try
{
  // Bucket name in the format of bucketname-APPID. You can get APPID by referring to https://console.tencentcloud.com/developer.
  string bucket = "examplebucket-1250000000";
  PutBucketACLRequest request = new PutBucketACLRequest(bucket);
  // Set private read and write permissions
  request.SetCosACL(CosACL.Private);
  // Grant read permission for account 1131975903
  COSXML.Model.Tag.GrantAccount readAccount = new COSXML.Model.Tag.GrantAccount();
  readAccount.AddGrantAccount("1131975903", "1131975903");
  request.SetXCosGrantRead(readAccount);
  // Execute the request
  PutBucketACLResult result = cosXml.PutBucketACL(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
{
  // Bucket name in the format of bucketname-APPID. You can get APPID by referring to https://console.tencentcloud.com/developer.
  string bucket = "examplebucket-1250000000";
  GetBucketACLRequest request = new GetBucketACLRequest(bucket);
  // Execute the request
  GetBucketACLResult result = cosXml.GetBucketACL(request);
  // Bucket ACL information
  AccessControlPolicy acl = result.accessControlPolicy;
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

// To avoid reaching the upper limit of 1,000 bucket ACLs,
// we do not recommend setting an object ACL for a single object unless absolutely necessary. The object will inherit bucket permissions by default.
try
{
  // Bucket name in the format of bucketname-APPID. You can get APPID by referring to https://console.tencentcloud.com/developer.
  string bucket = "examplebucket-1250000000";
  string key = "exampleobject"; // Object key
  PutObjectACLRequest request = new PutObjectACLRequest(bucket, key);
  // Set private read and write permissions 
  request.SetCosACL(CosACL.Private);
  // Grant read permission for account 1131975903 
  COSXML.Model.Tag.GrantAccount readAccount = new COSXML.Model.Tag.GrantAccount();
  readAccount.AddGrantAccount("1131975903", "1131975903");
  request.SetXCosGrantRead(readAccount);
  // Execute the request
  PutObjectACLResult result = cosXml.PutObjectACL(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
{
  // Bucket name in the format of bucketname-APPID. You can get APPID by referring to https://console.tencentcloud.com/developer.
  string bucket = "examplebucket-1250000000";
  string key = "exampleobject"; // Object key
  GetObjectACLRequest request = new GetObjectACLRequest(bucket, key);
  // Execute the request
  GetObjectACLResult result = cosXml.GetObjectACL(request);
  // Object ACL information
  AccessControlPolicy acl = result.accessControlPolicy;
}
catch (COSXML.CosException.CosClientException clientEx)
{
  // Request failed
  Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
  // Request failed
  Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}