Performing an Asynchronous Upload

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.

Sample code is as follows:

// Initialize configuration parameters.
ObsConfig config = new ObsConfig();
config.Endpoint = "https://your-endpoint";
// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables AccessKeyID and SecretAccessKey.
// Obtain an AK/SK pair on the management console.
string accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);
string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);
// Create an instance of ObsClient.
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. 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.