Download Zip File From S3 Bucket C# !!top!! May 2026

To download a ZIP file from an Amazon S3 bucket using C#, you can utilize the , specifically the AmazonS3Client or the higher-level TransferUtility class. Prerequisites Before writing code, ensure you have the following: AWS SDK for .NET : Install the AWSSDK.S3 NuGet package. AWS Credentials : Configure your access key and secret key.

: This standard .NET library is needed if you plan to extract the ZIP file after downloading. download zip file from s3 bucket c#

: For ZIP files larger than 100MB, it is safer to download them directly to disk using WriteResponseStreamToFileAsync rather than reading them into a MemoryStream to avoid OutOfMemoryException . To download a ZIP file from an Amazon

using Amazon.S3; using Amazon.S3.Model; public async Task DownloadFileToLocalAsync(string bucketName, string keyName, string localPath) { using (var client = new AmazonS3Client(RegionEndpoint.USEast1)) { var request = new GetObjectRequest { BucketName = bucketName, Key = keyName }; using (GetObjectResponse response = await client.GetObjectAsync(request)) { // This method writes the response stream directly to a file await response.WriteResponseStreamToFileAsync(localPath, false, CancellationToken.None); } } } Use code with caution. Extracting the Downloaded ZIP File : This standard

: If your application only needs the files inside the ZIP, remember to delete the temporary ZIP file after extraction to save disk space.