// Dapper Plus

// Doc: https://dapper-tutorial.net/query

​

// @nuget: Dapper -Version 1.60.6

​

using Dapper;

using System;

using System.Data;

using System.Data.SqlClient;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public class Order

    {

        public int OrderID { get; set; }

        public int CustomerID { get; set; }

        public DateTime OrderDate  { get; set; }

        public int ShipperID  { get; set; }

    }

    public static void Main()

    {

        string sql = @"

            SELECT TOP 10

                EmployeeID,

                OrderID,

                CustomerID,

                OrderDate,

                ShipperID

            FROM Orders 

            ORDER BY OrderID;

        ";

​

        using (var connection = new SqlConnection(FiddleHelper.GetConnectionStringSqlServerW3Schools()))

        {           

            var rawList = connection.Query<Order>(sql);

            FiddleHelper.WriteTable(rawList);   

​

                var dict = connection.Query<int, List<Order>, KeyValuePair<int, List<Order>>>(sql,

                    (s, i) => new KeyValuePair<int, List<Order>>(s, i), null, null, true, "OrderID")

                    .ToDictionary(kv => kv.Key, kv => kv.Value);

            FiddleHelper.WriteTable(dict);              

        }

    }

}