//可以结合别名表，请看别名表的用法
                //db.SetMappingTables(mappingTableList);

                db.ClassGenerating.CreateClassFiles(db, ("e:/TestModels"), "Models");

                //只生成student和school表的实体
                db.ClassGenerating.CreateClassFilesByTableNames(db, "e:/TestModels2", "Models", new string[] { "student", "school" });

                //根据表名生成class字符串
                var str = db.ClassGenerating.TableNameToClass(db, "Student");

                var dynamicToClassStr = db.ClassGenerating.DynamicToClass(new { id = 1 }, "dyName");

                //根据SQL语句生成class字符串
                var str2 = db.ClassGenerating.SqlToClass(db, "select top 1 * from Student", "student");

                //改变值（lassTemplate.ItemTemplate=XXXX）可以自定义格式
                var tempItem = ClassTemplate.ItemTemplate;//例如可以在生成的实体添加默认构造函数给指定的字段赋默认值或者公司信息等
                var temp = ClassTemplate.Template;



                //设置新格式模板
                //主键Guid.New(),
                //CreateTime为DateTime.Now 
                //IsRemove=0
                //UpdateTime为DateTime.Now 
                ClassTemplate.Template = "using System;\r\nusing System.Linq;\r\nusing System.Text;\r\n\r\nnamespace $namespace\r\n{\r\n    public class $className\r\n    {\r\n        public $className() \r\n        { \r\n            this.CreateTime = DateTime.Now;\r\n            this.  = 0;\r\n            this.UpdateTime=DateTime.Now;\r\n            this.$primaryKeyName=Guid.NewGuid().ToString(\"N\").ToUpper();\r\n        }\r\n        $foreach\r\n    }\r\n}\r\n";

                //新格式的实体字符串
                var str3 = db.ClassGenerating.TableNameToClass(db, "Student");

  var r1 = db.GetDataTable("select * from student");
                var r2 = db.GetSingle<Student>("select top 1 * from student");
                var r3 = db.GetScalar("select  count(1) from student");
                var r4 = db.GetReader("select  count(1) from student");
                r4.Dispose();
                var r5 = db.GetString("select  top 1 name from student");
                var r6 = db.ExecuteCommand("select 1");


                //参数支持
                var p1 = db.GetDataTable("select * from student where id=@id", new {id=1 });
                var p2 = db.GetDataTable("select * from student where id=@id", new Dictionary<string, object>() { { "id", "1" } });//目前只支持 Dictionary<string, object>和Dictionary<string, string>
                var p3 = db.GetDataTable("select * from student where id=@id", new SqlParameter("@id",1) );

   //日志记录功能
    public class Log : IDemos
    {
       
        public void Init()
        {
            Console.WriteLine("启动Log.Init");
            using (var db = SugarDemoDao.GetInstance())
            {

                var a1 = db.Queryable<Student>().Where(it => it.id == 1).ToList();
                var a2 = db.Queryable<Student>().OrderBy(it => it.id).ToList();
            }
        }

        public class SugarConfigs
        {
            public static Action<string, string> LogEventStarting = (sql, pars) =>
            {
                Console.WriteLine("starting:" + sql + " " + pars);
                
                using (var db = SugarDemoDao.GetInstance())
                {
                    //日志记录件事件里面用到数据库操作 IsEnableLogEvent一定要为false否则将引起死循环，并且要新开一个数据实例 像我这样写就没问题。
                    db.IsEnableLogEvent = false;
                    db.ExecuteCommand("select 1");
                }
            };
            public static Action<string, string> LogEventCompleted = (sql, pars) =>
            {
                Console.WriteLine("completed:" + sql + " " + pars);
            };
        }

        /// <summary>
        /// SqlSugar
        /// </summary>
        public class SugarDemoDao
        {

            public static SqlSugarClient GetInstance()
            {
                var db = new SqlSugarClient(SugarDao.ConnectionString);
                db.IsEnableLogEvent = true;//启用日志事件
                db.LogEventStarting = SugarConfigs.LogEventStarting;
                db.LogEventCompleted = SugarConfigs.LogEventCompleted;
                return db;
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using SqlSugar;
namespace NewTest.Demos
{
    //别名表的功能
    public class MappingTable : IDemos
    {

        public void Init()
        {
            Console.WriteLine("启动MappingTable.Init");

