Pagination Umbraco

_Pager.cshtml

@model OurUmbraco.ViewModels.Pager
@{
    var IsBreak = false;
    var querystring = Model.QueryString;
}
@if (Model.TotalPages > 1)
{
    <div class="pagination">
        @if (Model.CurrentPage > 1)
        {
            querystring.Set("p", (Model.CurrentPage - 1).ToString());
            <a class="prev page-numbers" href="?@querystring.ToString()"><i class="fa fa-angle-left"></i>Anterior</a>
        }

        @for (int p = 1; p < Model.TotalPages + 1; p++)
        {
            querystring.Set("p", p.ToString());

            var linkClass = (p == Model.CurrentPage) ? "" : "current";
            if (p == Model.CurrentPage)
            {
                <a class="page-numbers @Html.Raw(linkClass)" href="?@querystring.ToString()">@p</a>
                IsBreak = false;
            }
            else
            {
                if (p == 1
                    || p == Model.CurrentPage - 1
                    || p == Model.CurrentPage + 1
                    || p == Model.TotalPages - 1
                    || p == Model.TotalPages)
                {
                    querystring.Set("p", p.ToString());
                    <a class="page-numbers @Html.Raw(linkClass)" href="?@querystring.ToString()">@p</a>
                    IsBreak = false;
                }
                else
                {
                    if (IsBreak)
                    {
                        continue;
                    }
                    else
                    {
                        <a class="page-numbers dots" href="#">...</a>
                        IsBreak = true;
                    }
                }
            }
        }
        @if (Model.CurrentPage < Model.TotalPages)
        {
            querystring.Set("p", (Model.CurrentPage + 1).ToString());
            <a class="next page-numbers" href="?@querystring.ToString()">Próximo<i class="fa fa-angle-right"></i></a>
        }
    </div>
}  

Pager.cs

 using System.Collections.Specialized;
 namespace OurUmbraco.ViewModels
{
   public class Pager
      {
          public string Next { get; set; }
          public string Previous { get; set; }
          public int TotalPages { get; set; }
          public int CurrentPage { get; set; }
          public int PageSize { get; set; }
          public int Total { get; set; }
          public NameValueCollection QueryString { get; set; }
      }
  }

Template.cshtml

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@using OurUmbraco.ViewsModels
@{
    Layout = "Layout.cshtml";

    IEnumerable<IPublishedContent> items;
    
    var pager =  new Pager();

    pager.PageSize = 10;
    int page;

    //get querystring parameter page and filters
    pager.QueryString = HttpUtility.ParseQueryString(Request.QueryString.ToString());

    if (!int.TryParse(Request.QueryString["p"], out page))
    {
        pager.CurrentPage = 1;
    }

    pager.CurrentPage = page;
    
    items = Model.Content.DescendantsOrSelf("docType").Where(x => x.IsVisible()).OrderByDescending(x => x.CreateDate);
    pager.Total = items.Count();
    items = items.Skip((pager.CurrentPage - 1) * pager.PageSize).Take(pager.PageSize).ToList();

    pager.TotalPages = (int)Math.Ceiling((double)pager.Total / (double)pager.PageSize);

    
    if (pager.CurrentPage > pager.TotalPages)
    {
        pager.CurrentPage = pager.TotalPages;
    }
    else if (pager.CurrentPage < 1)
    {
        pager.CurrentPage = 1;
    }

}

@foreach (var item in items)
{
   //HTML Markup
}

@Html.Partial("_Pager", pager)