using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Sql;
using System.Data.SqlClient;

namespace CalculatorWpf
{
    class Memory
    {

        private SqlConnection sqlConnect;
        private SqlDataAdapter sqlDataAdapter;
        private SqlCommand sqlComandBuilder;
        private SqlDataReader sqlDataReader;

        public Memory()
        {
         
        }

        public void DataReader()
        {
   using(sqlConnect=new SqlConnection("Data Source=михапк.Membery.dbo"))
            {
                string query ="SELECT * FROM Member";
                sqlComandBuilder = new SqlCommand(query,sqlConnect);
                sqlConnect.Open();
                sqlDataReader = sqlComandBuilder.ExecuteReader();
                while (sqlDataReader.Read())
                {
                    Console.WriteLine(sqlDataReader[1]);
                }
            }
        }
    }
}

using(sqlConnect=new SqlConnection("Server = михапк; Database = Membery.dbo; Password = 1234; "))

using(sqlConnect=new SqlConnection("Data Source = МИХАПК; Initial Catalog = Membery; Integrated Security=True"))