26 Stream s=new GZipOutputStream(ms);
27 s.Write( data, 0, data.Length );
28 s.Close();
29 return ms.ToArray();
30 }
31
32 /**////
33 /// 解压数据
34 ///
35 /// 待解压的字节数组
36 ///
37 public static byte[] DeCompressByte(byte[] data)
38 {
39 byte[] writeData = new byte[2048];
40 MemoryStream ms= new MemoryStream( data );
41 Stream sm = new GZipInputStream(ms) as Stream;
42 MemoryStream outStream = new MemoryStream();
43 while (true)
44 {
45 int size = sm.Read(writeData,0, writeData.Length );
46 if (size >0)
47 {
48 outStream.Write(writeData,0,size);
49 }
50 else
51 {
52 break;
53 }
54 }
55 sm.Close();
56 byte[] outArr = outStream.ToArray();
57 outStream.Close();
58 return outArr;
59 }
60 }
61} 然后我们在派生于类Page的页面控制基类中重载方法LoadPageStateFromPersistenceMedium()与SavePageStateToPersistenceMedium(Object viewState),代码如下:
1Load & Save ViewState Data#region Load & Save ViewState Data
2 protected override object LoadPageStateFromPersistenceMedium()
3 {
4//从自己注册的隐藏域__SmartViewState中读取数据
5 string viewState = Request.Form["__SmartViewState"];
6 byte[] bytes = Convert.FromBase64String(viewState);
7 //调用上面提供的静态方法CompressionHelper.DeCompressByte()来解压数据
8 bytes = CompressionHelper.DeCompressByte(bytes);
9 LosFormatter formatter = new LosFormatter();
10 return formatter.Deserialize(Convert.ToBase64String(bytes));
11
12 }
13
14 protected override void SavePageStateToPersistenceMedium(Object viewState)
15 {
16 LosFormatter formatter = new LosFormatter();
17 StringWriter writer = new StringWriter();
18 formatter.Serialize(writer, viewState);
19 string viewStateString = writer.ToString();
20 byte[] bytes = Convert.FromBase64String(viewStateString);
21 //调用上面提供的静态方法CompressionHelper.CompressByte()来压缩数据
22 bytes = CompressionHelper.CompressByte(bytes);
23
24 //注册一个新的隐藏域__SmartViewState，你也可以自己定义
25 this.RegisterHiddenField("__SmartViewState", Convert.ToBase64String(bytes));
26 }
27#endregion
经过以上处理，web输出页面中的源代码就是型如：
原来的隐藏域"__VIEWSTATE"值为空，而取而代之的是我们自己注册的新的隐藏域"__SmartViewState"来存储了经过压缩后的字符串，这样以来，提速效果是明显的，结合我们的项目，象DG3G.COM的首页原ViewState串值大约是28K，压缩后为7K，而Acafa.com的首页原ViewState串值大约是43K，压缩后为8K。这样的处理还是比较令人满意的。当然，如果你觉得还不够彻底，你还可以把ViewState串存储在Session中，不过这样做，对服务器内存的压力将陡增（尤其是访问量较大的时候），建议还是不要轻易使用，如果你Web服务器内存有个10G、8G的，不妨试试。下面给出相关修改代码：
做人要厚道，请注明转自酷网动力(www.ASPCOOL.COM)。