            //单个设置
            using (var db = SugarDao.GetInstance())
            {
                var list = db.Queryable<V_Student>("Student").ToList();//查询的是 select * from student 而我的实体名称为V_Student
            }


            //全局设置
            using (var db = SugarFactory.GetInstance())
            {
                var list = db.Queryable<V_Student>().ToList();//查询的是 select * from student 而我的实体名称为V_Student
            }
        }


        /// <summary>
        /// 全局配置类
        /// </summary>
        public class SugarConfigs
        {
            //key类名 value表名
            public static List<KeyValue> MpList = new List<KeyValue>(){
            new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"},
            new KeyValue(){ Key="Student3", Value="Student"},
            new KeyValue(){ Key="V_Student", Value="Student"}
            };
        }

        /// <summary>
        /// SqlSugar实例工厂
        /// </summary>
        public class SugarFactory
        {

            //禁止实例化
            private SugarFactory()
            {

            }
            public static SqlSugarClient GetInstance()
            {
                string connection = SugarDao.ConnectionString; //这里可以动态根据cookies或session实现多库切换
                var db = new SqlSugarClient(connection);
                db.SetMappingTables(SugarConfigs.MpList);//设置关联表 (引用地址赋值，每次赋值都只是存储一个内存地址)
                return db;
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using SqlSugar;

namespace NewTest.Demos
{
    //行过滤加列过滤
    //权限管理的最佳设计
    public class Filter2 : IDemos
    {

        public void Init()
        {
            Console.WriteLine("启动Filter2.Init");
            using (SqlSugarClient db = SugarDaoFilter.GetInstance())//开启数据库连接
            {
                //设置走哪个过滤器
                db.CurrentFilterKey = "role1";
                //queryable
                var list = db.Queryable<Student>().ToJson(); //where id=1 , 可以查看id和name


                //设置走哪个过滤器
                db.CurrentFilterKey = "role2";
                //queryable
                var list2 = db.Queryable<Student>().ToJson(); //where id=2 , 可以查看name

            }
        }
        /// <summary>
        /// 扩展SqlSugarClient
        /// </summary>
        public class SugarDaoFilter
        {
            //禁止实例化
            private SugarDaoFilter()
            {

            }
            /// <summary>
            /// 页面所需要的过滤行
            /// </summary>
            private static Dictionary<string, Func<KeyValueObj>> _filterParas = new Dictionary<string, Func<KeyValueObj>>()
            {
              { "role1",()=>{
                        return new KeyValueObj(){ Key=" id=@id" , Value=new{ id=1}};
                   }
              },
              { "role2",()=>{
                  return new KeyValueObj() { Key = " id=@id", Value = new { id = 2 } };
                  }
              },
            };
            /// <summary>
            /// 页面所需要的过滤列
            /// </summary>
            private static Dictionary<string, List<string>> _filterColumns = new Dictionary<string, List<string>>()
            {
              { "role1",new List<string>(){"id","name"}
              },
              { "role2",new List<string>(){"name"}
              },
            };
            public static SqlSugarClient GetInstance()
            {
                string connection = SugarDao.ConnectionString; //这里可以动态根据cookies或session实现多库切换
                var reval = new SqlSugarClient(connection);

                //支持sqlable和queryable
                reval.SetFilterFilterParas(_filterParas);

                //列过滤只支持queryable
                reval.SetFilterFilterParas(_filterColumns);
                return reval;
            }
        }
    }
}

    //排除错误列
    public class IgnoreErrorColumns : IDemos
    {

        public void Init()
        {
            Console.WriteLine("启动IgnoreErrorColumns.Init");
            using (var db = SugarDao.GetInstance())
            {
                db.IsIgnoreErrorColumns = true;

                //Student表并没有 AreaName
               var id=  db.Insert<STUDENT>(new STUDENT() { name = "张三", AreaName = "北大" });


                db.Update<STUDENT>(new STUDENT() { id=id.ObjToInt() ,name = "张三2", AreaName = "北大" });
            }
        }
        public class STUDENT {
            /// <summary>
            /// Desc:- 
            /// Default:- 
            /// Nullable:False 
            /// </summary>
            public int id { get; set; }

