Oracle.ManagedDataAccess.dll开发实例（用于Visual Studio 开发中连接Oracle数据库）

using Oracle.ManagedDataAccess.Client;
using System;
class Program
{
    static void Main()
    {
        // 连接字符串
        string connectionString = "User Id=your_user;Password=your_password;Data Source=your_tns_name";
        // 创建连接对象
        using (OracleConnection connection = new OracleConnection(connectionString))
        {
            try
            {
                // 打开连接
                connection.Open();
                Console.WriteLine("连接成功！");
                // 创建命令对象
                OracleCommand command = new OracleCommand("SELECT * FROM your_table", connection);
                // 执行查询
                using (OracleDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        // 读取数据
                        Console.WriteLine(reader["column_name"]);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("连接或查询失败: "   ex.Message);
            }
        }
    }
}