Performing an Asynchronous Upload

If you have any questions during the development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the API Reference.

You can call ObsClient.BeginPutObject and ObsClient.EndPutObject to upload an object asynchronously.

This example asynchronously uploads local file localfile to bucket bucketname as object objectname.

The sample code is as follows:

// Initialize configuration parameters.
ObsConfig config = new ObsConfig();
config.Endpoint = "https://your-endpoint";
// Hard-coded or plaintext AK and SK are risky. For security purposes, encrypt your AK and SK before storing them in the configuration file or environment variables. In this example, the AK and SK are stored in environment variables. Before running the code in this example, configure environment variables AccessKeyID and SecretAccessKey.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);
string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);
// Create an ObsClient instance.
ObsClient client = new ObsClient(accessKey, secretKey, config);
// Upload a file in asynchronous mode.
try
{
    PutObjectRequest request = new PutObjectRequest()
    {
        BucketName = "bucketname",
        ObjectKey = "objectname",
        FilePath = "localfile",//Path of the local file to be uploaded, in which the file name must be specified
    };
    client.BeginPutObject(request, delegate(IAsyncResult ar){
        try
        {
            PutObjectResponse response = client.EndPutObject(ar);
            Console.WriteLine("put object response: {0}", response.StatusCode);
        }
        catch (ObsException ex)
        {
             Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);
             Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);
        }
    }, null);
}
catch (ObsException ex)
{
    Console.WriteLine("Message: {0}", ex.Message);
}

• For more information, see Object Upload Overview.