// Dapper Plus

// Doc: https://dapper-plus.net/bulk-insert

​

// @nuget: Dapper

// @nuget: Microsoft.Data.SqlClient

// @nuget: Z.Dapper.Plus

​

using System;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using Microsoft.Data.SqlClient;

using Dapper;

using Z.BulkOperations;

using Z.Dapper.Plus;

​

public class Program

{   

    public static void Main()

    {

        // ADD a global value converter to handle DateTime2 to DateTime (only work within our library)

        Z.BulkOperations.BulkOperationManager.AddValueConverter(new DateTimeHandler());

        // Map your entity

        DapperPlusManager.Entity<Product>()

            .Table("Product")

            .Identity(x => x.ProductID);

        var products = new List<Product>();

        products.Add(new Product() { Name = "Dapper Plus", Description = @"Use <a href=""https://dapper-plus.net/"" target=""_blank"">Dapper Plus</a> to extend your IDbConnection with high-performance bulk operations." });

        products.Add(new Product() { Name = "C# Eval Expression", Description = @"Use <a href=""https://eval-expression.net/"" target=""_blank"">C# Eval Expression</a> to compile and execute C# code at runtime." });

        products.Add(new Product() { Name = "Entity Framework Extensions", Description = @"Use <a href=""https://entityframework-extensions.net/"" target=""_blank"">Entity Framework Extensions</a> to extend your DbContext with high-performance bulk operations." });

        var connection = new SqlConnection(FiddleHelper.GetConnectionStringSqlServer());

        connection.CreateTable<Product>();

        // Easy to use

        connection.BulkInsert(products);

        // Query data with Dapper

        FiddleHelper.WriteTable(connection.Query<Product>("SELECT * FROM Product"));

    }

    public class DateTimeHandler : BulkValueConverter<DateTime>

    {

        public override DateTime ConvertFromProvider(object value)

        {

            var date = base.ConvertFromProvider(value);

​

            if(date == new DateTime(1753, 01, 01))

            {

                date = DateTime.MinValue;

            }

​

            return date;

        }

​

        public override object ConvertToProvider(DateTime value)

        {

            if(value == DateTime.MinValue)

            {

                value = new DateTime(1753, 01, 01);

            }

            return base.ConvertToProvider(value);

        }

    }

    [Table("Product")]

    public class Product

    {

        [Key]

        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]

        public int ProductID { get; set; }

        public string Name { get; set; }

        public string Description { get; set; }

        [Column(TypeName = "DateTime")]

        public DateTime CreatedDate { get; set; }

    }

}