AWS SDK Version 2 for .NET
API Reference

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.NET Framework 3.5
 
Container for the parameters to the HeadObject operation.

The HEAD operation retrieves metadata from an object without returning the object itself. This operation is useful if you''re only interested in an object''s metadata. To use HEAD, you must have READ access to the object.

Inheritance Hierarchy

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

Namespace: Amazon.S3.Model
Assembly: AWSSDK.dll
Version: (assembly version)

Syntax

C#
public class GetObjectMetadataRequest : AmazonWebServiceRequest
         IRequestEvents

The GetObjectMetadataRequest type exposes the following members

Constructors

NameDescription
Public Method GetObjectMetadataRequest()

Properties

NameTypeDescription
Public Property BucketName System.String The name of the bucket that contains the object.
Public Property EtagToMatch System.String ETag to be matched as a pre-condition for returning the object, otherwise a PreconditionFailed signal is returned.
Public Property EtagToNotMatch System.String ETag that should not be matched as a pre-condition for returning the object, otherwise a PreconditionFailed signal is returned.
Public Property Key System.String The key of the object.
Public Property ModifiedSinceDate System.DateTime Returns the object only if it has been modified since the specified time, otherwise returns a PreconditionFailed.
Public Property ServerSideEncryptionCustomerMethod Amazon.S3.ServerSideEncryptionCustomerMethod The Server-side encryption algorithm to be used with the customer provided key.
Public Property ServerSideEncryptionCustomerProvidedKey System.String The base64-encoded encryption key for Amazon S3 to use to decrypt the object

Using the encryption key you provide as part of your request Amazon S3 manages both the encryption, as it writes to disks, and decryption, when you access your objects. Therefore, you don't need to maintain any data encryption code. The only thing you do is manage the encryption keys you provide.

When you retrieve an object, you must provide the same encryption key as part of your request. Amazon S3 first verifies the encryption key you provided matches, and then decrypts the object before returning the object data to you.

Important: Amazon S3 does not store the encryption key you provide.

Public Property ServerSideEncryptionCustomerProvidedKeyMD5 System.String The MD5 of the customer encryption key specified in the ServerSideEncryptionCustomerProvidedKey property. The MD5 is base 64 encoded. This field is optional, the SDK will calculate the MD5 if this is not set.
Public Property UnmodifiedSinceDate System.DateTime Returns the object only if it has not been modified since the specified time, otherwise returns a PreconditionFailed.
Public Property VersionId System.String VersionId used to reference a specific version of the object.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8

.NET for Windows Phone:
Supported in: Windows Phone 8.1, Windows Phone 8