Windows Azure管理库1.0.1中调用调用的问题

Question

When I invoke any async method in the azure management library the application crashes without any exception or other indication. I am using visual studio 2013 .net 4.5 and Windows Azure Management Libraries 1.0.1

private static async void ListLocation()
{
     const string filePathCert = @"C:\path\to\certificate";
     var certificate = new X509Certificate2(filePathCert, "password");

     var credentials = new CertificateCloudCredentials("xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxx", certificate);
     try
     {
         using (ManagementClient client = CloudContext.Clients.CreateManagementClient(credentials))
         {
             var result = await client.Locations.ListAsync(); //Here the application terminates without any message /exception
             var locations = result.Locations;
             foreach (var location in locations)
             {
                 Console.WriteLine("Location: {0}", location.Name);

                 foreach (var feature in location.AvailableServices)
                 {
                     Console.WriteLine(feature);
                 }
             }
        }
    }
    catch(Excepiton ex)
    {
        Debug.WriteLine(ex)
    }
}

Answer 1

Do not use async void ; it has very awkward error handling semantics. I explain this in more detail in my MSDN article on best practices for asynchronous programming .

Instead, use async Task , and ensure that the calling code await s the returned task. This will ensure that your code will observe any exceptions.