Get started with tags for Amazon S3 objects using an Amazon SDK - Amazon Simple Storage Service
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Get started with tags for Amazon S3 objects using an Amazon SDK

The following code example shows how to get started with tags for Amazon S3 objects.

.NET
Amazon SDK for .NET
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

using System; using System.Collections.Generic; using System.Threading.Tasks; using Amazon; using Amazon.S3; using Amazon.S3.Model; public class ObjectTag { public static async Task Main() { string bucketName = "doc-example-bucket"; string keyName = "newobject.txt"; string filePath = @"*** file path ***"; // Specify your bucket region (an example region is shown). RegionEndpoint bucketRegion = RegionEndpoint.USWest2; var client = new AmazonS3Client(bucketRegion); await PutObjectsWithTagsAsync(client, bucketName, keyName, filePath); } /// <summary> /// This method uploads an object with tags. It then shows the tag /// values, changes the tags, and shows the new tags. /// </summary> /// <param name="client">The Initialized Amazon S3 client object used /// to call the methods to create and change an objects tags.</param> /// <param name="bucketName">A string representing the name of the /// bucket where the object will be stored.</param> /// <param name="keyName">A string representing the key name of the /// object to be tagged.</param> /// <param name="filePath">The directory location and file name of the /// object to be uploaded to the Amazon S3 bucket.</param> public static async Task PutObjectsWithTagsAsync(IAmazonS3 client, string bucketName, string keyName, string filePath) { try { // Create an object with tags. var putRequest = new PutObjectRequest { BucketName = bucketName, Key = keyName, FilePath = filePath, TagSet = new List<Tag> { new Tag { Key = "Keyx1", Value = "Value1" }, new Tag { Key = "Keyx2", Value = "Value2" }, }, }; PutObjectResponse response = await client.PutObjectAsync(putRequest); // Now retrieve the new object's tags. GetObjectTaggingRequest getTagsRequest = new() { BucketName = bucketName, Key = keyName, }; GetObjectTaggingResponse objectTags = await client.GetObjectTaggingAsync(getTagsRequest); // Display the tag values. objectTags.Tagging .ForEach(t => Console.WriteLine($"Key: {t.Key}, Value: {t.Value}")); Tagging newTagSet = new() { TagSet = new List<Tag> { new Tag { Key = "Key3", Value = "Value3" }, new Tag { Key = "Key4", Value = "Value4" }, }, }; PutObjectTaggingRequest putObjTagsRequest = new () { BucketName = bucketName, Key = keyName, Tagging = newTagSet, }; PutObjectTaggingResponse response2 = await client.PutObjectTaggingAsync(putObjTagsRequest); // Retrieve the tags again and show the values. GetObjectTaggingRequest getTagsRequest2 = new() { BucketName = bucketName, Key = keyName, }; GetObjectTaggingResponse objectTags2 = await client.GetObjectTaggingAsync(getTagsRequest2); objectTags2.Tagging .ForEach(t => Console.WriteLine($"Key: {t.Key}, Value: {t.Value}")); } catch (AmazonS3Exception ex) { Console.WriteLine( $"Error: '{ex.Message}'"); } } }

For a complete list of Amazon SDK developer guides and code examples, see Using this service with an Amazon SDK. This topic also includes information about getting started and details about previous SDK versions.