tencent cloud

<PackageReference Include="Tencent.QCloud.Cos.Sdk" Version="5.4.*" />

dotnet add package Tencent.QCloud.Cos.Sdk

using COSXML;
using COSXML.Auth;
using COSXML.Model.Object;
using COSXML.Model.Bucket;
using COSXML.CosException;

// Initialize CosXmlConfig. 
string appid = "1250000000";// Set the APPID of your Tencent Cloud account.
string region = "COS_REGION"; // Set the default bucket region.
CosXmlConfig config = new CosXmlConfig.Builder()
  .IsHttps(true)  // Set HTTPS as default request method.
  .SetRegion(region)  // Set the default bucket region.
  .SetDebugLog(true)  // Display logs.
  .Build();  // Create a CosXmlConfig object.

public class CustomQCloudCredentialProvider : DefaultSessionQCloudCredentialProvider
{

  // Even if you do not already have a current temporary key, you can still use this method.
  public CustomQCloudCredentialProvider(): base(null, null, 0L, null) {
    ;
  }

  public override void Refresh()
  {
    //... First, request a temporary key from Tencent Cloud.
    string tmpSecretId = "SECRET_ID"; // SecretId of a temporary key. For more information about how to generate and use a temporary key, visit https://www.tencentcloud.com/document/product/436/14048.
    string tmpSecretKey = "SECRET_KEY"; // SecretKey of a temporary key. For more information about how to generate and use a temporary key, visit https://www.tencentcloud.com/document/product/436/14048.
    string tmpToken = "COS_TOKEN"; // Token of a temporary key. For more information about how to generate and use a temporary key, visit https://www.tencentcloud.com/document/product/436/14048.
    long tmpStartTime = 1546860702;// Start time in seconds of the temporary key’s validity period
    long tmpExpireTime = 1546862502;// End time in seconds of the temporary key’s validity period
    // Call the API to update the key
    SetQCloudCredential(tmpSecretId, tmpSecretKey, 
      String.Format("{0};{1}", tmpStartTime, tmpExpiredTime), tmpToken);
  }
}

QCloudCredentialProvider cosCredentialProvider = new CustomQCloudCredentialProvider();

string tmpSecretId = "SECRET_ID"; // “SecretId of the temporary key”;
string tmpSecretKey = "SECRET_KEY"; // “SecretKey of the temporary key”;
string tmpToken = "COS_TOKEN"; // “Token of the temporary key”;
long tmpExpireTime = 1546862502;// End time in seconds of the temporary key’s validity period
QCloudCredentialProvider cosCredentialProvider = new DefaultSessionQCloudCredentialProvider(
  tmpSecretId, tmpSecretKey, tmpExpireTime, tmpToken);

string secretId = Environment.GetEnvironmentVariable("SECRET_ID"); // User `SecretId`. We recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/32675.
string secretKey = Environment.GetEnvironmentVariable("SECRET_KEY"); // User `SecretKey`. We recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/32675.
long durationSecond = 600;          // Validity period of each request signature in seconds
QCloudCredentialProvider cosCredentialProvider = new DefaultQCloudCredentialProvider(
  secretId, secretKey, durationSecond);

CosXml cosXml = new CosXmlServer(config, cosCredentialProvider);

try
{
  String bucket = "examplebucket-1250000000"; // Format: BucketName-APPID
  PutBucketRequest request = new PutBucketRequest(bucket);
  // Execute the request
  PutBucketResult result = cosXml.PutBucket(request);
  // Request succeeded
  Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

try
{
  GetServiceRequest request = new GetServiceRequest();
  // Execute the request
  GetServiceResult result = cosXml.GetService(request);
  // Get the list of all buckets.
  List<ListAllMyBuckets.Bucket> allBuckets = result.listAllMyBuckets.buckets;
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

// Initialize TransferConfig
TransferConfig transferConfig = new TransferConfig();

// Initialize TransferManager
TransferManager transferManager = new TransferManager(cosXml, transferConfig);

String bucket = "examplebucket-1250000000"; // Bucket name in the format of BucketName-APPID
String cosPath = "exampleobject"; // The location identifier of the object in the bucket, i.e., the object key
String srcPath = @"temp-source-file";// Absolute path to the local file

// Upload an object
COSXMLUploadTask uploadTask = new COSXMLUploadTask(bucket, cosPath);
uploadTask.SetSrcPath(srcPath);

uploadTask.progressCallback = delegate (long completed, long total)
{
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
};

try {
  COSXML.Transfer.COSXMLUploadTask.UploadTaskResult result = await 
    transferManager.UploadAsync(uploadTask);
  Console.WriteLine(result.GetResultInfo());
  string eTag = result.eTag;
} catch (Exception e){
    Console.WriteLine("CosException: " + e);
}

try
{
  String bucket = "examplebucket-1250000000"; // Format: BucketName-APPID
  GetBucketRequest request = new GetBucketRequest(bucket);
  // Execute the request
  GetBucketResult result = cosXml.GetBucket(request);
  // Bucket information
  ListBucket info = result.listBucket;
  if (info.isTruncated) {
    // The data is truncated, and the next marker of the data is recorded.
    this.nextMarker = info.nextMarker;
  }
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

// Initialize TransferConfig
TransferConfig transferConfig = new TransferConfig();

// Initialize TransferManager
TransferManager transferManager = new TransferManager(cosXml, transferConfig);

String bucket = "examplebucket-1250000000"; // Bucket name in the format of BucketName-APPID
String cosPath = "exampleobject"; // The location identifier of the object in the bucket, i.e., the object key
string localDir = System.IO.Path.GetTempPath();// Local file directory
string localFileName = "my-local-temp-file"; // Filename of the local file

// Download an object
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(bucket, cosPath, 
  localDir, localFileName);

downloadTask.progressCallback = delegate (long completed, long total)
{
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
};

try {
  COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult result = await 
    transferManager.DownloadAsync(downloadTask);
  Console.WriteLine(result.GetResultInfo());
  string eTag = result.eTag;
} catch (Exception e){
    Console.WriteLine("CosException: " + e);
}

try
{
  string bucket = "examplebucket-1250000000"; // Bucket name in the format of BucketName-APPID
  string key = "exampleobject"; // Object key
  DeleteObjectRequest request = new DeleteObjectRequest(bucket, key);
  // Execute the request
  DeleteObjectResult result = cosXml.DeleteObject(request);
  // Request succeeded
  Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}