asp.net 超简易货物管理系统(含滑动验证)

【实例截图】

【核心代码】

using GoodsProject.DAL;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Bowin.Common.Linq;
using Bowin.Common.Linq.Sql;
using GoodsProject.Model;

namespace GoodsProject.Handler
{
    /// <summary>
    /// UserHandler 的摘要说明
    /// </summary>
    public class UserHandler : IHttpHandler
    {

        UserDAL dal = new UserDAL();
        LogDAL Errordal = new LogDAL();
        CommodityDBDataContext db = new CommodityDBDataContext();
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            var action = context.Request["action"];
            switch (action)
            {
                case "list":
                    int count = 0;
                    var page = int.Parse(context.Request["page"]);
                    var rows = int.Parse(context.Request["rows"]);
                    var data = dal.GetUserList(page, rows, out count);
                    string result = data.ToJson();
                    string returnJson = "{\"total\":"   count.ToString()   ",\"rows\":"   result   "}";
                    context.Response.Write(returnJson);
                    break;
                case "sele":
                    context.Response.Write(GetUserInfo(context));
                    break;
                case "add":
                    context.Response.Write(AddInfo(context));
                    break;
                case "del":
                    context.Response.Write(Removelist(context));
                    break;
                case "pass":
                    context.Response.Write(UpdatePass(context));
                    break;
                case "login":
                    context.Response.Write(Login(context));
                    break;
                    
                default:
                    break;
            }
        }
        #region 查找用户
        public string GetUserInfo(HttpContext context)
        {
            string ID = context.Request["ID"];
           
            var sql = from n in db.TB_User.Where(w => w.ID == ID).OrderBy(o => o.CreateDate)
                    select new UserInfo
                    {
                        ID = n.ID,
                        UserName = n.UserName,
                        LoginName = n.LoginName,
                        PassWord = n.PassWord,
                        Remarks = n.Remarks,
                        IsShow = n.IsShow,
                        CreateDate = n.CreateDate
                    };

            return sql.ToJson();
        }
        #endregion

        #region 添加用户
        public string AddInfo(HttpContext context)
        {
            string Msg = "";
            string ID = context.Request["ID"];
            string UserName = context.Request["UserName"];
            string LoginName = context.Request["LoginName"];
            string PassWord = context.Request["PassWord"];
            string Remarks = context.Request["Remarks"];
            try
            {
                if (ID == "")
                {
                    var red = db.TB_User.Where(w => w.LoginName == LoginName.Trim()).FirstOrDefault();
                    if (red != null)
                    {
                        Msg = "操作失败！该登录账号已经存在！";
                    }
                    else
                    {
                        TB_User info = new TB_User();
                        info.ID = Function.GetID();
                        info.UserName = UserName;
                        info.LoginName = LoginName;
                        info.PassWord = PassWord;
                        info.IsShow = "T";
                        info.CreateDate = DateTime.Now;
                        info.Remarks = Remarks;

                        db._Insert(info);
                        db.SubmitChanges();
                    }
                }
                else
                {
                    var red = db.TB_User.Where(w => w.LoginName == LoginName.Trim() && w.ID != ID).FirstOrDefault();
                    if (red != null)
                    {
                        Msg = "操作失败！该登录账号已经存在！";
                    }
                    else
                    {
                        var r = db.TB_User.Where(w => w.ID == ID).FirstOrDefault();
                        if (r != null)
                        {
                            r.UserName = UserName;
                            r.LoginName = LoginName;
                            r.Remarks = Remarks;
                            db.SubmitChanges();
                        }
                    }
                }
            }
            catch (Exception e)
            {
                Msg = "操作异常，查看错误日志！";
                Errordal.SetErrorLog("[用户]"   e.Message);
            }
            return Msg;
        }
        #endregion

        #region 删除用户
        public string Removelist(HttpContext context)
        {
            string Msg = "";
            try
            {
                string ID = context.Request["ids"];
                string[] ListID = ID.Split(',');
                foreach (var item in ListID)
                {
                    var r = db.TB_User.Where(w => w.ID == item).FirstOrDefault();
                    if (r != null)
                    {
                        db.TB_User.DeleteOnSubmit(r);
                        db.SubmitChanges();
                    }
                }
            }
            catch (Exception e)
            {
                Msg = "操作异常，查看错误日志！";
                Errordal.SetErrorLog(e.Message);
            }
            return Msg;
        }
        #endregion

        #region 修改密码
        public string UpdatePass(HttpContext context) 
        {
            string Msg = "";
            string ID = context.Request["ID"];
            string PassWord = context.Request["PassWord"];
            try
            {
                var r = db.TB_User.Where(w => w.ID == ID).FirstOrDefault();
                if (r != null)
                {
                    r.PassWord = PassWord;
                    db.SubmitChanges();
                }
            }
            catch (Exception ex)
            {
                Msg = "密码修改失败！";
                Errordal.SetErrorLog("[密码修改失败]："  ex.Message);
            }
            return Msg;
        }
        #endregion

        #region 登录判断
        public string Login(HttpContext context) 
        {
            string ret = "";
            string LoginName = context.Request["userName"];
            string password = context.Request["password"];
            var red = db.TB_User.Where(w => w.LoginName == LoginName && w.PassWord == password && w.IsShow == "T").FirstOrDefault();
            if (red != null)
            {
                ret = "{\"LoginName\":\""   red.UserName   "\",\"LoginUser\":\""   red.LoginName   "\"}";
            }
            else 
            {
                ret = "false";
            }
            return ret;
        }
        #endregion

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