ListObjectsRequest Class | AWS SDK for .NET V3

Container for the parameters to the ListObjects operation.

This operation is not supported by directory buckets.

Returns some or all (up to 1,000) of the objects in a bucket. You can use the request parameters as selection criteria to return a subset of the objects in a bucket. A 200 OK response can contain valid or invalid XML. Be sure to design your application to parse the contents of the response and handle it appropriately.

This action has been revised. We recommend that you use the newer version, ListObjectsV2, when developing applications. For backward compatibility, Amazon S3 continues to support ListObjects.

The following operations are related to ListObjects:

Inheritance Hierarchy

System.Object
Amazon.Runtime.AmazonWebServiceRequest
Amazon.S3.Model.ListObjectsRequest

Namespace: Amazon.S3.Model
Assembly: AWSSDK.S3.dll
Version: 3.x.y.z

Syntax

public class ListObjectsRequest : AmazonWebServiceRequest
         IAmazonWebServiceRequest

The ListObjectsRequest type exposes the following members

Constructors

	Name	Description
	ListObjectsRequest()

Properties

Name	Type	Description
BucketName	System.String	Gets and sets the property BucketName. The name of the bucket containing the objects. Directory buckets - When you use this operation with a directory bucket, you must use virtual-hosted-style requests in the format `Bucket_name.s3express-az_id.region.amazonaws.com`. Path-style requests are not supported. Directory bucket names must be unique in the chosen Availability Zone. Bucket names must follow the format `bucket_base_name--az-id--x-s3` (for example, `DOC-EXAMPLE-BUCKET--usw2-az1--x-s3`). For information about bucket naming restrictions, see Directory bucket naming rules in the Amazon S3 User Guide. Access points - When you use this action with an access point, you must provide the alias of the access point in place of the bucket name or specify the access point ARN. When using the access point ARN, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using access points in the Amazon S3 User Guide. Access points and Object Lambda access points are not supported by directory buckets. S3 on Outposts - When you use this action with Amazon S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form `AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com`. When you use this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts access point ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see What is S3 on Outposts? in the Amazon S3 User Guide.
Delimiter	System.String	A delimiter is a character that you use to group keys.
Encoding	Amazon.S3.EncodingType	Encoding type used by Amazon S3 to encode the object keys in the response. Responses are encoded only in UTF-8. An object key can contain any Unicode character. However, the XML 1.0 parser can't parse certain characters, such as characters with an ASCII value from 0 to 10. For characters that aren't supported in XML 1.0, you can add this parameter to request that Amazon S3 encode the keys in the response. For more information about characters to avoid in object key names, see Object key naming guidelines. When using the URL encoding type, non-ASCII characters that are used in an object's key name will be percent-encoded according to UTF-8 code values. For example, the object `test_file(3).png` will appear as `test_file%283%29.png`.
ExpectedBucketOwner	System.String	Gets and sets the property ExpectedBucketOwner. The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code `403 Forbidden` (access denied).
Marker	System.String	Gets and sets the property Marker. Marker is where you want Amazon S3 to start listing from. Amazon S3 starts listing after this specified key. Marker can be any key in the bucket.
MaxKeys	System.Int32	Gets and sets the property MaxKeys. Sets the maximum number of keys returned in the response. By default the action returns up to 1,000 key names. The response might contain fewer keys but will never contain more.
OptionalObjectAttributes	System.Collections.Generic.List<System.String>	Gets and sets the property OptionalObjectAttributes. Specifies the optional fields that you want returned in the response. Fields that you do not specify are not returned.
Prefix	System.String	Limits the response to keys that begin with the specified prefix.
RequestPayer	Amazon.S3.RequestPayer	Gets and sets the property RequestPayer. Confirms that the requester knows that she or he will be charged for the list objects request. Bucket owners need not specify this parameter in their requests.

Examples

This example shows how to list all objects in a bucket.

ListObjects sample


// Create a client
AmazonS3Client client = new AmazonS3Client();

// List all objects
ListObjectsRequest listRequest = new ListObjectsRequest
{
    BucketName = "SampleBucket",
};

ListObjectsResponse listResponse;
do
{
    // Get a list of objects
    listResponse = client.ListObjects(listRequest);
    foreach (S3Object obj in listResponse.S3Objects)
    {
        Console.WriteLine("Object - " + obj.Key);
        Console.WriteLine(" Size - " + obj.Size);
        Console.WriteLine(" LastModified - " + obj.LastModified);
        Console.WriteLine(" Storage class - " + obj.StorageClass);
    }

    // Set the marker property
    listRequest.Marker = listResponse.NextMarker;
} while (listResponse.IsTruncated);

Version Information

.NET:
Supported in: 8.0 and newer, Core 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5 and newer, 3.5