一般处理程序+html 的CRUD

using Console_Core.BLL;
using Console_Core.Common;
using Console_Core.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Web_Cassini.Day3
{
    /// <summary>
    /// studenteidt 的摘要说明
    /// </summary>
    public class studenteidt : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/html";
            string save = context.Request["save"];
            string action = context.Request["action"];
            string html = CommonHelper.GetHtmlFromVirtualPath(context, "~/Day3/studentedit.html");
            MyORM_BLL myORM_BLL = new MyORM_BLL();

            #region 展示
            if (string.IsNullOrWhiteSpace(save)) //展示
            {
                if (action == "addnew")
                {
                    html = html.Replace("@actionName", "新增").Replace("@action", "addnew").Replace("@ID", "").Replace("@USERNAME", "")
                        .Replace("@PASSWORD", "").Replace("@AGE", "").Replace("{ISRICH}", "").Replace("@PROFESSION", "")
                        .Replace("{male}", "checked").Replace("{female}", "").Replace("{both}", "");
                    context.Response.Write(html);
                }
                else if (action == "edit")
                {
                    //获得id 根据id查询 验证格式
                    int id = Convert.ToInt32(context.Request["id"]);
                    TC_STUDENT tc = (TC_STUDENT)myORM_BLL.SelectModelById(typeof(TC_STUDENT), id);
                    //替换html
                    html = html.Replace("@actionName", "编辑" + tc.USERNAME).Replace("@action", "edit").Replace("@ID", tc.ID.ToString()).Replace("@USERNAME", tc.USERNAME)
                        .Replace("@PASSWORD", tc.PASSWORD).Replace("@AGE", tc.AGE.ToString()).Replace("{ISRICH}", "checked").Replace("@PROFESSION", tc.PROFESSION);
                    if (tc.GENDER == 1)
                    {
                        html = html.Replace("{male}", "checked").Replace("{female}", "").Replace("{both}", "");
                    }
                    else if (tc.GENDER == 2)
                    {
                        html = html.Replace("{male}", "").Replace("{female}", "checked").Replace("{both}", "");
                    }
                    else if (tc.GENDER == 3)
                    {
                        html = html.Replace("{male}", "").Replace("{female}", "").Replace("{both}", "checked");
                    }
                    else
                    {
                        CommonHelper.OutputError(context, "~/Day3/error.html", "500 INTERNET SERVER ERROR THIS GENDER:" + tc.GENDER);
                        return;
                    }
                    //输出
                    context.Response.Write(html);
                }
                else
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "404 NOT FOUND THIS ACTION:" + action);
                }
            } 
            #endregion

            #region 保存
            else if (save == "保存") //保存
            {
                string USERNAME = context.Request["USERNAME"];
                string PROFESSION = context.Request["PROFESSION"];
                string PASSWORD = context.Request["PASSWORD"];
                string ISRICH = context.Request["ISRICH"];
                string GENDER = context.Request["GENDER"];
                string AGE = context.Request["AGE"];
                #region 验证 非空、数字格式
                //验证 非空、数字格式
                if (string.IsNullOrWhiteSpace(USERNAME))
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 请填写用户名");
                    return;
                }
                if (string.IsNullOrWhiteSpace(PROFESSION))
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 请填写专业");
                    return;
                }
                if (string.IsNullOrWhiteSpace(PASSWORD))
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 请填写密码");
                    return;
                }
                if (string.IsNullOrWhiteSpace(AGE))
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 请填写年龄");
                    return;
                }
                int age;
                if (!int.TryParse(AGE, out age)) //转换不成功
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 AGE必须是数字:" + AGE);
                    return;
                } 
                #endregion
                //实例共同项
                TC_STUDENT tc = new TC_STUDENT();
                tc.USERNAME = USERNAME;
                tc.PROFESSION = PROFESSION;
                tc.PASSWORD = PASSWORD;
                tc.ISRICH = ISRICH == "on" ? 1 : 2;
                tc.GENDER = Convert.ToInt32(context.Request["GENDER"]);
                tc.AGE = age;
                bool flag = false;
                if (action == "addnew")
                {
                    flag = myORM_BLL.InsertModel(tc, "SE_TC_STUDENT");
                }
                else if (action == "edit")
                {
                    tc.ID = Convert.ToInt32(context.Request["ID"]);
                    flag = myORM_BLL.UpdateModel(tc);
                }
                else
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "404 NOT FOUND THIS ACTION:" + action);
                }
                if (!flag) //新增或更新失败
                {
                    CommonHelper.OutputError(context, "~/Day3/error.html", "500 INSERT OR UPDATE 失败");
                    return;
                }
                context.Response.Redirect("studentlist.ashx");
            } 
            #endregion

            else
            {
                CommonHelper.OutputError(context, "~/Day3/error.html", "404 NOT FOUND THIS SAVE:" + save);
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}