How to get perfect Result within same table and result without duplicate record when searching via LINQ MVC

Dear all expert,

I am a new  LINQ trainer and  trying to join 1 table in a query with Linq to get data from all combine 3 tables but unlucky getting a unique result on MVC web  . I getting mistake in my coding  for Controller , View and model part in MVC. Please help me on this issue and would be greatly appreciated. Thank You .

Below is My SQL query result:

<div> SELECT a.[Admin_Id] ,a.[Admin_Name], a.[Admin_Status],a.[Admin_Remarks]</div> <div>             ,a.[Admin_CreateBy] ,a2.[Admin_Name],a.[Admin_UpdateBy],a1.Admin_Name</div> <div>           FROM [ABC].[dbo].[Admin]a </div> <div>            join [ABC].[dbo].[Admin]a1 on a.[Admin_UpdateBy] = a1.Admin_Id</div> <div>            join [ABC].[dbo].[Admin]a2 on  a.[Admin_CreateBy] = a2.Admin_Id</div> <div> where a.[Admin_Name] like '%l%' or a.[Admin_Remarks] like '%l%'</div> <div> or a1.[Admin_Name] like '%l%' or a2.[Admin_Name] like '%l%'</div> <div></div> <div>SQL Result : </div> <div>

</div>

Now, i am getting unique result from Web that Create By and Update By Column is null value and sometime will get duplicate record when searching by name . example : "a"

Here Coding in Model Part:

using ABC.Edmx;using PagedList;using System.Collections.Generic;namespace ABC{    public class EntityWM    {           //Get A row DB        public Status status { get; set; }        public Admin AdminModel { get; set; }  // a row from db               // get whole list DB        public List<Status> statusList { get; set; }        public AdminModelList { get; set; }                 // pager list        public IPagedList<Admin> AdminPageList { get; set; }          }}

Coding in Controller :

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Net;
using System.Web.Mvc;
using ABC.Edmx;
using ABC.Models;
using PagedList;
namespace ABC.Controllers
{
    public class AdminController : Controller
    {
        private ABCEntities _edmx = new ABCEntities();

        // GET: Admin
        [HttpGet]
        public ActionResult Index(string sortOrder, string currentFilter, string searchString, int? page)

        {
           
            EntityWM _Rmodel = null;
            _Rmodel = new EntityWM();
            
           
            _Rmodel.AdminModelList = _edmx.Admins.ToList().Select(p => new Admin
            {
                Admin_Id = p.Admin_Id,
                Admin_Name = p.Admin_Name,
                Admin_Status = p.Admin_Status,
                Admin_Remarks = p.Admin_Remarks,
                Admin_CreateBy = p.Admin_CreateBy,
                Admin_CreateDate = p.Admin_CreateDate,
                Admin_UpdateBy = p.Admin_UpdateBy,
                Admin_UpdateDate = p.Admin_UpdateDate

            }).ToList();

            _Rmodel.statusList = _edmx.Status.ToList().Select(p => new Status
            {
                Status_Id = p.Status_Id,
                Status_Desc = p.Status_Desc
            }).ToList();
            if (searchString != null)
            {
                page = 1;
            }
            else
            {
                searchString = currentFilter;
            }

            ViewBag.CurrentFilter = searchString;

            /*
            SELECT a.[Admin_Id] ,a.[Admin_Name] ,a.[Admin_Password],a.[Admin_Status],a.[Admin_Remarks]
             ,a.[Admin_CreateBy] ,a.[Admin_CreateDate],a2.[Admin_Name],a.[Admin_UpdateBy],a1.Admin_Name
             ,a.[Admin_UpdateDate]
            FROM [OnlineTest_DEV2].[dbo].[Admin]a
            join [OnlineTest_DEV2].[dbo].[Admin]a1 on a.[Admin_UpdateBy] = a1.Admin_Id 
            join [OnlineTest_DEV2].[dbo].[Admin]a2 on  a.[Admin_CreateBy] = a2.Admin_Id
            */

            if (!String.IsNullOrEmpty(searchString))

