Below is the simple utility that will export gridview to excel.
You can add custom check while preparing gridheader for export
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;
using System.Drawing;
public class GridviewExportUtil
{
public static void Export(GridView gv)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=DataExport.xls");
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.ContentType = "application/ms-excel";
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
Table table = new Table();
table.GridLines = gv.GridLines;
if (gv.HeaderRow != null)
{
GridviewExportUtil.PrepareControlForExport(gv.HeaderRow);
table.Rows.Add(gv.HeaderRow);
}
foreach (GridViewRow row in gv.Rows)
{
GridviewExportUtil.PrepareControlForExport(row);
table.Rows.Add(row);
}
if (gv.FooterRow != null)
{
GridviewExportUtil.PrepareControlForExport(gv.FooterRow);
table.Rows.Add(gv.FooterRow);
}
table.RenderControl(htw);
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
}
}
private static void PrepareControlForExport(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);
}
else if (current is HiddenField)
{
control.Controls.Remove(current);
}
else if (current is CheckBox)
{
control.Controls.Remove(current);
}
if (current.HasControls())
{
GridviewExportUtil.PrepareControlForExport(current);
}
}
}
}