There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Use `PutBucketNotificationConfiguration` with an AWS SDK or CLI
<a name="s3_example_s3_PutBucketNotificationConfiguration_section"></a>

The following code examples show how to use `PutBucketNotificationConfiguration`.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code examples: 
+  [Process S3 event notifications](s3_example_s3_Scenario_ProcessS3EventNotification_section.md) 
+  [Send event notifications to EventBridge](s3_example_s3_Scenario_PutBucketNotificationConfiguration_section.md) 

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#### [ .NET ]

**SDK for .NET**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/S3#code-examples). 

```
    using System;
    using System.Collections.Generic;
    using System.Threading.Tasks;
    using Amazon.S3;
    using Amazon.S3.Model;

    /// <summary>
    /// This example shows how to enable notifications for an Amazon Simple
    /// Storage Service (Amazon S3) bucket.
    /// </summary>
    public class EnableNotifications
    {
        public static async Task Main()
        {
            const string bucketName = "amzn-s3-demo-bucket1";
            const string snsTopic = "arn:aws:sns:us-east-2:0123456789ab:bucket-notify";
            const string sqsQueue = "arn:aws:sqs:us-east-2:0123456789ab:Example_Queue";

            IAmazonS3 client = new AmazonS3Client(Amazon.RegionEndpoint.USEast2);
            await EnableNotificationAsync(client, bucketName, snsTopic, sqsQueue);
        }

        /// <summary>
        /// This method makes the call to the PutBucketNotificationAsync method.
        /// </summary>
        /// <param name="client">An initialized Amazon S3 client used to call
        /// the PutBucketNotificationAsync method.</param>
        /// <param name="bucketName">The name of the bucket for which
        /// notifications will be turned on.</param>
        /// <param name="snsTopic">The ARN for the Amazon Simple Notification
        /// Service (Amazon SNS) topic associated with the S3 bucket.</param>
        /// <param name="sqsQueue">The ARN of the Amazon Simple Queue Service
        /// (Amazon SQS) queue to which notifications will be pushed.</param>
        public static async Task EnableNotificationAsync(
            IAmazonS3 client,
            string bucketName,
            string snsTopic,
            string sqsQueue)
        {
            try
            {
                // The bucket for which we are setting up notifications.
                var request = new PutBucketNotificationRequest()
                {
                    BucketName = bucketName,
                };

                // Defines the topic to use when sending a notification.
                var topicConfig = new TopicConfiguration()
                {
                    Events = new List<EventType> { EventType.ObjectCreatedCopy },
                    Topic = snsTopic,
                };
                request.TopicConfigurations = new List<TopicConfiguration>
                {
                    topicConfig,
                };
                request.QueueConfigurations = new List<QueueConfiguration>
                {
                    new QueueConfiguration()
                    {
                        Events = new List<EventType> { EventType.ObjectCreatedPut },
                        Queue = sqsQueue,
                    },
                };

                // Now apply the notification settings to the bucket.
                PutBucketNotificationResponse response = await client.PutBucketNotificationAsync(request);
            }
            catch (AmazonS3Exception ex)
            {
                Console.WriteLine($"Error: {ex.Message}");
            }
        }
    }
```
+  For API details, see [PutBucketNotificationConfiguration](https://docs.aws.amazon.com/goto/DotNetSDKV3/s3-2006-03-01/PutBucketNotificationConfiguration) in *AWS SDK for .NET API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**To enable the specified notifications to a bucket**  
The following `put-bucket-notification-configuration` example applies a notification configuration to a bucket named `amzn-s3-demo-bucket`. The file `notification.json` is a JSON document in the current folder that specifies an SNS topic and an event type to monitor.  

```
aws s3api put-bucket-notification-configuration \
    --bucket amzn-s3-demo-bucket \
    --notification-configuration file://notification.json
```
Contents of `notification.json`:  

```
{
    "TopicConfigurations": [
        {
            "TopicArn": "arn:aws:sns:us-west-2:123456789012:s3-notification-topic",
            "Events": [
                "s3:ObjectCreated:*"
            ]
        }
    ]
}
```
The SNS topic must have an IAM policy attached to it that allows Amazon S3 to publish to it.  

```
{
    "Version":"2012-10-17",		 	 	 
    "Id": "example-ID",
    "Statement": [
        {
            "Sid": "example-statement-ID",
            "Effect": "Allow",
            "Principal": {
                "Service": "s3.amazonaws.com"
            },
            "Action": [
                "SNS:Publish"
            ],
            "Resource": "arn:aws:sns:us-west-2:123456789012::s3-notification-topic",
            "Condition": {
                "ArnLike": {
                    "aws:SourceArn": "arn:aws:s3:*:*:amzn-s3-demo-bucket"
                }
            }
        }
    ]
}
```
+  For API details, see [PutBucketNotificationConfiguration](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/s3api/put-bucket-notification-configuration.html) in *AWS CLI Command Reference*. 

------