diff --git a/extensions/mongo/Collection.php b/extensions/mongo/Collection.php
index 5eca45a..1add592 100644
--- a/extensions/mongo/Collection.php
+++ b/extensions/mongo/Collection.php
@@ -59,6 +59,7 @@ use Yii;
  *
  * @property string $name name of this collection. This property is read-only.
  * @property string $fullName full name of this collection, including database name. This property is read-only.
+ * @property array $lastError last error information. This property is read-only.
  *
  * @author Paul Klimov <klimov.paul@gmail.com>
  * @since 2.0
@@ -87,6 +88,14 @@ class Collection extends Object
 	}
 
 	/**
+	 * @return array last error information.
+	 */
+	public function getLastError()
+	{
+		return $this->mongoCollection->db->lastError();
+	}
+
+	/**
 	 * Drops this collection.
 	 * @throws Exception on failure.
 	 * @return boolean whether the operation successful.
@@ -553,6 +562,15 @@ class Collection extends Object
 	}
 
 	/**
+	 * Throws an exception if there was an error on the last operation.
+	 * @throws Exception if an error occurred.
+	 */
+	protected function tryLastError()
+	{
+		$this->tryResultError($this->getLastError());
+	}
+
+	/**
 	 * Converts user friendly condition keyword into actual Mongo condition keyword.
 	 * @param string $key raw condition key.
 	 * @return string actual key.
diff --git a/extensions/mongo/Connection.php b/extensions/mongo/Connection.php
index 5396e27..8c19cb4 100644
--- a/extensions/mongo/Connection.php
+++ b/extensions/mongo/Connection.php
@@ -162,10 +162,10 @@ class Connection extends Component
 
 	/**
 	 * Returns the Mongo collection with the given name.
-	 * @param string|array $name collection name. If string considered as  the name of the collection
+	 * @param string|array $name collection name. If string considered as the name of the collection
 	 * inside the default database. If array - first element considered as the name of the database,
 	 * second - as name of collection inside that database
-	 * @param boolean $refresh whether to reload the table schema even if it is found in the cache.
+	 * @param boolean $refresh whether to reload the collection instance even if it is found in the cache.
 	 * @return Collection Mongo collection instance.
 	 */
 	public function getCollection($name, $refresh = false)
@@ -179,6 +179,28 @@ class Connection extends Component
 	}
 
 	/**
+	 * Returns the Mongo GridFS collection.
+	 * @param string|array $prefix collection prefix. If string considered as the prefix of the GridFS
+	 * collection inside the default database. If array - first element considered as the name of the database,
+	 * second - as prefix of the GridFS collection inside that database, if no second element present
+	 * default "fs" prefix will be used.
+	 * @param boolean $refresh whether to reload the collection instance even if it is found in the cache.
+	 * @return file\Collection Mongo GridFS collection instance.
+	 */
+	public function getFileCollection($prefix = 'fs', $refresh = false)
+	{
+		if (is_array($prefix)) {
+			list ($dbName, $collectionPrefix) = $prefix;
+			if (!isset($collectionPrefix)) {
+				$collectionPrefix = 'fs';
+			}
+			return $this->getDatabase($dbName)->getFileCollection($collectionPrefix, $refresh);
+		} else {
+			return $this->getDatabase()->getFileCollection($prefix, $refresh);
+		}
+	}
+
+	/**
 	 * Returns a value indicating whether the Mongo connection is established.
 	 * @return boolean whether the Mongo connection is established
 	 */
diff --git a/extensions/mongo/Database.php b/extensions/mongo/Database.php
index 6495eb8..01d43de 100644
--- a/extensions/mongo/Database.php
+++ b/extensions/mongo/Database.php
@@ -26,6 +26,10 @@ class Database extends Object
 	 * @var Collection[] list of collections.
 	 */
 	private $_collections = [];
+	/**
+	 * @var file\Collection[] list of GridFS collections.
+	 */
+	private $_fileCollections = [];
 
