// Bulk Operations

// Doc: https://bulk-operations.net/bulk-insert

​

// @nuget: Z.BulkOperations

// @nuget: System.Data.SqlClient

// @nuget: Microsoft.Data.Sqlite

​

using System;

using System.Data;

using Z.BulkOperations;

using Microsoft.Data.Sqlite;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        using (var connection = new SqliteConnection("DataSource=:memory:"))

        {

            connection.Open();

            GenerateDatabase(connection);

            var dtCustomers = GenerateCustomers(5);

            using (var bulk = new BulkOperation(connection))

            {

                bulk.DestinationTableName = "Customers";

                bulk.AutoMapOutputIdentity = true;

​

                bulk.BulkInsert(dtCustomers);

            }

            FiddleHelper.WriteTable(dtCustomers);

        }

    }

    private static DataTable GenerateCustomers(int count) 

    {

        DataTable dtTable = new DataTable("Customers");

        dtTable.Columns.Add("CustomerID", typeof(int));

        dtTable.Columns.Add("Name", typeof(string)); 

        for(int i = 0; i < count; i++)

        {

            var drCustomer = dtTable.NewRow();  

            drCustomer["Name"] = "Customer_" + i;  

            dtTable.Rows.Add(drCustomer);

        }

        return dtTable;

    }

    private static void GenerateDatabase(SqliteConnection connection)

    {

        using (var command = connection.CreateCommand())

        {

            command.CommandText = @"   

CREATE TABLE [Customers]

(

    [CustomerID] [INTEGER] PRIMARY KEY,

    [Name] [TEXT](500) NULL

)";

            command.ExecuteNonQuery();

        }

    }

}