Object Storage Service:Quick start (C# SDK V1)

using Aliyun.OSS;
// Set yourEndpoint to the endpoint of the region in which the bucket is located.
var endpoint = "yourEndpoint";
// Set yourRegion to the ID of the region in which the bucket is located.
var region = "yourRegion";
// Obtain access credentials from environment variables.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "yourBucketName";
// Create a ClientConfiguration instance and modify the default parameters as required.
var conf = new ClientConfiguration();
// Specify the V4 signature algorithm.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
    // Create a bucket.
    var bucket = client.CreateBucket(bucketName);
    Console.WriteLine("Create bucket succeeded, {0} ", bucket.Name);
}
catch (Exception ex)
{
    Console.WriteLine("Create bucket failed, {0}", ex.Message);
}

using Aliyun.OSS;
// Set yourEndpoint to the endpoint of the region in which the bucket is located.
var endpoint = "yourEndpoint";
// Set yourRegion to the ID of the region in which the bucket is located.
var region = "yourRegion";
// Obtain access credentials from environment variables.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Specify the full path of the object, which cannot contain the bucket name.
var objectName = "exampledir/exampleobject.txt";
// Specify the full path of the local file to upload.
var localFilename = "D:\\localpath\\examplefile.txt";
// Create a ClientConfiguration instance and modify the default parameters as required.
var conf = new ClientConfiguration();
// Specify the V4 signature algorithm.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
    // Upload the object.
    var result = client.PutObject(bucketName, objectName, localFilename);
    Console.WriteLine("Put object succeeded, ETag: {0} ", result.ETag);
}
catch (Exception ex)
{
    Console.WriteLine("Put object failed, {0}", ex.Message);
}

using Aliyun.OSS;
using Aliyun.OSS.Common;
// Set yourEndpoint to the endpoint of the region in which the bucket is located.
var endpoint = "yourEndpoint";
// Set yourRegion to the ID of the region in which the bucket is located.
var region = "yourRegion";
// Obtain access credentials from environment variables.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Specify the full path of the object, which cannot contain the bucket name.
var objectName = "exampledir/exampleobject.txt";
// Specify the full path of the local file to which the object is downloaded.
var downloadFilename = "D:\\localpath\\examplefile.txt";
// Create a ClientConfiguration instance and modify the default parameters as required.
var conf = new ClientConfiguration();
// Specify the V4 signature algorithm.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{   
    // Download the object.
    var result = client.GetObject(bucketName, objectName);
    using (var requestStream = result.Content)
    {
        using (var fs = File.Open(downloadFilename, FileMode.OpenOrCreate))
        {
            int length = 4 * 1024;
            var buf = new byte[length];
            do
            {
                length = requestStream.Read(buf, 0, length);
                fs.Write(buf, 0, length);
            } while (length != 0);
        }
    }
    Console.WriteLine("Get object succeeded");
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
    Console.WriteLine("Failed with error info: {0}", ex.Message);
}

using Aliyun.OSS;
using Aliyun.OSS.Common;
// Set yourEndpoint to the endpoint of the region in which the bucket is located.
var endpoint = "yourEndpoint";
// Set yourRegion to the ID of the region in which the bucket is located.
var region = "yourRegion";
// Obtain access credentials from environment variables.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Create a ClientConfiguration instance and modify the default parameters as required.
var conf = new ClientConfiguration();
// Specify the V4 signature algorithm.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
    var objects = new List<string>();
    ObjectListing result = null;
    string nextMarker = string.Empty;
    do
    {
        var listObjectsRequest = new ListObjectsRequest(bucketName)
        {
            Marker = nextMarker,
        };
        // List the objects.
        result = client.ListObjects(listObjectsRequest);
        foreach (var summary in result.ObjectSummaries)
        {
            Console.WriteLine(summary.Key);
            objects.Add(summary.Key);
        }
        nextMarker = result.NextMarker;
    } while (result.IsTruncated);
    Console.WriteLine("List objects of bucket:{0} succeeded ", bucketName);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
    Console.WriteLine("Failed with error info: {0}", ex.Message);
}

using Aliyun.OSS;
// Set yourEndpoint to the endpoint of the region in which the bucket is located.
var endpoint = "yourEndpoint";
// Set yourRegion to the ID of the region in which the bucket is located.
var region = "yourRegion";
// Obtain access credentials from environment variables.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Specify the full path of the object, which cannot contain the bucket name.
var objectName = "exampledir/exampleobject.txt";
// Create a ClientConfiguration instance and modify the default parameters as required.
var conf = new ClientConfiguration();
// Specify the V4 signature algorithm.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
    // Delete the object.
    client.DeleteObject(bucketName, objectName);
    Console.WriteLine("Delete object succeeded");
}
catch (Exception ex)
{
    Console.WriteLine("Delete object failed, {0}", ex.Message);
}