MinIO Client SDK provides higher level APIs for MinIO and Amazon S3 compatible cloud storage services.For a complete list of APIs and examples, please take a look at the Dotnet Client API Reference.This document assumes that you have a working VisualStudio development environment.
To install MinIO .NET package, run the following command in Nuget Package Manager Console.
PM> Install-Package MinioWhen using AddMinio to add Minio to your ServiceCollection, Minio will also use any custom Logging providers you've added, like Serilog to output traces when enabled.
using Minio;
using Minio.DataModel.Args;
public static class Program
{
    var endpoint = "play.min.io";
    var accessKey = "minioadmin";
    var secretKey = "minioadmin";
    public static void Main(string[] args)
    {
        var builder = WebApplication.CreateBuilder();
        // Add Minio using the default endpoint
        builder.Services.AddMinio(accessKey, secretKey);
        // Add Minio using the custom endpoint and configure additional settings for default MinioClient initialization
        builder.Services.AddMinio(configureClient => configureClient
            .WithEndpoint(endpoint)
            .WithCredentials(accessKey, secretKey)
	    .Build());
        // NOTE: SSL and Build are called by the build-in services already.
        var app = builder.Build();
        app.Run();
    }
}
[ApiController]
public class ExampleController : ControllerBase
{
    private readonly IMinioClient minioClient;
    public ExampleController(IMinioClient minioClient)
    {
        this.minioClient = minioClient;
    }
    [HttpGet]
    [ProducesResponseType(typeof(string), StatusCodes.Status200OK)]
    public async Task<IActionResult> GetUrl(string bucketID)
    {
        return Ok(await minioClient.PresignedGetObjectAsync(new PresignedGetObjectArgs()
                .WithBucket(bucketID))
            .ConfigureAwait(false));
    }
}
[ApiController]
public class ExampleFactoryController : ControllerBase
{
    private readonly IMinioClientFactory minioClientFactory;
    public ExampleFactoryController(IMinioClientFactory minioClientFactory)
    {
        this.minioClientFactory = minioClientFactory;
    }
    [HttpGet]
    [ProducesResponseType(typeof(string), StatusCodes.Status200OK)]
    public async Task<IActionResult> GetUrl(string bucketID)
    {
        var minioClient = minioClientFactory.CreateClient(); //Has optional argument to configure specifics
        return Ok(await minioClient.PresignedGetObjectAsync(new PresignedGetObjectArgs()
                .WithBucket(bucketID))
            .ConfigureAwait(false));
    }
}To connect to an Amazon S3 compatible cloud storage service, you need the following information
| Variable name | Description | 
|---|---|
| endpoint | <Domain-name> or <ip:port> of your object storage | 
| accessKey | User ID that uniquely identifies your account | 
| secretKey | Password to your account | 
| secure | boolean value to enable/disable HTTPS support (default=true) | 
The following examples uses a freely hosted public MinIO service "play.min.io" for development purposes.
using Minio;
var endpoint = "play.min.io";
var accessKey = "minioadmin";
var secretKey = "minioadmin";
var secure = true;
// Initialize the client with access credentials.
private static IMinioClient minio = new MinioClient()
                                    .WithEndpoint(endpoint)
                                    .WithCredentials(accessKey, secretKey)
                                    .WithSSL(secure)
                                    .Build();
// Create an async task for listing buckets.
var getListBucketsTask = await minio.ListBucketsAsync().ConfigureAwait(false);
// Iterate over the list of buckets.
foreach (var bucket in getListBucketsTask.Result.Buckets)
{
    Console.WriteLine(bucket.Name + " " + bucket.CreationDateDateTime);
}This example program connects to an object storage server, creates a bucket and uploads a file to the bucket. To run the following example, click on [Link] and start the project
using System;
using Minio;
using Minio.Exceptions;
using Minio.DataModel;
using Minio.Credentials;
using Minio.DataModel.Args;
using System.Threading.Tasks;
namespace FileUploader
{
    class FileUpload
    {
        static void Main(string[] args)
        {
            var endpoint  = "play.min.io";
            var accessKey = "minioadmin";
            var secretKey = "minioadmin";
            try
            {
                var minio = new MinioClient()
                                    .WithEndpoint(endpoint)
                                    .WithCredentials(accessKey, secretKey)
                                    .WithSSL()
                                    .Build();
                FileUpload.Run(minio).Wait();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.ReadLine();
        }
        // File uploader task.
        private async static Task Run(IMinioClient minio)
        {
            var bucketName = "mymusic";
            var location   = "us-east-1";
            var objectName = "golden-oldies.zip";
            var filePath = "C:\\Users\\username\\Downloads\\golden_oldies.mp3";
            var contentType = "application/zip";
            try
            {
                // Make a bucket on the server, if not already present.
                var beArgs = new BucketExistsArgs()
                    .WithBucket(bucketName);
                bool found = await minio.BucketExistsAsync(beArgs).ConfigureAwait(false);
                if (!found)
                {
                    var mbArgs = new MakeBucketArgs()
                        .WithBucket(bucketName);
                    await minio.MakeBucketAsync(mbArgs).ConfigureAwait(false);
                }
                // Upload a file to bucket.
                var putObjectArgs = new PutObjectArgs()
                    .WithBucket(bucketName)
                    .WithObject(objectName)
                    .WithFileName(filePath)
                    .WithContentType(contentType);
                await minio.PutObjectAsync(putObjectArgs).ConfigureAwait(false);
                Console.WriteLine("Successfully uploaded " + objectName );
            }
            catch (MinioException e)
            {
                Console.WriteLine("File Upload Error: {0}", e.Message);
            }
        }
    }
}- 
Clone this repository and open the Minio.Sln in Visual Studio 2017. 
- 
Enter your credentials and bucket name, object name etc. in Minio.Examples/Program.cs 
- 
Uncomment the example test cases such as below in Program.cs to run an example. 
  //Cases.MakeBucket.Run(minioClient, bucketName).Wait();- Run the Minio.Client.Examples project from Visual Studio
NOTE: minio-dotnet requires .NET 6.x SDK to build on Linux.
- Install .Net SDK
wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
rm packages-microsoft-prod.deb
sudo apt-get update; \
  sudo apt-get install -y apt-transport-https && \
  sudo apt-get update && \
  sudo apt-get install -y dotnet-sdk-6.0
- Clone this project.
$ git clone https://github.com/minio/minio-dotnet && cd minio-dotnet
- Enter your credentials and bucket name, object name etc. in Minio.Examples/Program.cs Uncomment the example test cases such as below in Program.cs to run an example.
  //Cases.MakeBucket.Run(minioClient, bucketName).Wait();dotnet build --configuration Release --no-restore
dotnet pack ./Minio/Minio.csproj --no-build --configuration Release --output ./artifacts
dotnet test ./Minio.Tests/Minio.Tests.csproj
- MakeBucket.cs
- ListBuckets.cs
- BucketExists.cs
- RemoveBucket.cs
- ListObjects.cs
- ListIncompleteUploads.cs
- ListenBucketNotifications.cs