            /// <summary>
            /// Desc:- 
            /// Default:- 
            /// Nullable:True 
            /// </summary>
            public string name { get; set; }

            /// <summary>
            /// Desc:学校ID 
            /// Default:- 
            /// Nullable:True 
            /// </summary>
            public int? sch_id { get; set; }

            /// <summary>
            /// Desc:- 
            /// Default:- 
            /// Nullable:True 
            /// </summary>
            public string sex { get; set; }

            /// <summary>
            /// Desc:- 
            /// Default:- 
            /// Nullable:True 
            /// </summary>
            public Boolean? isOk { get; set; }

            public string SchoolName { get; set; }

            public string AreaName { get; set; }

            public string SubjectName { get; set; }
        }
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using SqlSugar;

namespace NewTest.Demos
{
    //事务
    public class Tran : IDemos
    {

        public void Init()
        {
            Console.WriteLine("启动Tran.Init");
            using (SqlSugarClient db = SugarDao.GetInstance())//开启数据库连接
            {
                db.IsNoLock = true;//启用无锁查询
                db.CommandTimeOut = 30000;//设置超时时间
                try
                {
                    db.BeginTran();//开启事务
                    //db.BeginTran(IsolationLevel.ReadCommitted);+3重载可以设置事世隔离级别

                    db.CommitTran();//提交事务
                }
                catch (Exception)
                {
                    db.RollbackTran();//回滚事务
                    throw;
                }
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using SqlSugar;

namespace NewTest.Demos
{
    //流水号的功能
    public class SerialNumber : IDemos
    {

        public void Init()
        {
            Console.WriteLine("启动SerialNumber.Init");
            using (SqlSugarClient db = SugarFactory.GetInstance())//开启数据库连接
            {
                var dientityValue = db.Insert<Student>(new Student() {   });
                var name = db.Queryable<Student>().Single(it => it.id == dientityValue.ObjToInt()).name;
                Console.WriteLine(name);

                var dientityValue2 = db.Insert<School>(new School() { });
                var name2 = db.Queryable<School>().Single(it => it.id == dientityValue2.ObjToInt()).name;
                Console.WriteLine(name2); ;
            }
        }

        /// <summary>
        /// 全局配置类
        /// </summary>
        public class SugarConfigs
        {
            public static List<PubModel.SerialNumber> NumList = new List<PubModel.SerialNumber>(){
              new PubModel.SerialNumber(){TableName="Student", FieldName="name", GetNumFunc=()=>{ //GetNumFunc在没有事中使用
                  return "stud-"+DateTime.Now.ToString("yyyy-MM-dd");
              }},
                new PubModel.SerialNumber(){TableName="School", FieldName="name",  GetNumFuncWithDb=db=>{ //事务中请使用GetNumFuncWithDb保证同一个DB对象,不然会出现死锁
                  return "ch-"+DateTime.Now.ToString("syyyy-MM-dd");
              }}
            };
        }

        /// <summary>
        /// SqlSugar实例工厂
        /// </summary>
        public class SugarFactory
        {

            //禁止实例化
            private SugarFactory()
            {

            }
            public static SqlSugarClient GetInstance()
            {
                string connection = SugarDao.ConnectionString; //这里可以动态根据cookies或session实现多库切换
                var db = new SqlSugarClient(connection);
                db.SetSerialNumber(SugarConfigs.NumList);//设置流水号
                return db;
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using SqlSugar;
using System.Configuration;
using System.Data;
using System.Threading.Tasks;
using System.Transactions;
using System.Threading;

namespace WebTest.Demo
{
    /// <summary>
    /// /*******************************************************************分布式计算 demo**************************************************************/
    /// </summary>
    public partial class Cloud : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            var id = Guid.Parse("4FC950EC-7C23-480F-9545-443EBDCA32E9");
            int pageCount = 0;

            using (CloudClient db = CloudDao.GetInstance())
            {
                db.PageMaxHandleNumber = 1500;
                using (CommittableTransaction trans = new CommittableTransaction())//启用分布式事务
                {


                    db.Tran = trans;