            {
                _Rmodel.AdminModelList = (from s in _Rmodel.AdminModelList
                                          join a in _Rmodel.AdminModelList on s.Admin_CreateBy equals a.Admin_Id into AdminTable1
                                          from a in AdminTable1.ToList()
                                          join a1 in _Rmodel.AdminModelList on s.Admin_UpdateBy equals a1.Admin_Id into AdminTable2
                                          from a1 in AdminTable2.ToList()
                                          where s.Admin_Name?.ToLower().Contains(searchString.ToLower()) == true
               || s.Admin_Remarks?.ToLower().Contains(searchString.ToLower()) == true ||
               a.Admin_Name?.ToLower().Contains(searchString.ToLower()) == true
               || a1.Admin_Name?.ToLower().Contains(searchString.ToLower()) == true
                                          select new Admin
                                          {
                                              Admin_Id = s.Admin_Id,
                                              Admin_Name = s.Admin_Name,
                                              Admin_Status = s.Admin_Status,
                                              Admin_Remarks = s.Admin_Remarks,
                                              Admin_CreateDate = s.Admin_CreateDate,
                                              Admin_UpdateDate = s.Admin_UpdateDate,
                                              Admin_CreateBy = s.Admin_CreateBy,
                                              Admin_UpdateBy = s.Admin_UpdateBy
                                              //Admin_UpdateBy = a1.Admin_Id,
                                              //Admin_CreateBy = a.Admin_Id

                                          }).ToList();
            }

            int pageSize = 5;
            int pageNumber = (page ?? 1);

            _Rmodel.AdminPageList = _Rmodel.AdminModelList.ToPagedList(pageNumber, pageSize);

            return View(_Rmodel);
        }

-------------------------------------------------------------------------------------------------------

Coding in csthml:

@model ABC.Models.EntityWM

@using PagedList.Mvc;
<link href="~/Content/PagedList.css" rel="stylesheet" type="text/css" /><h2>Admin Index</h2>

@using (Html.BeginForm("Index", "Admin", FormMethod.Get))
{<p>
        @Html.TextBox("searchString", ViewBag.CurrentFilter as string, new { @placeholder = "Search..." })<button type="submit" class="btn btn-success"><span class="glyphicon glyphicon-search"></span></button><a class="btn btn-success pull-right" data-modal="" onclick="@("window.location.href='" + @Url.Action("Create", "Admin") + "'")" id="btnCreate"><span class="glyphicon glyphicon-plus"></span></a></p>

}

<table class="table"><tr><th>
            @Html.ActionLink(Model.ResourcesModel.FirstOrDefault(x => x.Resources_Name == "Name").Resources_Value, "Index", new { sortOrder = ViewBag.NameSortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink(Model.ResourcesModel.FirstOrDefault(x => x.Resources_Name == "Status").Resources_Value, "Index", new { sortOrder = ViewBag.StatusSortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink("Remarks", "Index", new { sortOrder = ViewBag.RemarksSortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink("Create By", "Index", new { sortOrder = ViewBag.CreateBySortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink("Create Date", "Index", new { sortOrder = ViewBag.CreateDateSortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink("Update By", "Index", new { sortOrder = ViewBag.UpdateBySortParm, currentFilter = ViewBag.CurrentFilter })</th><th>
            @Html.ActionLink("Update Date", "Index", new { sortOrder = ViewBag.UpdateDateSortParm, currentFilter = ViewBag.CurrentFilter })</th><th></th></tr>

    @foreach (var item in Model.AdminPageList)

    {
        <tr><td>
                @Html.DisplayFor(modelItem => item.Admin_Name)</td><td>
                @Html.DisplayFor(modelItem => Model.statusList.FirstOrDefault(x => x.Status_Id == item.Admin_Status).Status_Desc)</td><td>
                    @Html.DisplayFor(modelItem => item.Admin_Remarks)</td><td>
                    @Html.DisplayFor(modelItem => Model.AdminModelList.Where(x => x.Admin_Id == item.Admin_CreateBy).FirstOrDefault().Admin_Name)</td><td>
                    @Html.DisplayFor(modelItem => item.Admin_CreateDate)</td><td>
                    @Html.DisplayFor(modelItem => Model.AdminModelList.Where(x => x.Admin_Id == item.Admin_UpdateBy).FirstOrDefault().Admin_Name)</td><td>
                    @Html.DisplayFor(modelItem => item.Admin_UpdateDate)</td><td>
                    @Html.ActionLink(" ", "Edit", new { id = item.Admin_Id }, new { @class = "glyphicon glyphicon-edit" })
                    @Html.ActionLink(" ", "Details", new { id = item.Admin_Id }, new { @class = "glyphicon glyphicon-th-list" })
                    @Html.ActionLink(" ", "Delete", new { id = item.Admin_Id }, new { @class = "glyphicon glyphicon-trash" })</td></tr>
    }</table><br />
Page @( Model.AdminPageList.PageCount < Model.AdminPageList.PageNumber ? 0 : Model.AdminPageList.PageNumber) of @Model.AdminPageList.PageCount

@Html.PagedListPager(Model.AdminPageList, page => Url.Action("Index",
    new { page, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter }))