.NET中利用js让子窗体向父页面传值

子页面C#后台代码：

   /// <summary>
        /// 将设置好的值赋给父页面
        /// </summary>
        /// <param name="count">需要传递的值</param>
        void SetValueToParentPage(int count, string strPersons)
        {
            StringBuilder jsStr = new StringBuilder();
            jsStr.Append(" var retValue = new Object();");
            if (count == 0)
            {
                jsStr.AppendFormat("retValue = null;");
            }
            else
            {
                jsStr.AppendFormat("retValue.Nums='{0}';", count);
                jsStr.AppendFormat("retValue.Names='{0}';", strPersons);
            }
            jsStr.Append("window.returnValue = retValue;window.close();");

            ClientScript.RegisterStartupScript(GetType(), "close", jsStr.ToString(), true);
        }

父页面前台js：

  function OpenPerChoose(url) {
            var openobj = window;
            if (typeof (window.dialogArguments) == "object") {
                openobj = window.dialogArguments;
            }
            var returnValue = showPopWin(url, 800, 600, openobj);
            if (returnValue != null) {
                document.getElementById("<%=txtQualifiedNums.ClientID %>").value = returnValue.Nums;
            }
        }

//弹出窗口
function showPopWin(url, width, height, returnFunc) {
    width = parseInt(width) + 30;
    height = parseInt(height) + 30;
    return window.showModalDialog(url + "&Datetime=" + GetTime(), document, "dialogWidth:" + width + "px;dialogHeight:" + height + "px;help:0;status:0;scroll:auto;center:1;resizable:1;");
}

 

      <th style="width: 100px;">
                培训合格人数：
            </th>
            <td style="width: 50px;">
                <asp:TextBox ID="txtQualifiedNums" runat="server" Width="50px" ReadOnly="true"></asp:TextBox>
            </td>