protected void btnFiltro_Click(object sender, EventArgs e)
 {
     //if (ddlInventarios.SelectedValue.ToString() != "0")
     //{
     //    RadGrid1.DataSource = ic.Listado_Codigos(Convert.ToInt32(ddlInventarios.SelectedValue.ToString()));
     //    RadGrid1.DataBind();
     //}
     if (txtNombreLista.Text != "")
     {
         RadGrid1.DataSource = ic.Listado_Codigos(txtNombreLista.Text);
         RadGrid1.DataBind();
     }
 }