                    /*** 增、删、改 ***/

                    //根据配置的百分比，随机插入到某个节点库
                    var s = new student()
                    {
                        createTime = DateTime.Now,
                        id = Guid.NewGuid(),
                        name = Guid.NewGuid() + ""
                    };
                    //db.Insert<student>(s, false/*false表示不是自增列*/); //数据库设计主键为GUID为佳多库计算不会冲突



                    ////并发请求所有节点找出这条数据更新
                    //s.name = "改11";
                    //db.Update<student>(s, it => it.id == s.id);//根据表达示更新


                    //db.Update<student, Guid>(s, s.id);//根据主键更新

                    //db.Update<student, Guid>(s, new Guid[] { s.id });//根据主键数组更新



                    ////并发请求所有节点找出这条数据删除
                    //db.Delete<student>(it => it.id == s.id);


                    trans.Commit();
                }

                db.TranDispose();


                /*** 使用Taskable实现云计算 ***/


                //多线程请求所有数据库节点，获取汇总结果
                var taskDataTable = db.Taskable<DataTable>("SELECT max(NUM) FROM STUDENT").Tasks;
                foreach (var dr in taskDataTable)//遍历所有节点数据
                {
                    var dt = dr.Result.DataTable;//每个节点的数据 类型为DataTable
                    var connectionName = dr.Result.ConnectionString;
                }

                //多线程请求所有数据库节点，获取汇总结果
                var taskInt = db.Taskable<int>("SELECT max(NUM) FROM STUDENT").Tasks;
                foreach (var dr in taskInt)//遍历所有节点数据
                {
                    var dt = dr.Result.Value;//获取单个值
                    var connectionName = dr.Result.ConnectionString;
                }

                //多线程请求所有数据库节点，获取汇总结果
                var taskEntity = db.Taskable<student>("SELECT top 100 * FROM STUDENT").Tasks;
                foreach (var dr in taskEntity)//遍历所有节点数据
                {
                    var dt = dr.Result.Entities;//获取实体集合
                    var connectionName = dr.Result.ConnectionString;
                }

                // //Taskable实现分组查询
                // var groupList = db.Taskable<DataTable>("SELECT name,COUNT(*) AS [count],AVG(num) as num FROM STUDENT WHERE ID IS NOT NULL  GROUP BY NAME ")
                //     .Tasks
                //     .SelectMany(it => it.Result.DataTable.AsEnumerable())
                //     .Select(dr => new { num = Convert.ToInt32(dr["NUM"]), name = dr["NAME"].ToString(), count = Convert.ToInt32(dr["COUNT"]) })
                //     .GroupBy(dr => dr.name).Select(dt => new { name = dt.First().name, count = dt.Sum(dtItem => dtItem.count), num = dt.Sum(dtItem => dtItem.num) / dt.Sum(dtItem => dtItem.count) }).ToList();


                // //输出结果
                // foreach (var it in groupList)
                // {
                //     var num = it.num;
                //     var name = it.name;
                //     var count = it.count;
                // }


                // //简化
                // var groupList2 = db.Taskable<DataTable>("SELECT NAME,COUNT(*) AS [COUNT],AVG(NUM) as NUM FROM STUDENT WHERE ID IS NOT NULL  GROUP BY NAME ")
                //.MergeTable()//将结果集合并到一个集合
                //.Select(dr => new { num = Convert.ToInt32(dr["NUM"]), name = dr["NAME"].ToString(), count = Convert.ToInt32(dr["COUNT"]) })
                //.GroupBy(dr => dr.name).Select(dt => new { name = dt.First().name, count = dt.Sum(dtItem => dtItem.count), num = dt.Sum(dtItem => dtItem.num) / dt.Sum(dtItem => dtItem.count) }).ToList();

                // //再简化
                // List<V_Student> groupList3 = db.Taskable<V_Student>("SELECT name,COUNT(*) AS [count],AVG(num) as num FROM STUDENT WHERE ID IS NOT NULL  GROUP BY NAME ")
                //.MergeEntities()//将结果集合并到一个集合
                //.GroupBy(dr => dr.name).Select(dt => new V_Student { name = dt.First().name, count = dt.Sum(dtItem => dtItem.count), num = dt.Sum(dtItem => dtItem.num) / dt.Sum(dtItem => dtItem.count) }).ToList();



