如何去除页面自动生成的ViewState.doc

这是一个朋友的想法,刚开始我第一感觉是截留HtmlTextWriter的RenderBeforeTag事件不过发现Input Type=Hidden都不影应这个事件,郁闷Reflector查看RegisterHiddenField发现它们都存在于一个私有成员中最后没办法,只有使用页面过滤器了因为是一个简单的示例,所以两个类文件写在一起了,编译后生成的dll文件名为Blackant.Controls.dllusing System;using System.Collections.Generic;using System.Text;using System.Web;using System.Web.Security;using System.Xml;using System.Text.RegularExpressions;using System.IO;namespace Blackant.Controls. /*/ / Summary description for HiddenInputFilter / public class HiddenInputHttpModule : IHttpModule . IHttpModule Members#region IHttpModule Members public void Dispose() . /throw new Exception(The method or operation is not implemented.); public void Init(HttpApplication context) . /throw new Exception(The method or operation is not implemented.); context.ReleaseRequestState += new EventHandler(context_ReleaseRequestState); #endregion 事件#region 事件 void context_ReleaseRequestState(object sender, EventArgs e) . HttpResponse response = HttpContext.Current.Response; if (response.ContentType=text/html) . HiddenInputFilter filter = new HiddenInputFilter(response.Filter); response.Filter = filter; #endregion IRawPath Members#region IRawPath Members private string _rawPath = ; public string GetPath() . return _rawPath; #endregion public class HiddenInputFilter : Stream . 私有成员#region 私有成员 Stream responseStream; long position; StringBuilder responseHtml; #endregion 构造#region 构造 public HiddenInputFilter(Stream inputStream) . responseStream = inputStream; responseHtml = new StringBuilder(); #endregion 重写的方法#region 重写的方法 public override bool CanRead . get . return true; public override bool CanSeek . get . return true; public override bool CanWrite . get . return true; public override void Close() . responseStream.Close(); public override void Flush() . responseStream.Flush(); public override long Length . get . return 0; public override long Position . get . return position; set . position = value; public override long Seek(long offset, SeekOrigin origin) . return responseStream.Seek(offset, origin); public override void SetLength(long length) . responseStream.SetLength(length); public override int Read(byte buffer, int offset, int count) . return responseStream.Read(buffer, offset, count); public override void Write(byte buffer, int offset, int count) . string finalHtml = System.Text.UTF8Encoding.UTF8.GetString(buffer, offset, count); /找到input type=hidden name=_VIEWSTATE string pattern=*; finalHtml=Regex.Replace(finalHtml, pattern, string.Empty, RegexOptions.IgnoreCase | RegexOptions.Multiline); / Write the response byte data = System.Text.UTF8Encoding.UTF8.GetBytes(finalHtml); responseStream.Write(data, 0, data.Length); #endregion 然后在web项目中引用这个dll修改web.config,加入以下内容于System.Web配置节 其实核心内容很简单HiddenInputHttpModule中如下指示使用页面过滤器HiddenInputFilter filter = new HiddenInputFilter(response.Filter);response.Filter = filter;HiddenInputFilter 中则string finalHtml = System.Text.UTF8Encoding.UTF8.GetString(buffer, offset, count); /找到input typ