In this post, I will show you how to compress HTTP response in asp.net for improving performance. Before going into details, let’s create a simple website with single page Default.aspx and add the following code into it Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="grdPerson" runat="server">
</asp:GridView>
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
grdPerson.DataSource = Person.Persons;
grdPerson.DataBind();
}
}
}
[Serializable]
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int Phone { get; set; }
public string Email { get; set; }
public static List<Person> Persons
{
get
{
return new List<Person>()
{
new Person(){FirstName="Santosh",LastName="Singh",Phone=1213123,Email="santosh@gmail.com"},
new Person(){FirstName="Ashok",LastName="Singh",Phone=1213123,Email="ashok@gmail.com"},
new Person(){FirstName="Bill",LastName="Gates",Phone=1213123,Email="bill@gmail.com"},
};
}
}
public override string ToString()
{
return string.Format(@"FirstName {0} & LastName {1} Phone {2} Email {3}", this.FirstName, this.LastName, this.Phone, this.Email);
}
}
Now, press F5 and see the response result in FireBug.You will see the response result in something like below.
Note down the Content-Length size(in my case is 1720) Let’s compress the response.For this right click on website ,and add Global.asax file.Inside this file add a method named {alertInfo}
void Application_BeginRequest(object sender, EventArgs e)
{
}
Inside it, paste the following code and see the result in FireBug.
void Application_BeginRequest(object sender, EventArgs e)
{
HttpContext incoming = HttpContext.Current;
string oldpath = incoming.Request.Path.ToLower();
incoming.Response.Filter = new System.IO.Compression.GZipStream(incoming.Response.Filter, System.IO.Compression.CompressionMode.Compress);
HttpContext.Current.Response.AppendHeader("Content-encoding", "gzip");
HttpContext.Current.Response.Cache.VaryByHeaders["Accept-encoding"] = true;
}
Check the Content-Length property after compression. Note:For compress/decompression I am using .net framework class [GZipStream]
Tags:
ASP.NET