How to export image to excel sheet. [Resolved]

string attachment = "attachment; filename=" + strFileName;
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", attachment);
Response.ContentType = "application/vnd.ms-excel";
Response.Charset = "";

Response.Write(TopContent.InnerHtml);

StringWriter oStringWriter = new StringWriter();
HtmlTextWriter oHtmlTextWriter = new HtmlTextWriter(oStringWriter);
divExport.RenderControl(oHtmlTextWriter);
Response.Write(oStringWriter.ToString());

Thanks & Regards,
Krishna