javascript - 从移动服务数据源的 ListView 中获取值(value)

Question

我正在使用 WinJS.Binding.List() 将 Azure 移动服务数据绑定(bind)到 Listview。 如何从 ListView 中获取所选内容的值和索引？

//Javascript
var table = client.getTable('PatientInfo');
var birthCertData = function () {
            table.read().done(function (results) {
                   birthCert = new WinJS.Binding.List(results);
                   listItems.winControl.itemDataSource = birthCert.dataSource;
               });
        };

function selectionChangedHandler() {
//what should I type here to get the selectedCell Value and index?
        }

        listItems.addEventListener("selectionchanged", selectionChangedHandler, false);

这是我的html

<div id="TemplateItem" data-win-control="WinJS.Binding.Template" style="display: none">
   <div style="display: -ms-grid; -ms-grid-columns: auto 1fr">
      <div style="-ms-grid-column: 2; margin-left: 5px; height: 40px; text-align: center; vertical-align: middle">
        <h3 data-win-bind="innerText: birthcert"></h3>
      </div>
   </div>
</div>

<div id="listItems" class="win-selectionstylefilled" 
     data-win-control="WinJS.UI.ListView"
     data-win-options="{ itemTemplate: select('#TemplateItem'), 
     layout: {type: WinJS.UI.ListLayout}, 
     selectionMode: 'single', 
     tapBehavior: 'directSelect'}">
</div>

 <div style="margin: 5px 0px 0px 72px; -ms-grid-column: 2">
    <input type="text" id="textInput" />
 </div>

屏幕截图:/image/Di0BP.png

谢谢

Answer 1

通过selection ListView的属性

function selectionChangedHandler(e) {
    var numItemsSelected = listItems.selection.count;
    var indicesSelected = listItems.selection.getIndices();
    var itemsSelected = listItems.selection.getItems();
    ...

}

ISelection界面为您提供了其他可用于检测选择状态的选项。请注意，事件的详细数据 (e.detail) 将为 null，因此如果您想一般性地获取源 ListView，可以通过 e.srcElement