SunSonic 3.0 ORM开源框架的学习

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using SubSonic.Linq.Structure;
using SubSonic.Query;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Solution.DataAccess.DataModel;

namespace SubSonicTest
{
    public partial class Test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
           
            //新增记录
            var branch1 = new Branch
            {
                DeptCode = SPs.P_Branch_GetMaxBranchDeptCode(2, 1).ExecuteScalar() + "",
                Name = "网络部",
                Comment = "网络问题解决中心",
                ParentId = 1,
                Sort = 8,
                Depth = 2
            };
            

            //保存至数据库
            branch1.Save();
            //打印出来S
            PrintImpInfo("记录添加成功,新增Id="+branch1.Id);

            //查询刚刚添加的记录并修改
            var branchModel = Branch.SingleOrDefault(x => x.Comment == "网络问题解决中心");
            branchModel.Name = "售后服务部";
            branchModel.Save();

            
            //删除刚才添加的记录
            Branch.Delete(x => x.Comment == "网络问题解决中心");
            if (Branch.Exists(x => x.Comment == "网络问题解决中心"))
            {
                PrintImpInfo("存在");
            }
            else
            {
                PrintImpInfo("不存在");
            }
            
            //查询Branch下所有的数据
            var list = Branch.All();
            foreach (var branch in list)
            {
                PrintImpInfo(string.Format("名字={0},评论={1},添加日期={2}", branch.Name, branch.Comment, branch.AddDate.ToString("yyyy-MM-dd HH:mm:ss")));
            }
             
            // //使用类实体附带的函数查询
            PrintImpInfo("使用类实体附带的函数查询");
            var braanchList = Branch.Find(x => x.Id > 0);
            foreach (var branch in braanchList)
            {
                PrintImpInfo(branch.Id.ToString());
                PrintImpInfo(branch.Name);
                PrintImpInfo(branch.AddDate.ToString("yyyy-MM-dd HH:mm:ss"));
            }
            PrintImpInfo("------------------------");

            //分页功能，获取第2页记录（每页5条记录）
            PrintImpInfo("获取第2页记录（每页5条记录");
            var il = Branch.GetPaged("Id Desc", 2, 4);
            foreach (var branch in il)
            {
                PrintImpInfo(branch.Id.ToString());
                PrintImpInfo(branch.Name);
                PrintImpInfo(branch.Sort.ToString());
                PrintImpInfo(branch.Depth.ToString());
                PrintImpInfo(branch.ParentId.ToString());
                PrintImpInfo(branch.AddDate.ToString("yyyy-MM-dd HH:mm:ss"));
            }
            PrintImpInfo("------------------------");

            //使用数据库名+DB可以直接调用聚合函数
            PrintImpInfo("数据库名+DB可以直接调用聚合函数");
            var db = new SubSonicTestDB();
            //平均值
            PrintImpInfo("平均值"+db.Avg<Position>(x=>x.Id).Where<Position>(x=>x.Id<12).ExecuteScalar()+" ");
            //计算数量
            PrintImpInfo("计算数量" + db.Count<Position>(x => x.Id).ExecuteScalar() + " ");
            //计算合计量
            PrintImpInfo("计算合计量" + db.Sum<Position>(x => x.Id).ExecuteScalar() + " ");
            //最大值
            PrintImpInfo("最大值" + db.Max<Position>(x => x.Id).ExecuteScalar() + " ");
            //最小值
            PrintImpInfo("最小值" + db.Min<Position>(x => x.Id).ExecuteScalar() + " ");

            //存储过程调用方法
            var obj = SPs.P_Branch_GetMaxBranchDeptCode(1,0).ExecuteScalar();
            PrintImpInfo("存储过程调用obj="+obj);

            //Linq查询方式
            PrintImpInfo("Linq查询方式");
            var query = new Query<Branch>(db.provider);
            var posts = from p in query
                where p.DeptCode.StartsWith("0101")
                select p;
            foreach (var branch in posts)
            {
                PrintImpInfo(branch.ToString());
            }

            query = db.GetQuery<Branch>();
            posts = from p in query
                where p.Id > 3 && p.Id < 6
                select p;
            foreach (var branch in posts)
            {
                PrintImpInfo(branch.ToString());
            }

            var newBranchList = query.ToList<Branch>();
            foreach (var branch in newBranchList)
            {
                PrintImpInfo(branch.ToString());
            }


            //Linq多表关联查询方式
            PrintImpInfo("Linq多表关联查询方式");
            var query1 = from b in Position.All()
                join p in Branch.All() on b.Branch_Id equals p.Id
                where p.DeptCode == "0101"
                select p;
            foreach (var branch in query1)
            {
                PrintImpInfo(branch.ToString());
            }

            


        }
        /// <summary>
        /// 在Debug模式下打印信息到输出窗口中
        /// </summary>
        /// <param name="info"></param>
        private void PrintImpInfo(string info)
        {
            System.Diagnostics.Debug.WriteLine(info);

        }
       
    }
}