                //更多简化函数
                int maxValue = db.Taskable<int>("SELECT max(NUM) FROM STUDENT").Max();//求出所有节点的最大值
                int minValue = db.Taskable<int>("SELECT min(NUM) FROM STUDENT").Min();//求出所有节点的最小值
                var dataCount = db.Taskable<int>("SELECT count(1) FROM STUDENT").Count();//求出所有节点数据
                // var avg = db.TaskableWithCount<int>("SELECT avg(num)", " FROM STUDENT").Avg();
                var all = db.Taskable<student>("select * from student where Contains(name,@name)"/*使用contains需要建全文索引*/, new { name = "张三" }).ToList();//获取所有节点name为张三的数据,转为list

                var dnSingle = DateTime.Now;
                var data = db.Taskable<student>("select * from student where id=@id", new { id = id }).ToSingle();//从所有节点中查询一条记录
                var timeSingle = (DateTime.Now - dnSingle).TotalSeconds;

                var dn = DateTime.Now;
                //单列排序
                //  var list = db.TaskableWithPage<student>("id", "select * from student    "/*使用contains需要建全文索引*/, 2160, 25, ref pageCount, "num", OrderByType.desc, new { name = "\"*李*\"" });
                var time = (DateTime.Now - dn).TotalSeconds;

                //多组排序 order by num,time
                var dn2 = DateTime.Now;
                var listMultipleOrderBy = db.TaskableWithPage<student>("id", "select * from student   "/*使用contains需要建全文索引*/, 5000, 25, ref pageCount, new List<OrderByDictionary>() { 
                     new   OrderByDictionary(){ OrderByField="num", OrderByType=OrderByType.asc},
                     //       new   OrderByDictionary(){ OrderByField="createTime", OrderByType=OrderByType.desc},
                   //  new OrderByDictionary(){ OrderByField="createTime", OrderByType=OrderByType.asc}
                }, new { name = "\"*小*\"" });
                var time2 = (DateTime.Now - dn2).TotalSeconds;


            }
        }
        /// <summary>
        /// 测试类
        /// </summary>
        public class student
        {
            public Guid id { get; set; }
            public string name { get; set; }
            public DateTime createTime { get; set; }
            public int num { get; set; }
        }
        /// <summary>
        /// 获取数据库连接对象
        /// </summary>
        public class CloudDao
        {
            private CloudDao() { }
            public static CloudClient GetInstance()
            {
                return new CloudClient(new List<CloudConnectionConfig>() { 
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c1"].ToString(), Rate=1},
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c2"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c3"].ToString(), Rate=1},
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c4"].ToString(), Rate=1},
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c5"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c6"].ToString(), Rate=1},
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c7"].ToString(), Rate=1},
                 new CloudConnectionConfig(){  ConnectionString=ConfigurationManager.ConnectionStrings["c8"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c9"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c10"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c15"].ToString(), Rate=1},
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c16"].ToString(), Rate=1},              
                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["c17"].ToString(), Rate=1},
                //new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["cy1"].ToString(), Rate=1},
                //   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["cy2"].ToString(), Rate=1},
                //    new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["cy3"].ToString(), Rate=1},
                //                      new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["zq1"].ToString(), Rate=1},
                //   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["zq2"].ToString(), Rate=1},
                //    new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["zq3"].ToString(), Rate=1},
                //            new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["qp1"].ToString(), Rate=1},
                //   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["qp2"].ToString(), Rate=1},
                //    new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["qp3"].ToString(), Rate=1},
                //                 new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wy1"].ToString(), Rate=1},
                //   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wy2"].ToString(), Rate=1},
                //    new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wy3"].ToString(), Rate=1},
                //                                   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wwf1"].ToString(), Rate=1},
                //   new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wwf2"].ToString(), Rate=1},
                //    new CloudConnectionConfig(){ ConnectionString=ConfigurationManager.ConnectionStrings["wwf3"].ToString(), Rate=1},


            });
            }
        }
    }
}