写个函数把网页HTML源代码的换行符和空格过滤掉其实并不难，我这里是写了个基类，在asp.net编程时，页面只要继承这个基类，那么输出的HTML代码就会自动去掉换行符，和多余的空格符号，例如“> <”之间的空格符号。

using System;  
using System.Data;  
using System.Configuration;  
using System.Web; 
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Web.UI.HtmlControls; 
using System.Text.RegularExpressions;  
using System.IO;   
/// <summary>  
/// PageBase 页面基类 
/// </summary>  
public class PageBase : System.Web.UI.Page  
{      
 protected override void Render(HtmlTextWriter writer)      
 {         
  StringWriter sw = new StringWriter();          
  HtmlTextWriter htmlWriter = new HtmlTextWriter(sw);          
  base.Render(htmlWriter);          
  string html = sw.ToString();          
  html = Regex.Replace(html, "[\f\n\r\t\v]", "");          
  html = Regex.Replace(html, " {2,}", " ");          
  html = Regex.Replace(html, ">[ ]{1}", ">");          
  writer.Write(html);      
 }  
}