asp.net 去掉viewstate

解决办法：app_code/ 存放一个类 用来截获HTTP
1.代码如下
using System;
using System.IO;
using System.Web;
using System.Text;
using System.Text.RegularExpressions;
/// <summary>
/// Removes whitespace from the webpage.
/// </summary>
public class ViewstateModule : IHttpModule
{
#region IHttpModule Members
void IHttpModule.Dispose()
{
// Nothing to dispose;
}
void IHttpModule.Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(context_BeginRequest);
}
#endregion
void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
//if (app.Request.Url.OriginalString.Contains(".aspx"))
//{
// app.Response.Filter = new ViewstateFilter(app.Response.Filter);
//}
//reg/目录下的不进行优化 因为发现render 后，验证码不能显示
if (!app.Request.Url.OriginalString.Contains("/reg/"))
{
if (app.Request.Url.OriginalString.Contains(".aspx"))
{
app.Response.Filter = new ViewstateFilter(app.Response.Filter);
}
}
//静态化后重也要处理
if (app.Request.Url.OriginalString.Contains(".html"))
{
app.Response.Filter = new ViewstateFilter(app.Response.Filter);
}
}
#region Stream filter
private class ViewstateFilter : Stream
{
public ViewstateFilter(Stream sink)
{
_sink = sink;
}
private Stream _sink;
#region Properites
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return true; }
}
public override bool CanWrite
{
get { return true; }
}
public override void Flush()
{
_sink.Flush();
}