Article Source :
http://www.codeproject.com/Articles/14733/ViewState-Compression
the code
you just need to put this code in your page.
public byte[] Compress(byte[] data)
{
MemoryStream output = new MemoryStream();
GZipStream gzip = new GZipStream(output,
CompressionMode.Compress, true);
gzip.Write(data, 0, data.Length);
gzip.Close();
return output.ToArray();
}
public 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);
}
gzip.Close();
return output.ToArray();
}
protected override object LoadPageStateFromPersistenceMedium()
{
string viewState = Request.Form["__VSTATE"];
byte[] bytes = Convert.FromBase64String(viewState);
bytes = 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 = Compress(bytes);
ClientScript.RegisterHiddenField("__VSTATE", Convert.ToBase64String(bytes));
}
