Picker. Pick Single Folder Async Method
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public: virtual IAsyncOperation<StorageFolder ^> ^ PickSingleFolderAsync() = PickSingleFolderAsync;
public IAsyncOperation<StorageFolder> PickSingleFolderAsync();
Public Function PickSingleFolderAsync () As IAsyncOperation(Of StorageFolder)
When the call to this method completes successfully, it returns a storageFolder object that represents the folder that the user picked.
The following remarks relate to Windows 8 and 8.1:
If you try to show the file picker while your app is snapped the file picker will not be shown and an exception will be thrown. You can avoid this by making sure your app is not snapped or by unsnapping it before you call the file picker.