Object Storage Service:Baixar um objeto para a memória (C# SDK V2)

using OSS = AlibabaCloud.OSS.V2; // Create an alias for Alibaba Cloud OSS SDK to simplify subsequent use.

var region = "cn-hangzhou"; // Required. Specify the region where the bucket is located. Example: cn-hangzhou for China (Hangzhou).
var bucket = "your bucket name";  // Required. Specify the name of the destination bucket. 
var endpoint = null as string;  // Optional. Specify the domain name used to access OSS. Example: https://oss-cn-hangzhou.aliyuncs.com for China (Hangzhou).
var key = "your object key"; // Required. Specify the name of the object to be downloaded. Format: folder/objectName.

// Load the default configurations of OSS SDK. The configurations automatically read credential information (such as AccessKey) from environment variables.
var cfg = OSS.Configuration.LoadDefault();
// Explicitly set the use of environment variables to obtain credentials for identity verification. Format: OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET.
cfg.CredentialsProvider = new OSS.Credentials.EnvironmentVariableCredentialsProvider();
// Set the region of the bucket for the configuration.
cfg.Region = region;   
// If an endpoint is specified, overwrite the default endpoint. 
if(endpoint != null)
{
    cfg.Endpoint = endpoint;
} 

// Create an OSS client instance based on the configuration information.
using var client = new OSS.Client(cfg); 

// Call the GetObjectAsync method. By default, the object is obtained in streaming mode. In this case, only the response header is downloaded, and the content is returned as a stream.
var result = await client.GetObjectAsync(new OSS.Models.GetObjectRequest()
{
    Bucket = bucket,
    Key = key,
});

// To read all the content into the memory at a time, you can use this reload method.
//var result = await client.GetObjectAsync(new OSS.Models.GetObjectRequest() {
//    Bucket = bucket,
//    Key = key,
//},System.Net.Http.HttpCompletionOption.ResponseContentRead);

// Obtain the content stream of the response.
using var body = result.Body;
// Read data.
var reader = new StreamReader(body!);
// Read all content from the stream as a string (the content is loaded into the memory).
var data = reader.ReadToEnd();

// Print the result information. 
Console.WriteLine("GetObject done");  // A message indicating that the operation is complete.
Console.WriteLine($"StatusCode: {result.StatusCode}");  // HTTP status code.
Console.WriteLine($"RequestId: {result.RequestId}");  // RequestId, which is used for troubleshooting in Alibaba Cloud.
Console.WriteLine("Response Headers:");  // Response header information.
result.Headers.ToList().ForEach(x => Console.WriteLine(x.Key + " : " + x.Value));  // Traverse and print all response headers.