本文整理汇总了C#中MobileServiceCollection.OrderByDescending方法的典型用法代码示例。如果您正苦于以下问题：C# MobileServiceCollection.OrderByDescending方法的具体用法？C# MobileServiceCollection.OrderByDescending怎么用？C# MobileServiceCollection.OrderByDescending使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MobileServiceCollection的用法示例。
在下文中一共展示了MobileServiceCollection.OrderByDescending方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: RefreshTelemetryItems
public async Task RefreshTelemetryItems()
{
MobileServiceInvalidOperationException exception = null;
try
{
// This code refreshes the entries in the list view by querying the telemetry2 table.
telemetryItems = await telemetryTable
.Where
(s => (s.Complete == false))
.ToCollectionAsync();
}
catch (MobileServiceInvalidOperationException e)
{
exception = e;
}
if (exception != null)
{
await new MessageDialog(exception.Message, "Error loading items").ShowAsync();
}
else
{
//Sort in descending order = Most recent first .. Ww want the latest value of each sensor
var sortedTelemetryItems = telemetryItems
.OrderByDescending(telemetryItem => telemetryItem.Id);
//Group by sensor name
var orderGroups =
from p in sortedTelemetryItems
group p by p.Sensor into g
select new { Category = g.Key, Sensors = g };
//Get only the first item in each group = Most Recent
List<Telemetry2> telemetryItemsListMostRecentInGroup = new List<Telemetry2>();
foreach (var key in orderGroups)
{
telemetryItemsListMostRecentInGroup.Add(key.Sensors.First<Telemetry2>());
//Mark other vakues as complete. Embedded devices then can just get the "incomplete values".
for (int i = 1; i < key.Sensors.Count(); i++)
{
Telemetry2 t2i = key.Sensors.ElementAt<Telemetry2>(i);
t2i.Complete = true;
await telemetryTable.UpdateAsync(t2i);
}
}
if (listTelemetryPage != null)
//Set as displayed list
listTelemetryPage.ListItems.ItemsSource = telemetryItemsListMostRecentInGroup.OrderBy(s => s.Id).Reverse(); // telemetryItems;
//this.ButtonSave.IsEnabled = true;
}
}