<button data-perm="true" data-controller="c" data-action="r" data-method="post" data-type="disable">Test 1</button>
<button data-perm="true" data-controller="c" data-action="t" data-method="post">Test 2</button>
<button data-perm="false" data-controller="c" data-action="r" data-method="post">Test 3</button>
<a data-perm="true" data-controller="c" data-action="m" data-method="post">Test 4</a>
<a data-perm="false" data-controller="c" data-action="m" data-method="post">Test 5</a>
<a data-perm="true" data-controller="c" data-action="t" data-method="post">Test 6</a>

    public class AuthorizePage: ActionFilterAttribute
    {
        private HtmlTextWriter _htmlTextWriter;
        private StringWriter _stringWriter;
        private StringBuilder _stringBuilder;
        private HttpWriter _output;
        IAuthorization _auth;
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {        
            _stringBuilder = new StringBuilder();
            _stringWriter = new StringWriter(_stringBuilder);
            _htmlTextWriter = new HtmlTextWriter(_stringWriter);
            _output = (HttpWriter) filterContext.RequestContext.HttpContext.Response.Output;
            filterContext.RequestContext.HttpContext.Response.Output = _htmlTextWriter;
            _auth = new Auth();
        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)
        {
            var response = _stringBuilder.ToString();

            response = AuthorizeTags(response);
            _output.Write(response);
        }

        public string AuthorizeTags(string response)
        {

            var doc = GetHtmlDocument(response);
            var nodes=doc.DocumentNode.SelectNodes("//*[@data-perm]");

            if (nodes == null)
                return response;

            foreach(var node in nodes)
            {
                var dataPermission = node.Attributes["data-perm"];
                if(!dataPermission.Value.TryBooleanParse())
                {
                    continue;
                }

                var controller = node.Attributes["data-controller"].Value;
                var action = node.Attributes["data-action"].Value;
                var method = node.Attributes["data-method"].Value;

                var access=_auth.Authorize(HttpContext.Current.User.Identity.Name , controller, action, method);

                if (access)
                    continue;

                var removeElm = true;
                var type = node.Attributes["data-type"]?.Value;
                if (type!=null && type.ToLower()== "disable")
                {
                    removeElm = false;
                }

                if(removeElm)
                {
                    node.Remove();
                    continue;
                }


                node.Attributes.Add("disabled", "true");
            }

            return doc.DocumentNode.OuterHtml;
        }

        private HtmlDocument GetHtmlDocument(string htmlContent)
        {
            var doc = new HtmlDocument
            {
                OptionOutputAsXml = true,
                OptionDefaultStreamEncoding = Encoding.UTF8
            };
            doc.LoadHtml(htmlContent);

            return doc;
        }

    }

  public interface IAuthorization
    {
        bool Authorize(string userId, string controller, string action, string method);
    }

private static readonly Regex RegexBetweenTags = new Regex(@">\s+<", RegexOptions.Compiled);
        private static readonly Regex RegexLineBreaks = new Regex(@"\r\s+", RegexOptions.Compiled);

        protected override void Render(HtmlTextWriter writer)
        {
            using (var htmlwriter = new HtmlTextWriter(new System.IO.StringWriter()))
            {
                base.Render(htmlwriter);
                var html = htmlwriter.InnerWriter.ToString();

                html = RegexBetweenTags.Replace(html, "> <");
                html = RegexLineBreaks.Replace(html, string.Empty);
                html = html.Replace("//<![CDATA[", "").Replace("//]]>", "");
                html = html.Replace("// <![CDATA[", "").Replace("// ]]>", "");

                writer.Write(html.Trim());
            }
        }

using System;
using System.IO;
using System.IO.Compression;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Mvc;

namespace PWS.Common.ActionFilters
{
    public class CompressAttribute : ActionFilterAttribute
    {
         #region Methods (2) 

        // Public Methods (1) 

        /// <summary>
        /// Called by the ASP.NET MVC framework before the action method executes.
        /// </summary>
        /// <param name="filterContext">The filter context.</param>
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            var response = filterContext.HttpContext.Response;
            if (IsGZipSupported(filterContext.HttpContext.Request))
            {
                String acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
                if (acceptEncoding.Contains("gzip"))
                {
                    response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
                    response.AppendHeader("Content-Encoding", "gzip");
                }
                else
                {
                    response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
                    response.AppendHeader("Content-Encoding", "deflate");
                }
            }
            // Allow proxy servers to cache encoded and unencoded versions separately
            response.AppendHeader("Vary", "Content-Encoding");
           //حذف فضاهای خالی





            response.Filter = new WhitespaceFilter(response.Filter);
        }
        // Private Methods (1) 

