private void btnBro_Click(object sender, RoutedEventArgs e)
 {
     if (WelfareStandardID.Count == 0)
     {
         HtmlPage.Window.Alert("请先选择需要查看的申请记录!");
     }
     else
     {
         wssc.IsWelfareCanBrowserAsync(WelfareStandardID[0]);
     }
 }