BasePage
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Diagnostics;

/// <summary>
///BasePage 的摘要说明
/// </summary>
public class BasePage : System.Web.UI.Page
{
    //利用Dictionary来筛选所有的多语言标签,然后做替换,可以缓存
    Dictionary<string, string> dic;
    public BasePage()
    {

}
    //需要替换的标签，标签头为数字字母下划线汉字

static readonly Regex re = new Regex
        (@"((\{)|(\%7B))[\w\-\+\|u4e00-\u9fa5]+?((\})|(\%7D))",
        RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);

//不需要替换的标签
    static readonly Regex re_nr = new
        Regex(@"<NOREPLACE>[\w\W]*?</NOREPLACE>", RegexOptions.Multiline | RegexOptions.IgnoreCase);

private string RenderTag(ref string content)
    {
        if (re_nr.IsMatch(content))//不需要替换标签
        {
            StringBuilder sb = new StringBuilder();

MatchCollection grouplist = re_nr.Matches(content);
            string[] reList = re_nr.Split(content);

for (int i = 0; i < grouplist.Count; i++)
            {
                sb.Append(ReplaceTag(ref reList[i]));
                sb.Append(grouplist[i].Value);
                sb.Append(ReplaceTag(ref reList[i + 1]));
            }

content = sb.ToString();
        }
        else
        {
            content = ReplaceTag(ref content);
        }
        return content;
    }

private string ReplaceTag(ref string content)
    {
        //模板标签{yes},{no},{search}
        MatchCollection mc = re.Matches(content);

if (dic == null)
        {
            dic = LanguageManager.GetResource();
        }

for (int i = 0; i < mc.Count; i++)
        {
            //如果数据库中还没有此字符串
            if (!dic.ContainsKey(mc[i].Value.TrimStart('{').TrimEnd('}')))
            {
                 content = content.Replace(mc[i].Value, mc[i].Value.TrimStart('{').TrimEnd('}'));

if (!dic.ContainsKey(mc[i].Value.TrimStart('{').TrimEnd('}')))
                {
                    LanguageManager.AddLanguageString(mc[i].Value.TrimStart('{').TrimEnd('}'));
                }
            }
            else if (dic[mc[i].Value.TrimStart('{').TrimEnd('}')] == null)
            {
                content = content.Replace(mc[i].Value, "$$$$");
            }
            else
            {

content = content.Replace(mc[i].Value, dic[mc[i].Value.TrimStart('{').TrimEnd('}')].ToString());

}
        }
        
        return content;
    }
    protected override void Render(HtmlTextWriter writer)
    {

Stopwatch stopwatch = new Stopwatch();
        stopwatch.Reset();
        stopwatch.Start();
        try
        {
            //会把页面的输出结果存储在这个StringBuilder中
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            HtmlTextWriter htw = new HtmlTextWriter(sw);
            base.Render(htw);
            string content = sb.ToString();

content = RenderTag(ref content);

//重新写入页面
            writer.Write(content);

}
        catch (Exception ex)
        {
            Response.Write(ex.ToString());
            Response.End();
        }
        finally
        {
            stopwatch.Stop();
            Response.Write("runtime:" + stopwatch.ElapsedMilliseconds.ToString() + "ms");
        }

}
}