ConnectMysqlSample.cs

using MySql.Data.MySqlClient;
using System;
using System.Data;

namespace ConnectMysqlSample
{
    class Program
    {
        static void Main(string[] args)
        {
            string server = "localhost";
            string database = "sample_db";
            string user = "root";
            string pass = "";

            string myConnectionString = string.Format(
                "Server={0};Database={1};Uid={2};Pwd={3}",
                server,
                database,
                user,
                pass);
            
            using (var connection = new MySqlConnection(myConnectionString))
            {
                try
                {
                    connection.Open();
                    var cmd = connection.CreateCommand();
                    cmd.CommandText = "Select * From sample_table";
                    var dataAdapter = new MySqlDataAdapter(cmd);
                    var dataSet = new DataSet();
                    dataAdapter.Fill(dataSet);
                    Console.WriteLine(dataSet.GetXml());
                    connection.Close();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Error : " + e.Message);
                }
                Console.ReadLine();
            }
        }
    }
}