Android.Content.ContentResolver.Query Method
Query the given URI, returning a Android.Database.ICursor over the result set with optional support for cancellation.

Syntax

[Android.Runtime.Register("query", "(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;Landroid/os/CancellationSignal;)Landroid/database/Cursor;", "")]
public Android.Database.ICursor Query (Android.Net.Uri uri, string[] projection, string selection, string[] selectionArgs, string sortOrder, Android.OS.CancellationSignal cancellationSignal)

See Also

Android.Database.ICursor

Parameters

uri
The URI, using the content:// scheme, for the content to retrieve.
projection
A list of which columns to return. Passing null will return all columns, which is inefficient.
selection
A filter declaring which rows to return, formatted as an SQL WHERE clause (excluding the WHERE itself). Passing null will return all rows for the given URI.
selectionArgs
You may include ?s in selection, which will be replaced by the values from selectionArgs, in the order that they appear in the selection. The values will be bound as Strings.
sortOrder
How to order the rows, formatted as an SQL ORDER BY clause (excluding the ORDER BY itself). Passing null will use the default sort order, which may be unordered.
cancellationSignal
A signal to cancel the operation in progress, or null if none. If the operation is canceled, then Android.OS.OperationCanceledException will be thrown when the query is executed.

Returns

Documentation for this section has not yet been entered.

Remarks

Query the given URI, returning a Android.Database.ICursor over the result set with optional support for cancellation.

For best performance, the caller should follow these guidelines:

  • Provide an explicit projection, to prevent reading data from storage that aren't going to be used.
  • Use question mark parameter markers such as 'phone=?' instead of explicit values in the selection parameter, so that queries that differ only by those values will be recognized as the same for caching purposes.

[Android Documentation]

Requirements

Namespace: Android.Content
Assembly: Mono.Android (in Mono.Android.dll)
Assembly Versions: 0.0.0.0
Since: Added in API level 16