把某一控件,如datagrid,转换成html代码的方法

 1     private string ToRead(System.Web.UI.Control ctl)
 2     {
 3         // HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=Text01.txt");
 4         HttpContext.Current.Response.Charset = "GB2312";
 5         HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;
 6         //HttpContext.Current.Response.ContentType = "text/txt";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword
 7         ctl.Page.EnableViewState = false;
 8         System.IO.StringWriter tw = new System.IO.StringWriter();
 9         System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
10         ctl.RenderControl(hw);
11         //Response.Write(tw.ToString());
12         return tw.ToString();
13 
14         //HttpContext.Current.Response.Write(tw.ToString());
15         //HttpContext.Current.Response.End();
16     }