How can I export images from ASPxGridView to excel in .net?

Question

protected void btnXlsExport_Click(object sender, EventArgs e)

{

//GridExporter.WriteXlsToResponse();

Response.Clear();

Response.Buffer = true;

Response.ContentType = "application/vnd.ms-excel";

Response.AddHeader("content-disposition", "attachment;filename=MyFiles.xls");

Response.Charset = "";

this.EnableViewState = false;

System.IO.StringWriter sw = new System.IO.StringWriter();

System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

ASPxGridView1.RenderControl(htw);

Response.Write(sw.ToString());

Response.End();

}