protected override void Render(HtmlTextWriter writer) 
{ 
//把最终要输出的html压缩后再输出 
StringWriter html = new StringWriter(); 
HtmlTextWriter tw = new HtmlTextWriter(html); 
base.Render(tw); 
string outhtml = html.ToString(); 
outhtml = Regex.Replace(outhtml, "\\s+", " "); 
outhtml = Regex.Replace(outhtml, ">\\s+<", "><"); 
outhtml = outhtml.Trim(); 
writer.Write(outhtml); 
} 
protected override void Render(HtmlTextWriter writer) 
{ 
//最终输出前先存为html文件,如果发布最新信息了,可以打开一次default.aspx,然后他又会生成一次html 
//这是默认的Render实现,直接输出到writer中 
//base.Render(writer); 
StringWriter html = new StringWriter(); 
HtmlTextWriter tw = new HtmlTextWriter(html); 
//通过base.Render()方法,把生成的HTML写入到我们定义的tw中 
base.Render(tw); 
string path = Server.MapPath("index.html"); 
StreamWriter sw = new StreamWriter(path, false, System.Text.Encoding.Default); 
//写入到文件中 
sw.Write(html.ToString()); 
sw.Close(); 
//写入到writer中,以输出页面的HTML 
//注意,这里不能再调用base.Render(writer),会出现错误 
writer.Write(html.ToString()); 
}