Question

我想获取在ListView中选择的项目的值（type_of_service，picture）。 servicesList.selection.type_of_service.value似乎不起作用。

var tosTable = client.getTable("TypeOfService");
var serviceTypes = new WinJS.Binding.List();

tosTable.orderBy("type_of_service")
    .select("type_of_service", "picture")
    .read()
    .done(function (results) {
        serviceTypes = new WinJS.Binding.List(results);
        servicesList.winControl.itemDataSource = serviceTypes.dataSource;
    });

var Service = WinJS.Class.define(
    function (type_of_service, picture) {
        this.type_of_service = type_of_service;
        this.picture = picture;
    },
    {
        _type_of_service: undefined,
        _picture: undefined
    }
);

servicesList.addEventListener("selectionchanged", function () {
    var selectedService = new Service(servicesList.selection.type_of_service.value,
        servicesList.selection.picture.value);

        WinJS.Navigation.navigate("/pages/orgs/orgs.html");
    });
 });

Answer 1

这行代码

servicesList.winControl.itemDataSource = serviceTypes.dataSource;

让我觉得＆＃34; servicesList＆＃34;是ListView DOM元素，而不是ListView本身。因此，如果您想获得选择，您应该将您的代码从servicesList.selection更改为使用servicesList。 winControl .selection。

另一件事是选择可以是多个项目，因此它不仅仅是一个数据项，而是一个ISelection接口：http://msdn.microsoft.com/en-us/library/windows/apps/hh872204.aspx

所以你必须做类似的事情：

var selection = servicesList.winControl.selection;
if(selection.count()) {
    selection.getItems().then(function(items) {
        // do something with the selected item
        console.log(items[0].data); 
    }
}

获取Selected ListView Item WinJS的值

1 个答案: