控件加载的问题

Question

我想在控件加载后呈现前,取到该控件的html流,然后根据条件修改该控件的html流,然后再呈现到页面去,如何做?
最好有代码,谢谢!!!!

Answer 1

可以重写Render方法.取消默认的Render实现.请把场景描述更清楚些. 是封装控件吗?

Answer 2

在Render方法里面如何取到完整的html字符流,加以处理?谢谢

Answer 3

    public class Render
    {
        public static string RenderControl(System.Web.UI.Control control)
        {
            StringBuilder result = new StringBuilder(1024);
            control.RenderControl(new HtmlTextWriter(new StringWriter(result)));
            return result.ToString();
        }
        public static string RenderControl(System.Web.UI.TemplateControl control)
        {
            StringBuilder result = new StringBuilder(1024);
            control.RenderControl(new HtmlTextWriter(new StringWriter(result)));
            return result.ToString();
        }
        public static string RenderPage(string pageLocation)
        {
            System.Web.HttpContext context = System.Web.HttpContext.Current;
            StringBuilder result = new StringBuilder(1024);
            context.Server.Execute(pageLocation,
            new HtmlTextWriter(new StringWriter(result)));
            return result.ToString();
        }
    } 
不知道谁写的

Answer 4

我不仅要取到html，还修改后写回去，如何搞？

Answer 5

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.WebControls.WebParts; 
using System.Web.UI.HtmlControls; 
using System.IO; /// <summary> 
/// static_htm 的摘要说明 
/// </summary> 
///     public abstract class static_htm : System.Web.UI.Page 
    { 
      protected override void Render(HtmlTextWriter writer)     {         StringWriter sw = new StringWriter();         HtmlTextWriter htmlw = new HtmlTextWriter(sw);         //调用Render方法，把页面内容输出到StringWriter中         base.Render(htmlw);         htmlw.Flush();         htmlw.Close();         //获得页面内容         string pageContent = sw.ToString();                     string path = Server.MapPath("~/CacheFile/");         if (!Directory.Exists(path))         {             Directory.CreateDirectory(path);         } 
        string pageUrl = StaticFileCacheModule.GetFileName(HttpContext.Current);         if(!File.Exists(pageUrl))         {   //把页面内容保存到静态文件中             using (StreamWriter stringWriter = File.CreateText(path + pageUrl))             {                 stringWriter.Write(pageContent); ;             }         } 
        //将页面内容输出到浏览器         Response.Write(pageContent);     } 
} 

Answer 6

StringWriter sw = new StringWriter();         HtmlTextWriter htmlw = new HtmlTextWriter(sw);         //调用Render方法，把页面内容输出到StringWriter中         base.Render(htmlw); 
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获取html流