子页面关闭时刷新父页面 javascript + asp.net

父窗口弹出子窗口的 button处理事件:

       private void butDeta_Click(object sender, System.EventArgs e)
        {
            Response.Write("<script>window.open('CangkuDetaList.aspx?strMateNo="+ txtMateNo.Text +"&strWaretype="+ ddlWareType.SelectedValue +"','new1','width=750,height=400,toolbar=0,scrollbars=2,top=200,left=200');</script>");
        }

父窗口html代码添加如下javascript代码:

function refresh()
{
    this.location = this.location;
}

子窗口关闭窗口的 button处理事件:

        private void imgbtnBack_Click(object sender, System.Web.UI.ImageClickEventArgs e)
        {
            Response.Write("<script>window.opener.refresh();window.opener=null;window.close();</script>");       
        }