protected void ddlPeriodo_SelectedIndexChanged(object sender, EventArgs e)
{
if (ddlPeriodo.SelectedValue != "0")
{
btnCargarDoc.Visible = true;
Session["archivo"] = null;
Session["carga"] = null;
AjaxFileUpload1.Dispose();
lnkNotificar.Visible = true;
}
else
{
lnkNotificar.Visible = false;
}
}