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.
Install from NuGet
To install MinIO .NET package, run the following command in Nuget Package Manager Console.
PM> Install-Package Minio
MinIO Client Example for ASP.NET
When 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));
}
}
<blockquote> NOTE: minio-dotnet requires .NET 6.x SDK to build on Linux. </blockquote>
MinIO Client Example
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);
}
Complete File Uploader Example
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);
}
}
}
}
Running MinIO Client Examples
On Windows
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.
$ 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.
