Question

所以我遇到了Telerik的UWP RadDataGrid问题。我有一个命令，用于更新绑定到RadDataGrid的集合中的项目。它设置了3个属性，我遇到的一个问题是一个枚举属性。状态。 Status枚举用于几个DataTemplateSelector和StyleSelector中。没有为Status属性定义的列。更新后，将引发异常：

System.InvalidOperationException
  HResult=0x80131509
  Message=Failed to compare two elements in the array.
  Source=System.Private.CoreLib
  StackTrace:
   at System.Collections.Generic.ArraySortHelper`1.BinarySearch(T[] array, Int32 index, Int32 length, T value, IComparer`1 comparer)
   at System.Array.BinarySearch[T](T[] array, Int32 index, Int32 length, T value, IComparer`1 comparer)
   at System.Collections.Generic.List`1.BinarySearch(Int32 index, Int32 count, T item, IComparer`1 comparer)
   at Telerik.Data.Core.Group.IndexOf(Object item, IComparer`1 sortComparer)
   at Telerik.Data.Core.Engine.ParallelDataEngine.Telerik.Data.Core.Engine.IDataEngine.GetFilteredItemIndex(Object item)
   at Telerik.Data.Core.LocalDataSourceProvider.ProcessPropertyChanged(Object sender, PropertyChangedEventArgs e)
   at Telerik.Data.Core.LocalDataSourceProvider.DataView_ItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
   at Telerik.Data.Core.EnumerableDataSourceView.HandlePropertyChanged(Object sender, PropertyChangedEventArgs e)
   at Telerik.Data.Core.EnumerableDataSourceView.Telerik.Core.IWeakEventListener.ReceiveEvent(Object sender, Object args)
   at Telerik.Core.WeakEventHandlerList`1.OnPropertyChanged(Object sender, PropertyChangedEventArgs e)
   at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
   at GalaSoft.MvvmLight.ObservableObject.RaisePropertyChanged(String propertyName)
   at GalaSoft.MvvmLight.ViewModelBase.RaisePropertyChanged[T](String propertyName, T oldValue, T newValue, Boolean broadcast)
   at GalaSoft.MvvmLight.ViewModelBase.Set[T](T& field, T newValue, Boolean broadcast, String propertyName)
   at MyLineItemViewModel.set_Status(Status value) in MyLineItemViewModel.cs:line 121

Inner Exception 1:
ArgumentException: Object must be of type String.

我经历了将enum属性的数据类型更改为字符串的问题，但是仍然遇到相同的问题。对于它的价值，我正在通过PropertySortDescriptors对集合进行排序，通过DelegateFilterDescriptor进行过滤，并通过PropertyGroupDescriptor进行分组。有人有建议吗？

Telerik的RadDataGrid和枚举

0 个答案: