首页 > 代码库 > dapper.rainbow
dapper.rainbow
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data.SqlClient; using Dapper; // to have a play, install Dapper.Rainbow from nuget namespace TestDapper{ class Program { // no decorations, base class, attributes, etc class Product { public int Id { get; set; } public string Name { get; set; } public string Description { get; set; } public DateTime? LastPurchase { get; set; } } // container with all the tables class MyDatabase : Database<MyDatabase> { public Table<Product> Products { get; set; } } static void Main(string[] args) { var cnn = new SqlConnection("Data Source=.;Initial Catalog=tempdb;Integrated Security=True"); cnn.Open(); var db = MyDatabase.Init(cnn, commandTimeout: 2); try { db.Execute("waitfor delay ‘00:00:03‘"); } catch (Exception) { Console.WriteLine("yeah ... it timed out"); } db.Execute("if object_id(‘Products‘) is not null drop table Products"); db.Execute(@"create table Products ( Id int identity(1,1) primary key, Name varchar(20), Description varchar(max), LastPurchase datetime)"); int? productId = db.Products.Insert(new {Name="Hello", Description="Nothing" }); var product = db.Products.Get((int)productId); product.Description = "untracked change"; // snapshotter tracks which fields change on the object var s = Snapshotter.Start(product); product.LastPurchase = DateTime.UtcNow; product.Name += " World"; // run: update Products set LastPurchase = @utcNow, Name = @name where Id = @id // note, this does not touch untracked columns db.Products.Update(product.Id, s.Diff()); // reload product = db.Products.Get(product.Id); Console.WriteLine("id: {0} name: {1} desc: {2} last {3}", product.Id, product.Name, product.Description, product.LastPurchase); // id: 1 name: Hello World desc: Nothing last 12/01/2012 5:49:34 AM Console.WriteLine("deleted: {0}", db.Products.Delete(product.Id)); // deleted: True Console.ReadKey(); } }}
先mark下,有空测试下性能。 感觉很方便
dapper.rainbow
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。