DeleteObjectVersion.cs

// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-s3-developer-guide/blob/master/LICENSE-SAMPLECODE.)

using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Threading.Tasks;

namespace Amazon.DocSamples.S3
{
    class DeleteObjectVersion
    {
        private const string bucketName = "*** versioning-enabled bucket name ***";
        private const string keyName = "*** Object Key Name ***";
        // Specify your bucket region (an example region is shown).
        private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2;
        private static IAmazonS3 client;

        public static void Main()
        {
            client = new AmazonS3Client(bucketRegion);
            CreateAndDeleteObjectVersionAsync().Wait();
        }

        private static async Task CreateAndDeleteObjectVersionAsync()
        {
            try
            {
                // Add a sample object. 
                string versionID = await PutAnObject(keyName);

                // Delete the object by specifying an object key and a version ID.
                DeleteObjectRequest request = new DeleteObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName,
                    VersionId = versionID
                };
                Console.WriteLine("Deleting an object");
                await client.DeleteObjectAsync(request);
            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine("Error encountered on server. Message:'{0}' when writing an object", e.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine("Unknown encountered on server. Message:'{0}' when writing an object", e.Message);
            }
        }

        static async Task<string> PutAnObject(string objectKey)
        {
            PutObjectRequest request = new PutObjectRequest
            {
                BucketName = bucketName,
                Key = objectKey,
                ContentBody = "This is the content body!"
            };
            PutObjectResponse response = await client.PutObjectAsync(request);
            return response.VersionId;
        }
    }
}