using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ChartDirector;
protected void Button1_Click(object sender, EventArgs e)
{
//GridView1.AllowPaging = false; //write this code only if paging is enabled.
Response.Clear();
Response.AddHeader("content-disposition", "attachment;filename=FileName.ppt");//for text file write FileName.txt
Response.Charset = "";
// If you want the option to open the Excel file without saving than comment out the line below
// Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.ppt";
System.IO.StringWriter stringWrite = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
GridView1.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.End();
// GridView1.AllowPaging = true; //write this code only if paging is enabled.
}
public override void VerifyRenderingInServerForm(Control control)
{
//Keep it empty
}