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
Namespace: Amazon.S3.Model
Assembly: AWSSDK.dll
Version: (assembly version)
Syntax
public class GetObjectMetadataRequest : AmazonWebServiceRequest IRequestEvents
The GetObjectMetadataRequest type exposes the following members
Constructors
| Name | Description | |
|---|---|---|
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GetObjectMetadataRequest() |
Properties
| Name | Type | Description | |
|---|---|---|---|
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BucketName | System.String | The name of the bucket that contains the object. |
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EtagToMatch | System.String | ETag to be matched as a pre-condition for returning the object, otherwise a PreconditionFailed signal is returned. |
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EtagToNotMatch | System.String | ETag that should not be matched as a pre-condition for returning the object, otherwise a PreconditionFailed signal is returned. |
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Key | System.String | The key of the object. |
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ModifiedSinceDate | System.DateTime | Returns the object only if it has been modified since the specified time, otherwise returns a PreconditionFailed. |
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ServerSideEncryptionCustomerMethod | Amazon.S3.ServerSideEncryptionCustomerMethod | The Server-side encryption algorithm to be used with the customer provided key. |
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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. |
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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. |
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UnmodifiedSinceDate | System.DateTime | Returns the object only if it has not been modified since the specified time, otherwise returns a PreconditionFailed. |
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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