Alibaba Cloud SDK:Handle an exception

In the Classic SDK, you catch ServerException for server-side errors and ClientException for client-side errors. If the server receives the request, the exception includes a RequestId that you can provide to Alibaba Cloud technical support for troubleshooting. If the request does not reach the server, no RequestId is available.

using System;
using Aliyun.Acs.Core;
using Aliyun.Acs.Core.Profile;
using Aliyun.Acs.Core.Exceptions;
using Aliyun.Acs.Ecs.Model.V20140526;
namespace AlibabaCloud.SDK.Sample

{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a client to send requests.
            IClientProfile profile = DefaultProfile.GetProfile(
                // The region ID.
                "<your-region-id>",
                // Get the AccessKey ID of the Resource Access Management (RAM) user from an environment variable.
                Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"),
                // Get the AccessKey secret of the RAM user from an environment variable.
                Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            DefaultAcsClient client = new DefaultAcsClient(profile);

            try
            {
                // Create a request.
                DescribeInstancesRequest request = new DescribeInstancesRequest();
                request.PageSize = 10;

                // Send the request and get the response.
                DescribeInstancesResponse response = client.GetAcsResponse(request);
                System.Console.WriteLine(response.TotalCount);
            }
            catch (ServerException e)
            {
                System.Console.WriteLine(e.ToString());
                // Add your own error handling logic here.
                // For example, print the specific error message.
                Console.WriteLine("ErrorCode=" + e.ErrorCode);
                Console.WriteLine("ErrorMessage=" + e.ErrorMessage);
                // If you encounter a difficult problem, submit a ticket and provide the RequestId.
                Console.WriteLine("ErrorCode=" + e.RequestId);
            }
            catch (ClientException ex)
            {
                System.Console.WriteLine(ex.ToString());
                // Add your own error handling logic here.
                // For example, print the specific error message.
                Console.WriteLine("ErrorCode=" + ex.ErrorCode);
                Console.WriteLine("ErrorMessage=" + ex.ErrorMessage);
            }
        }
    }
}