UploadObjSingleOpNET.md

Upload an object using the AWS SDK for .NET

Example
The following C# code example creates two objects with two PutObjectRequest requests:

• The first PutObjectRequest request saves a text string as sample object data. It also specifies the bucket and object key names.
• The second PutObjectRequest request uploads a file by specifying the file name. This request also specifies the ContentType header and optional object metadata (a title). For instructions on how to create and test a working sample, see Running the Amazon S3 .NET Code Examples.

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

namespace Amazon.DocSamples.S3
{
    class UploadObjectTest
    {
        private const string bucketName = "*** bucket name ***";
        // For simplicity the example creates two objects from the same file.
        // You specify key names for these objects.
        private const string keyName1 = "*** key name for first object created ***";
        private const string keyName2 = "*** key name for second object created ***";
        private const string filePath = @"*** file path ***";
        private static readonly RegionEndpoint bucketRegion = RegionEndpoint.EUWest1; 

        private static IAmazonS3 client;

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

        static async Task WritingAnObjectAsync()
        {
            try
            {
                // 1. Put object-specify only key name for the new object.
                var putRequest1 = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName1,
                    ContentBody = "sample text"
                };

                PutObjectResponse response1 = await client.PutObjectAsync(putRequest1);

                // 2. Put the object-set ContentType and add metadata.
                var putRequest2 = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName2,
                    FilePath = filePath,
                    ContentType = "text/plain"
                };
                
                putRequest2.Metadata.Add("x-amz-meta-title", "someTitle");
                PutObjectResponse response2 = await client.PutObjectAsync(putRequest2);
            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine(
                        "Error encountered ***. 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);
            }
        }
    }
}