Using DataTable in .NET Core

Question

I have a stored procedure in SQL Server that accepts a User-Defined Table Type. I\'m following the answer from this post Bulk insert from C# list into SQL Server into multip

Answer 1

Developer82,

I am in the same situation where i want to use .net core but the unavailability of datatable, dataset is a bummer. since you are referencing a post that uses a List i thought that maybe the goal is to get the C# List into the database the cleanest way possible. If that is the goal then this might help.

I have used Dapper located here in various projects. It is supported int .netcore. below is a small console app that takes a populated c# list and inserts it into the DB and then issues a Select on that table to writes out the results to the console.

using System;
using System.Data;
using Dapper;
using System.Data.Common;
using System.Data.SqlClient;
using System.Collections.Generic;

namespace TestConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            List dataItems = GetDataItems();

            var _selectSql = @"SELECT CustomerId, Name, BalanceDue from [dbo].[CustomerAccount]";

            var _insertSql = @"INSERT INTO [dbo].[CustomerAccount]
                                       ([CustomerId]
                                       ,[Name]
                                       ,[BalanceDue])
                                 VALUES
                                       (@CustomerId
                                       ,@Name
                                       ,@BalanceDue)";



            using (IDbConnection cn = new SqlConnection(@"Server=localhost\xxxxxxx;Database=xxxxdb;Trusted_Connection=True;"))
            {
                var rows = cn.Execute(_insertSql, dataItems,null,null,null );

                dataItems.Clear();

                var results = cn.Query(_selectSql);

                foreach (var item in results)
                {
                    Console.WriteLine("CustomerId: {0} Name {1} BalanceDue {2}", item.CustomerId.ToString(), item.Name, item.BalanceDue.ToString());
                }


            }

            Console.WriteLine("Press any Key");
            Console.ReadKey();

        }

        private static List GetDataItems()
        {
            List items = new List();

            items.Add(new DataItemDTO() { CustomerId = 1, Name = "abc1", BalanceDue = 11.58 });
            items.Add(new DataItemDTO() { CustomerId = 2, Name = "abc2", BalanceDue = 21.57 });
            items.Add(new DataItemDTO() { CustomerId = 3, Name = "abc3", BalanceDue = 31.56 });
            items.Add(new DataItemDTO() { CustomerId = 4, Name = "abc4", BalanceDue = 41.55 });
            items.Add(new DataItemDTO() { CustomerId = 5, Name = "abc5", BalanceDue = 51.54 });
            items.Add(new DataItemDTO() { CustomerId = 6, Name = "abc6", BalanceDue = 61.53 });
            items.Add(new DataItemDTO() { CustomerId = 7, Name = "abc7", BalanceDue = 71.52 });
            items.Add(new DataItemDTO() { CustomerId = 8, Name = "abc8", BalanceDue = 81.51 });

            return items;
        }
    }
}

I hope this code sample helps.

thank you.