StorageFolderQueryResult.FindStartIndexAsync(Object) Method
Definition
Important
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Retrieves the index of the folder from the query results that most closely matches the specified property value. The property that is matched is determined by the first SortEntry of the QueryOptions.SortOrder list.
public:
virtual IAsyncOperation<unsigned int> ^ FindStartIndexAsync(Platform::Object ^ value) = FindStartIndexAsync;/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<uint32_t> FindStartIndexAsync(IInspectable const& value);[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<uint> FindStartIndexAsync(object value);function findStartIndexAsync(value)Public Function FindStartIndexAsync (value As Object) As IAsyncOperation(Of UInteger)Parameters
- value
-
Object
Platform::Object
IInspectable
The property value to match when searching the query results. The property to that is used to match this value is the property in the first SortEntry of the QueryOptions.SortOrder list.
Returns
When this method completes successfully it returns the index of the matched folder in the query results; otherwise it returns uint.MaxValue.
Implements
- Attributes
Examples
This example shows how to find the first album that has a title that begins with an "R" in a set of query results that contains albums sorted by title.
QueryOptions queryOptions = new QueryOptions();
queryOptions.FolderDepth = FolderDepth.Deep;
queryOptions.IndexerOption = IndexerOption.OnlyUseIndexer;
SortEntry album = new SortEntry();
album.AscendingOrder = true;
album.PropertyName = "System.Music.AlbumTitle";
queryOptions.SortOrder.Add(album);
StorageFolderQueryResult queryResult = musicFolder.CreateFolderQueryWithOptions(queryOptions);
var firstIndex = await queryResult.FindStartIndexAsync("R");