ServiceFeatureTable.QueryFeaturesAsync(QueryParameters q)如何按某个字段排序

arcgis runtime for .net 100的ServiceFeatureTable.QueryFeaturesAsync(QueryParameters q),参数QueryParameters的OrderByFields字段是只读的,我要按某个字段查询,如何实现?
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朱新颖

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参考下面链接看一下,我看它里面直接用到了GroupBy
https://github.com/Esri/indoor-routing-xamarin/blob/master/IndoorRouting/ViewModels/FloorSelectorViewModel.cs
也是可以OrderBy的:
https://msdn.microsoft.com/zh-cn/library/bb534966(v=vs.110).aspx

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