        /// <summary>
        /// Determines whether [is G zip supported] [the specified request].
        /// </summary>
        /// <param name="request">The request.</param>
        /// <returns></returns>
        private Boolean IsGZipSupported(HttpRequestBase request)
        {
            String acceptEncoding = request.Headers["Accept-Encoding"];

            if (acceptEncoding == null) return false;
            return !String.IsNullOrEmpty(acceptEncoding) && acceptEncoding.Contains("gzip") || acceptEncoding.Contains("deflate");
        }

#endregion Methods 
    }

    /// <summary>
    /// Whitespace Filter
    /// </summary>
    public class WhitespaceFilter : Stream
    {
#region Fields (3) 

        private readonly Stream _filter;
        /// <summary>
        /// 
        /// </summary>
        private static readonly Regex RegexAll = new Regex(@"\s+|\t\s+|\n\s+|\r\s+", RegexOptions.Compiled);
        /// <summary>
        /// 
        /// </summary>
        private static readonly Regex RegexTags = new Regex(@">\s+<", RegexOptions.Compiled);

#endregion Fields 

#region Constructors (1) 

        /// <summary>
        /// Initializes a new instance of the <see cref="WhitespaceFilter" /> class.
        /// </summary>
        /// <param name="filter">The filter.</param>
        public WhitespaceFilter(Stream filter)
        {
            _filter = filter;
        }

#endregion Constructors 

#region Properties (5) 

        //methods that need to be overridden from stream
        /// <summary>
        /// When overridden in a derived class, gets a value indicating whether the current stream supports reading.
        /// </summary>
        /// <returns>true if the stream supports reading; otherwise, false.</returns>
        public override bool CanRead
        {
            get { return true; }
        }

        /// <summary>
        /// When overridden in a derived class, gets a value indicating whether the current stream supports seeking.
        /// </summary>
        /// <returns>true if the stream supports seeking; otherwise, false.</returns>
        public override bool CanSeek
        {
            get { return true; }
        }

        /// <summary>
        /// When overridden in a derived class, gets a value indicating whether the current stream supports writing.
        /// </summary>
        /// <returns>true if the stream supports writing; otherwise, false.</returns>
        public override bool CanWrite
        {
            get { return true; }
        }

        /// <summary>
        /// When overridden in a derived class, gets the length in bytes of the stream.
        /// </summary>
        /// <returns>A long value representing the length of the stream in bytes.</returns>
        public override long Length
        {
            get { return 0; }
        }

        /// <summary>
        /// When overridden in a derived class, gets or sets the position within the current stream.
        /// </summary>
        /// <returns>The current position within the stream.</returns>
        public override long Position { get; set; }

#endregion Properties 

#region Methods (6) 

// Public Methods (6) 

        /// <summary>
        /// Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream. Instead of calling this method, ensure that the stream is properly disposed.
        /// </summary>
        public override void Close()
        {
            _filter.Close();
        }

        /// <summary>
        /// When overridden in a derived class, clears all buffers for this stream and causes any buffered data to be written to the underlying device.
        /// </summary>
        public override void Flush()
        {
            _filter.Flush();
        }

        /// <summary>
        /// When overridden in a derived class, reads a sequence of bytes from the current stream and advances the position within the stream by the number of bytes read.
        /// </summary>
        /// <param name="buffer">An array of bytes. When this method returns, the buffer contains the specified byte array with the values between <paramref name="offset" /> and (<paramref name="offset" /> + <paramref name="count" /> - 1) replaced by the bytes read from the current source.</param>
        /// <param name="offset">The zero-based byte offset in <paramref name="buffer" /> at which to begin storing the data read from the current stream.</param>
        /// <param name="count">The maximum number of bytes to be read from the current stream.</param>
        /// <returns>
        /// The total number of bytes read into the buffer. This can be less than the number of bytes requested if that many bytes are not currently available, or zero (0) if the end of the stream has been reached.
        /// </returns>
        public override int Read(byte[] buffer, int offset, int count)
        {
            return _filter.Read(buffer, offset, count);
        }

        /// <summary>
        /// When overridden in a derived class, sets the position within the current stream.
        /// </summary>
        /// <param name="offset">A byte offset relative to the <paramref name="origin" /> parameter.</param>
        /// <param name="origin">A value of type <see cref="T:System.IO.SeekOrigin" /> indicating the reference point used to obtain the new position.</param>
        /// <returns>
        /// The new position within the current stream.
        /// </returns>
        public override long Seek(long offset, SeekOrigin origin)
        {
            return _filter.Seek(offset, origin);
        }

        /// <summary>
        /// When overridden in a derived class, sets the length of the current stream.
        /// </summary>
        /// <param name="value">The desired length of the current stream in bytes.</param>
        public override void SetLength(long value)
        {
            _filter.SetLength(value);
        }

        /// <summary>
        /// When overridden in a derived class, writes a sequence of bytes to the current stream and advances the current position within this stream by the number of bytes written.
        /// </summary>
        /// <param name="buffer">An array of bytes. This method copies <paramref name="count" /> bytes from <paramref name="buffer" /> to the current stream.</param>
        /// <param name="offset">The zero-based byte offset in <paramref name="buffer" /> at which to begin copying bytes to the current stream.</param>
        /// <param name="count">The number of bytes to be written to the current stream.</param>
        public override void Write(byte[] buffer, int offset, int count)
        {
            string html = Encoding.Default.GetString(buffer);

