// Dapper Plus

// Doc: https://dapper-plus.net/dapper-plus-context

​

// @nuget: Dapper

// @nuget: Microsoft.Data.SqlClient

// @nuget: Z.Dapper.Plus

​

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using System.Linq;

using Microsoft.Data.SqlClient;

using Dapper;

using Z.Dapper.Plus;

​

public class Program

{   

    public static void Main()

    {

        // Map your entity

        DapperPlusManager.Entity<Product>()

            .Table("Product")

            .Identity(x => x.ProductID);

        var products = new List<Product>();

        products.Add(new Product() { ProductID = 13, 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() { ProductID = 66, 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() { ProductID = 99, 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>();

        CustomInsert(products.Take(1), false, new List<string>() { "Name"});

        CustomInsert(products.Skip(1), true, new List<string>() { "Name", "Description"});

        // Query data with Dapper

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

    }

    public static void CustomInsert(IEnumerable<Product> products, bool keepIdentityValue, List<string> mappingColumnNames)

    {

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

        var context = new DapperPlusContext(connection);

​

        var mapping = context.Entity<Product>().Identity(x => x.ProductID);

        mappingColumnNames.ForEach(x => mapping.Map(x));

​

        if(keepIdentityValue)

        {

            mapping.UseBulkOptions(options => options.InsertKeepIdentity = true);

        }

​

        context.BulkInsert(products);

    }

​

    [Table("Product")]

    public class Product

    {

        [Key]

        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]

        public int ProductID { get; set; }

        public string? Name { get; set; }

        public string? Description { get; set; }

    }

}