using System;

using System.Data;

using System.Configuration;

using System.IO;

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;

public class GridViewExportToExcel

{

public static void Export(string fileName, GridView gv)

{

HttpContext.Current.Response.Clear();

//Export will take two parameter first one the name of Excel File, and second one for gridview to be exported
HttpContext.Current.Response.AddHeader(

"content-disposition", string.Format("attachment; filename={0}", fileName));

HttpContext.Current.Response.ContentType = "application/octet-stream";

using (StringWriter strWriter = new StringWriter())

{

using (HtmlTextWriter htmlWriter = new HtmlTextWriter(strWriter))

{

// Create a form to contain the grid

Table table = new Table();

// add the header row to the table

if (gv.HeaderRow != null)

{

GridViewExportToExcel.ExportControl(gv.HeaderRow);

table.Rows.Add(gv.HeaderRow);

}

// add each of the data rows to the table

foreach (GridViewRow row in gv.Rows)

{

GridViewExportToExcel.ExportControl(row);

table.Rows.Add(row);

}

// add the footer row to the table

if (gv.FooterRow != null)

{

GridViewExportToExcel.ExportControl(gv.FooterRow);

table.Rows.Add(gv.FooterRow);

}

// render the table into the htmlwriter

table.RenderControl(htmlWriter);

// render the htmlwriter into the response

HttpContext.Current.Response.Write(strWriter.ToString());

HttpContext.Current.Response.End();

}

}

}

/// Replace controls with literals

private static void ExportControl(Control control)

{

for (int i = 0; i < control.Controls.Count; i++)

{

Control current = control.Controls[i];

if (current is LinkButton)

{

control.Controls.Remove(current);

control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));

}

else if (current is ImageButton)

{

control.Controls.Remove(current);

control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));

}

else if (current is HyperLink)

{

control.Controls.Remove(current);

control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));

}

else if (current is DropDownList)

{

control.Controls.Remove(current);

control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));

}

else if (current is CheckBox)

{

control.Controls.Remove(current);

control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));

}

//Like that you may convert any control to literals

if (current.HasControls())

{

GridViewExportToExcel.ExportControl(current);

}

}

}

}