            //remove whitespace
            html = RegexTags.Replace(html, "> <");
            html = RegexAll.Replace(html, " ");

            byte[] outdata = Encoding.Default.GetBytes(html);

            //write bytes to stream
            _filter.Write(outdata, 0, outdata.GetLength(0));
        }

#endregion Methods 
     }
}

GlobalFilters.Filters.Add(new CompressAttribute());

var update = Builders<Book>.Update.Set("LastStock", new DateTime().AddDays((-5)));
var filter = Builders<Book>.Filter.Lte("LastStock", new DateTime().AddDays(-10));
collection.UpdateManyAsync(filter, update);

var update = Builders<Book>.Update.Inc("Price", -30000);
var filter = Builders<Book>.Filter.Gt("Price", 200000);
collection.UpdateMany(filter, update);

var filter = Builders<Book>.Filter.Eq("Language.Name", "English");
collection.DeleteMany(filter);

Language.Name

var client = new MongoClient();
var db = client.GetDatabase("publisher");
db.DropCollection("books");

var client = new MongoClient();
client.DropDatabase("publisher");

var index = Builders<Book>.IndexKeys.Ascending("Year");
collection.Indexes.CreateOneAsync(index);

var index = Builders<Book>.IndexKeys.Ascending("Year").Descending("LastStock");
collection.Indexes.CreateOneAsync(index);

var index2 = Builders<Book>.IndexKeys.Geo2D("Location");
var index3 = Builders<Book>.IndexKeys.Geo2DSphere("Location");
var index4 = Builders<Book>.IndexKeys.GeoHaystack("Location");

var index5 = Builders<Book>.IndexKeys.Text("Content");

        /// <summary>
        /// (Syntactic Sugar) Checks if the given value is among a list of values or not.
        /// </summary>
        /// <remarks>
        /// This method is for syntactic sugar. What it actually does is to allow developers to wrtie a code like this
        /// <code>
        /// xVariable.IsIn(MyEnum.Value1,MyEnum.Value2)
        /// </code>
        /// Instead of these codes:
        /// <code>
        /// new []{ MyEnum.Value1, MyEnum.Value2 }.Contains(xVariable);
        /// </code>
        /// Or more commonly:
        /// <code>
        /// xVariable == MyEnum.Value1 || xVariable == MyEnum.Value2
        /// </code>
        /// </remarks>
        /// <typeparam name="T"></typeparam>
        /// <param name="source"></param>
        /// <param name="list"></param>
        /// <returns></returns>
        public static bool IsIn<T>(this T source, params T[] list)
        {
            Func<T, T, bool> compare = (v1, v2) => EqualityComparer<T>.Default.Equals(v1, v2);
            return list.Any(item => compare(item, source));
        }

/// <summary>
/// صفحه بندی کوئری
/// </summary>
/// <param name="query">کوئری مورد نظر شما</param>
/// <param name="pageNum">شماره صفحه</param>
/// <param name="pageSize">سایز صفحه</param>
/// <param name="orderByProperty">ترتیب خواص</param>
/// <param name="isAscendingOrder">اگر برابر با <c>true</c> باشد صعودی است</param>
/// <param name="rowsCount">تعداد کل ردیف ها</param>
/// <returns></returns>
private static IQueryable<T> PagedResult<T, TResult>(IQueryable<T> query, int pageNum, int pageSize,
                Expression<Func<T, TResult>> orderByProperty, bool isAscendingOrder, out int rowsCount)
{
    if (pageSize <= 0) pageSize = 20;
    
    //مجموع ردیف‌های به دست آمده
    rowsCount = query.Count();

// اگر شماره صفحه کوچکتر از 0 بود صفحه اول نشان داده شود
    if (rowsCount <= pageSize || pageNum <= 0) pageNum = 1;
    
// محاسبه ردیف هایی که نسبت به سایز صفحه باید از آنها گذشت
    int excludedRows = (pageNum - 1) * pageSize;

    query = isAscendingOrder ? query.OrderBy(orderByProperty) : query.OrderByDescending(orderByProperty);
    
// ردشدن از ردیف‌های اضافی و  دریافت ردیف‌های مورد نظر برای صفحه مربوطه
    return query.Skip(excludedRows).Take(pageSize);
}

var articles = (from article in Articles
                where article.Author == "Abc"
                select article);

int totalArticles;    

var firstPageData =  PagedResult(articles, 1, 20, article => article.PublishedDate, false, out totalArticles);

var context = new AtricleEntityModel(); 
var query = context.ArticlesPagedResult(articles, <pageNumber>, 20, article => article.PublishedDate, false, out totalArticles);