 	/**
 	 * Returns the Mongo collection with the given name.
@@ -42,6 +46,20 @@ class Database extends Object
 	}
 
 	/**
+	 * Returns Mongo GridFS collection with given prefix.
+	 * @param string $prefix collection prefix.
+	 * @param boolean $refresh whether to reload the table schema even if it is found in the cache.
+	 * @return file\Collection mongo GridFS collection.
+	 */
+	public function getFileCollection($prefix = 'fs', $refresh = false)
+	{
+		if ($refresh || !array_key_exists($prefix, $this->_fileCollections)) {
+			$this->_fileCollections[$prefix] = $this->selectFileCollection($prefix);
+		}
+		return $this->_fileCollections[$prefix];
+	}
+
+	/**
 	 * Selects collection with given name.
 	 * @param string $name collection name.
 	 * @return Collection collection instance.
@@ -55,6 +73,19 @@ class Database extends Object
 	}
 
 	/**
+	 * Selects GridFS collection with given prefix.
+	 * @param string $prefix file collection prefix.
+	 * @return file\Collection file collection instance.
+	 */
+	protected function selectFileCollection($prefix)
+	{
+		return Yii::createObject([
+			'class' => 'yii\mongo\file\Collection',
+			'mongoCollection' => $this->mongoDb->getGridFS($prefix)
+		]);
+	}
+
+	/**
 	 * Creates new collection.
 	 * Note: Mongo creates new collections automatically on the first demand,
 	 * this method makes sense only for the migration script or for the case
diff --git a/extensions/mongo/file/Collection.php b/extensions/mongo/file/Collection.php
new file mode 100644
index 0000000..f3e8d33
--- /dev/null
+++ b/extensions/mongo/file/Collection.php
@@ -0,0 +1,109 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\mongo\file;
+
+use yii\mongo\Exception;
+
+/**
+ * Collection represents the Mongo GridFS collection information.
+ *
+ * @method \MongoGridFSCursor find() returns a cursor for the search results.
+ *
+ * @author Paul Klimov <klimov.paul@gmail.com>
+ * @since 2.0
+ */
+class Collection extends \yii\mongo\Collection
+{
+	/**
+	 * @var \MongoGridFS Mongo GridFS collection instance.
+	 */
+	public $mongoCollection;
+
+	/**
+	 * Removes data from the collection.
+	 * @param array $condition description of records to remove.
+	 * @param array $options list of options in format: optionName => optionValue.
+	 * @return integer|boolean number of updated documents or whether operation was successful.
+	 * @throws Exception on failure.
+	 */
+	public function remove($condition = [], $options = [])
+	{
+		$result = parent::remove($condition, $options);
+		$this->tryLastError(); // MongoGridFS::remove will return even if the remove failed
+		return $result;
+	}
+
+	/**
+	 * @param string $filename name of the file to store.
+	 * @param array $metadata other metadata fields to include in the file document.
+	 * @return mixed the "_id" of the saved file document. This will be a generated [[\MongoId]]
+	 * unless an "_id" was explicitly specified in the metadata.
+	 */
+	public function put($filename, $metadata = [])
+	{
+		return $this->mongoCollection->put($filename, $metadata);
+	}
+
+	/**
+	 * @param string $bytes string of bytes to store.
+	 * @param array $metadata other metadata fields to include in the file document.
+	 * @param array $options list of options in format: optionName => optionValue
+	 * @return mixed the "_id" of the saved file document. This will be a generated [[\MongoId]]
+	 * unless an "_id" was explicitly specified in the metadata.
+	 */
+	public function storeBytes($bytes, $metadata = [], $options = [])
+	{
+		$options = array_merge(['w' => 1], $options);
+		return $this->mongoCollection->storeBytes($bytes, $metadata, $options);
+	}
+
+	/**
+	 * @param string $filename name of the file to store.
+	 * @param array $metadata other metadata fields to include in the file document.
+	 * @param array $options list of options in format: optionName => optionValue
+	 * @return mixed the "_id" of the saved file document. This will be a generated [[\MongoId]]
+	 * unless an "_id" was explicitly specified in the metadata.
+	 */
+	public function storeFile($filename, $metadata = [], $options = [])
+	{
+		$options = array_merge(['w' => 1], $options);
+		return $this->mongoCollection->storeFile($filename, $metadata, $options);
+	}
+
+	/**
+	 * @param string $name name of the uploaded file to store. This should correspond to
+	 * the file field's name attribute in the HTML form.
+	 * @param array $metadata other metadata fields to include in the file document.
+	 * @return mixed the "_id" of the saved file document. This will be a generated [[\MongoId]]
+	 * unless an "_id" was explicitly specified in the metadata.
+	 */
+	public function storeUploads($name, $metadata = [])
+	{
+		return $this->mongoCollection->storeUpload($name, $metadata);
+	}
+
+	/**
+	 * @param mixed $id _id of the file to find.
+	 * @return \MongoGridFSFile|null found file, or null if file does not exist
+	 */
+	public function get($id)
+	{
+		return $this->mongoCollection->get($id);
+	}
+
+	/**
+	 * @param mixed $id _id of the file to find.
+	 * @return boolean whether the operation was successful.
+	 */
+	public function delete($id)
+	{
+		$result = $this->mongoCollection->delete($id);
+		$this->tryResultError($result);
+		return true;
+	}
+}
\ No newline at end of file
diff --git a/tests/unit/extensions/mongo/ConnectionTest.php b/tests/unit/extensions/mongo/ConnectionTest.php
index b3252b9..04d5351 100644
--- a/tests/unit/extensions/mongo/ConnectionTest.php
+++ b/tests/unit/extensions/mongo/ConnectionTest.php
@@ -3,6 +3,7 @@
 namespace yiiunit\extensions\mongo;
 
