Click here to Skip to main content
13,091,920 members (60,923 online)
Click here to Skip to main content
Articles » Web Development » ASP.NET » General » Revisions
Add your own
alternative version

Tagged as


12 bookmarked
Posted 17 Aug 2013

Compress the viewstate Information

, 17 Aug 2013
Rate this:
Please Sign up or sign in to vote.
How to compress viewstate information of your aspx page
This is an old version of the currently published tip/trick.


This tip discusses how to compress the viewstate information of your aspx page if needed.

Using the Code

  1. Create the following Compressor class in your project.
  2. Override the two methods - LoadPageStateFromPersistenceMedium() and SavePageStateToPersistenceMedium(object viewState) in your cs file.
    // Create the following class file in your project which is used 
    // to compress and decompress the viewstate info  using System;
    using System.IO;
    using System.IO.Compression;
    public static class Compressor
        public static byte[] Compress(byte[] data)
            MemoryStream output = new MemoryStream();
            GZipStream gzip = new GZipStream(output,CompressionMode.Compress, true);
            gzip.Write(data, 0, data.Length);
            return output.ToArray();
        public static byte[] Decompress(byte[] data)
            MemoryStream input = new MemoryStream();
            input.Write(data, 0, data.Length);
            input.Position = 0;
            GZipStream gzip = new GZipStream(input,CompressionMode.Decompress, true);
            MemoryStream output = new MemoryStream();
            byte[] buff = new byte[64];
            int read = -1;
            read = gzip.Read(buff, 0, buff.Length);
            while (read > 0)
                output.Write(buff, 0, read);
                read = gzip.Read(buff, 0, buff.Length);
            return output.ToArray();
    }// Override the two Methods protected override object LoadPageStateFromPersistenceMedium()
            string viewState = Request.Form["__VSTATE"];
            byte[] bytes = Convert.FromBase64String(viewState);
            bytes = Compressor.Decompress(bytes);
            LosFormatter formatter = new LosFormatter();
            return formatter.Deserialize(Convert.ToBase64String(bytes));
        protected override void SavePageStateToPersistenceMedium(object viewState)
            LosFormatter formatter = new LosFormatter();
            StringWriter writer = new StringWriter();
            formatter.Serialize(writer, viewState);
            string viewStateString = writer.ToString();
            byte[] bytes = Convert.FromBase64String(viewStateString);
            bytes = Compressor.Compress(bytes);
            ScriptManager.RegisterHiddenField(updPnl, "__VSTATE", Convert.ToBase64String(bytes));


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Poonamchand Soni
Software Developer
India India
No Biography provided

You may also be interested in...

Comments and Discussions

Discussions on this specific version of this article. Add your comments on how to improve this article here. These comments will not be visible on the final published version of this article.
GeneralMy vote of 1 Pin
The Programmer10-Nov-13 21:16
memberThe Programmer10-Nov-13 21:16 
GeneralRe: My vote of 1 Pin
adriancs2-Jun-14 17:34
professionaladriancs2-Jun-14 17:34 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.170813.1 | Last Updated 17 Aug 2013
Article Copyright 2013 by Poonamchand Soni
Everything else Copyright © CodeProject, 1999-2017
Layout: fixed | fluid