generate excel from datatable in asp c#

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i want to download data of datatable in excel. in VS 2005
i tried many method but its no use now i am using following approach.

C#

public void ExportToExcel(DataTable dt)
        {
            if (dt.Rows.Count > 0)
            {
                Response.Clear();
                string filename = "Breakup wise Stock Summary.xls";
                System.IO.StringWriter tw = new System.IO.StringWriter();
                System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
                DataGrid dgGrid = new DataGrid();
                dgGrid.DataSource = dt;
                dgGrid.DataBind();

                
                dgGrid.RenderControl(hw);
                //Response.ContentType = application/vnd.ms-excel;
                Response.ContentType = "application/vnd.ms-excel";
                //Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename + "");
                this.EnableViewState = false;
                Response.Write(tw.ToString());
                Response.End();
            }
        }

but getting error.
sys.webforms.PageRequestManagerParsererrorException: The message recieved from the server could not be parsed. Common cause for this error are when the responce is modified by calls to Response.Write(),response filter,HttpModules, or server trace is enable.
Detail:Error parsing near

Posted 3-Jan-13 20:54pm

Muhammad Talha Baig

Updated 3-Jan-13 21:39pm

AshishChaudha

v6

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AshishChaudha · Accepted Answer · 2013-01-03T21:39:00

Solution 1

Please find solved example in following link

Export Gridview Data to Excel in ASP.NET[^]

Thanks

Posted 3-Jan-13 21:39pm

AshishChaudha

salamkudru · Accepted Answer · 2013-01-03T22:38:00

Try This,

C#

public void ExportToExcel()
{
this.EnableViewState = false;
Response.Charset = string.Empty;
BindDataGrid(false); //Function for Binding Grid,false indicates allopaging is false
   Response.AddHeader("content-disposition",   "attachment;filename=CategoryList_" + System.DateTime.Now.ToShortDateString() + ".xls");
            Response.ContentType = "application/ms-excel";
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            System.IO.StringWriter stringWrite = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
            System.Web.UI.HtmlControls.HtmlForm htmlform = new System.Web.UI.HtmlControls.HtmlForm();
            htmlform.Attributes["runat"] = "Server";
            dgvCategory.Parent.Controls.Add(htmlform);
            htmlform.Controls.Add(dgvCategory);
            htmlform.RenderControl(htmlWrite);
            Response.Write(stringWrite.ToString());
            //gvEmployeePrint.Visible = false;
            Response.End();
}