 use yii\mongo\Collection;
+use yii\mongo\file\Collection as FileCollection;
 use yii\mongo\Connection;
 use yii\mongo\Database;
 
@@ -98,4 +99,21 @@ class ConnectionTest extends MongoTestCase
 		$collection2 = $connection->getCollection('customer', true);
 		$this->assertFalse($collection === $collection2);
 	}
+
+	/**
+	 * @depends testGetDefaultDatabase
+	 */
+	public function testGetFileCollection()
+	{
+		$connection = $this->getConnection();
+
+		$collection = $connection->getFileCollection('testfs');
+		$this->assertTrue($collection instanceof FileCollection);
+
+		$collection2 = $connection->getFileCollection('testfs');
+		$this->assertTrue($collection === $collection2);
+
+		$collection2 = $connection->getFileCollection('testfs', true);
+		$this->assertFalse($collection === $collection2);
+	}
 }
\ No newline at end of file
diff --git a/tests/unit/extensions/mongo/DatabaseTest.php b/tests/unit/extensions/mongo/DatabaseTest.php
index dbe05c0..e844d9d 100644
--- a/tests/unit/extensions/mongo/DatabaseTest.php
+++ b/tests/unit/extensions/mongo/DatabaseTest.php
@@ -3,6 +3,7 @@
 namespace yiiunit\extensions\mongo;
 
 use yii\mongo\Collection;
+use yii\mongo\file\Collection as FileCollection;
 
 /**
  * @group mongo
@@ -12,6 +13,7 @@ class DatabaseTest extends MongoTestCase
 	protected function tearDown()
 	{
 		$this->dropCollection('customer');
+		$this->dropFileCollection('testfs');
 		parent::tearDown();
 	}
 
@@ -32,6 +34,21 @@ class DatabaseTest extends MongoTestCase
 		$this->assertFalse($collection === $collectionRefreshed);
 	}
 
