Torch Object Storage
Torch Object Storage
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- Documentation
Torch Object StorageSDK Reference.NETQuick Start (.NET SDK)
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Quick Start (.NET SDK)
Copy pageDownload PDFQuick Start (.NET SDK)
This document describes how to quickly perform common operations using the TOS .NET SDK, including creating buckets, uploading objects, downloading objects, listing objects, and deleting objects.
Prerequisites
Creating a Bucket
A bucket is the globally unique namespace in TOS, functioning as a container for data and used to store object data. The following code demonstrates how to use the CreateBucket method to create a new storage bucket:
tip
using System;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "*** Provide your endpoint ***";
var region = "*** Provide your region ***";
var bucketName = "*** Provide your bucket name ***";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var createBucketInput = new CreateBucketInput()
{
Bucket = bucketName
};
var createBucketOutput = client.CreateBucket(createBucketInput);
Console.WriteLine("Create bucket succeeded, request id {0} ", createBucketOutput.RequestID);
Console.WriteLine("Create bucket succeeded, status code {0} ", createBucketOutput.StatusCode);
}
catch (TosServerException ex)
{
Console.WriteLine("Create bucket failed, request id {0}", ex.RequestID);
Console.WriteLine("Create bucket failed, status code {0}", ex.StatusCode);
Console.WriteLine("Create bucket failed, response error code {0}", ex.Code);
Console.WriteLine("Create bucket failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Create bucket failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Create bucket failed, {0}", ex.Message);
}
}
}
}
Uploads an object.
After the bucket is successfully created, objects can be uploaded to the bucket. The following code demonstrates how to upload a string to an already created bucket.
tip
using System;
using System.IO;
using System.Text;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "*** Provide your object key ***";
var objectContent = "object content";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var binaryData = Encoding.UTF8.GetBytes(objectContent);
using (var requestContent = new MemoryStream(binaryData))
{
var putObjectInput = new PutObjectInput
{
Bucket = bucketName,
Key = objectKey,
Content = requestContent
};
var putObjectOutput = client.PutObject(putObjectInput);
Console.WriteLine("Put object succeeded, ETag: {0} ", putObjectOutput.ETag);
}
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Download Object
The following code demonstrates how to download an existing object from a bucket.
tip
using System;
using System.IO;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "*** Provide your object key ***";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var getObjectInput = new GetObjectInput()
{
Bucket = bucketName,
Key = objectKey,
};
var putObjectOutput = client.GetObject(getObjectInput);
Console.WriteLine("Get object succeeded, requestId: {0} ", putObjectOutput.RequestID);
Console.WriteLine("Get object succeeded, ETag: {0} ", putObjectOutput.ETag);
Console.WriteLine("Get object succeeded, status code: {0} ", putObjectOutput.StatusCode);
using (var reader = new StreamReader(putObjectOutput.Content))
{
var body = reader.ReadToEnd();
Console.WriteLine("Get object succeeded, body: {0} ", body);
}
}
catch (TosServerException ex)
{
Console.WriteLine("Get object failed, request id {0}", ex.RequestID);
Console.WriteLine("Get object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Get object failed, response error code {0}", ex.Code);
Console.WriteLine("Get object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Get object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Get object failed, {0}", ex.Message);
}
}
}
}
Enumeration of Objects
The following code demonstrates how to list the objects already in the bucket.
tip
using System;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var listObjectsInput = new ListObjectsInput()
{
Bucket = bucketName,
};
var listObjectsOutput = client.ListObjects(listObjectsInput);
Console.WriteLine("List object Request id, {0}", listObjectsOutput.RequestID);
if (!listObjectsOutput.IsTruncated) {
listObjectsInput.Marker = listObjectsOutput.NextMarker;
listObjectsOutput = client.ListObjects(listObjectsInput);
Console.WriteLine("List object Request id, {0}", listObjectsOutput.RequestID);
}
}
catch (TosServerException ex)
{
Console.WriteLine("List object failed, request Id {0}", ex.RequestID);
Console.WriteLine("List object failed, status code {0}", ex.StatusCode);
Console.WriteLine("List object failed, response error code {0}", ex.Code);
Console.WriteLine("List object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("List object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("List object failed, {0}", ex.Message);
}
}
}
}
When you delete an object
The following code demonstrates how to delete an existing object from a bucket.
tip
using System;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "*** Provide your object key ***";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var deleteObjectInput = new DeleteObjectInput()
{
Bucket = bucketName,
Key = objectKey
};
var deleteObjectOutput = client.DeleteObject(deleteObjectInput);
Console.WriteLine("Delete object Request id, {0}", deleteObjectOutput.RequestID);
Console.WriteLine("Delete object response status code, {0}", deleteObjectOutput.StatusCode);
}
catch (TosServerException ex)
{
Console.WriteLine("Delete object failed, request id {0}", ex.RequestID);
Console.WriteLine("Delete object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Delete object failed, response error code {0}", ex.Code);
Console.WriteLine("Delete object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Delete object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Delete object failed, {0}", ex.Message);
}
}
}
}
Last updated: 2025.09.23 11:28:04
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