Windows.Storage.Search Namespace

Provides classes for enumerating content in storage and performing Advanced Query Syntax (AQS) searches on the content.

Apps can retrieve content collections in a number of shapes, including the normal folder hierarchy, flat lists, and media-oriented shapes based on item properties such as year, month, artist, album, and so on. Also, apps can add content and properties to the system index to enable fast searches of app content.

Apps can also receive events that fire when a collection changes because files were created, modified, or deleted.

For an individual item, the system exposes the stream associated with the item, a thumbnail, and item properties, and provides the ability to create and delete items.

Classes

ContentIndexer	Enables UWP apps to make private content searchable by using the system index.
ContentIndexerQuery	Represents a query for content properties in the ContentIndexer.
IndexableContent	Represents app content and properties that can be added to the ContentIndexer.
QueryOptions	Specifies the parameters of a search query for enumerating the contents of storage folders.
SortEntryVector	Provides access to the sorting criteria of the query results as a collection of SortEntry objects.
StorageFileQueryResult	Provides access to the results of a query of the files in the location that is represented by a StorageFolder object. You can use StorageFileQueryResult to enumerate the files in that StorageFolder location.
StorageFolderQueryResult	Provides access to the results of a query that lists the folder (or file groups) in the folder being queried (which is represented by a StorageFolder). You can use a StorageFolderQueryResult to enumerate folders or file groups in that folder.
StorageItemQueryResult	Provides access to the results of a query that lists all items including files and folders (or file groups) in the folder being queried (which is represented by a StorageFolder). You can use storageItemQueryResult to enumerate the files and folders in that StorageFolder.
StorageLibraryChangeTrackerTriggerDetails	Contains the details of a storage library change tracker.
StorageLibraryContentChangedTriggerDetails	Contains the details of a storage library content change tracker.
ValueAndLanguage	Specifies the language of a property, as a BCP-47 language code.

Structs

SortEntry

An entry in the SortOrder list the specifies a property and ordering that is used to sort query results.

Interfaces

IIndexableContent	Represents app content and properties that can be added to the ContentIndexer.
IStorageFolderQueryOperations	Provides methods to create search queries and retrieve files from a folder. This interface is implemented by StorageFolder objects, which can represent file system folders, libraries, or virtual folders that are automatically generated when queries are created using group-based CommonFolderQuery values like GroupByAlbum.
IStorageQueryResultBase	Provides methods to access to and manage query results.

Enums

CommonFileQuery	Specifies how to sort the files in the query results and determines whether the query is shallow or deep. Query results for deep queries include all files in all of the subfolders of the current folder, sorted according to the specified option.
CommonFolderQuery	Specifies how to group files into folders in the query results and determines whether the query is shallow or deep. Query results for deep queries include all files in all of the subfolders of the current folder, grouped into folders according to the specified option.
DateStackOption	Indicates the unit of time used to group files into folders if a CommonFolderQuery based on date is used to create a QueryOptions object.
FolderDepth	Indicates whether all files and subfolders of the folder being queried will be enumerated or if only the top-level files and subfolders will be enumerated.
IndexedState	Indicates whether a StorageFolder is included in the system index.
IndexerOption	Specifies whether the query should use the system index of the file system when enumerating content in the folder being queried. The indexer can retrieve results faster but is not available in all file locations.

See also

• File search sample (Windows 10)
• Folder enumeration sample (Windows 10)
• Content indexer sample