+	public function testGetFileCollection()
+	{
+		$database = $connection = $this->getConnection()->getDatabase();
+
+		$collection = $database->getFileCollection('testfs');
+		$this->assertTrue($collection instanceof FileCollection);
+		$this->assertTrue($collection->mongoCollection instanceof \MongoGridFS);
+
+		$collection2 = $database->getFileCollection('testfs');
+		$this->assertTrue($collection === $collection2);
+
+		$collectionRefreshed = $database->getFileCollection('testfs', true);
+		$this->assertFalse($collection === $collectionRefreshed);
+	}
+
 	public function testCommand()
 	{
 		$database = $connection = $this->getConnection()->getDatabase();
diff --git a/tests/unit/extensions/mongo/MongoTestCase.php b/tests/unit/extensions/mongo/MongoTestCase.php
index e344109..a14e27b 100644
--- a/tests/unit/extensions/mongo/MongoTestCase.php
+++ b/tests/unit/extensions/mongo/MongoTestCase.php
@@ -105,6 +105,21 @@ class MongoTestCase extends TestCase
 	}
 
 	/**
+	 * Drops the specified file collection.
+	 * @param string $name file collection name.
+	 */
+	protected function dropFileCollection($name)
+	{
+		if ($this->mongo) {
+			try {
+				$this->mongo->getFileCollection($name)->drop();
+			} catch (Exception $e) {
+				// shut down exception
+			}
+		}
+	}
+
+	/**
 	 * Finds all records in collection.
 	 * @param \yii\mongo\Collection $collection
 	 * @param array $condition
diff --git a/tests/unit/extensions/mongo/file/CollectionTest.php b/tests/unit/extensions/mongo/file/CollectionTest.php
new file mode 100644
index 0000000..bed7ab9
--- /dev/null
+++ b/tests/unit/extensions/mongo/file/CollectionTest.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace yiiunit\extensions\mongo\file;
+
+use yiiunit\extensions\mongo\MongoTestCase;
+
+class CollectionTest extends MongoTestCase
+{
+	protected function tearDown()
+	{
+		$this->dropFileCollection('fs');
+		parent::tearDown();
+	}
+
+	// Tests :
+
+	public function testFind()
+	{
+		$collection = $this->getConnection()->getFileCollection();
+		$cursor = $collection->find();
+		$this->assertTrue($cursor instanceof \MongoGridFSCursor);
+	}
+
+	public function testStoreFile()
+	{
+		$collection = $this->getConnection()->getFileCollection();
+
+		$filename = __FILE__;
+		$id = $collection->storeFile($filename);
+		$this->assertTrue($id instanceof \MongoId);
+
+		$files = $this->findAll($collection);
+		$this->assertEquals(1, count($files));
+
+		/** @var $file \MongoGridFSFile */
+		$file = $files[0];
+		$this->assertEquals($filename, $file->getFilename());
+		$this->assertEquals(file_get_contents($filename), $file->getBytes());
+	}
+
+	public function testStoreBytes()
+	{
+		$collection = $this->getConnection()->getFileCollection();
+
+		$bytes = 'Test file content';
+		$id = $collection->storeBytes($bytes);
+		$this->assertTrue($id instanceof \MongoId);
+
+		$files = $this->findAll($collection);
+		$this->assertEquals(1, count($files));
+
+		/** @var $file \MongoGridFSFile */
+		$file = $files[0];
+		$this->assertEquals($bytes, $file->getBytes());
+	}
+
+	/**
+	 * @depends testStoreBytes
+	 */
+	public function testGet()
+	{
+		$collection = $this->getConnection()->getFileCollection();
+
+		$bytes = 'Test file content';
+		$id = $collection->storeBytes($bytes);
+
+		$file = $collection->get($id);
+		$this->assertTrue($file instanceof \MongoGridFSFile);
+		$this->assertEquals($bytes, $file->getBytes());
+	}
+
+	/**
+	 * @depends testGet
+	 */
+	public function testDelete()
+	{
+		$collection = $this->getConnection()->getFileCollection();
+
+		$bytes = 'Test file content';
+		$id = $collection->storeBytes($bytes);
+
+		$this->assertTrue($collection->delete($id));
+
+		$file = $collection->get($id);
+		$this->assertNull($file);
+	}
+}
\ No newline at end of file