异步调用Web服务方法

Question

I need to call the Register() method on a Web service asynchronously (using C#). The implementation of the actual Register method in the Web service does not return any value. But it throws an exception if the method fails. Given this, does the following code look ok please?

public void RegisterProduct(string productName)
{
    await RegisterProductAsync();
}


private async static Task RegisterProductAsync(string productName)
{
    try
    { 
         await myWebService.Register(productName);   
    }
    catch(Exception ex)
    {
        LogException(ex);
    }
}

Thanks for your help.

Answer 1

I will probably write the following code:

    private async static Task<int> RegisterProductAsync(string productName)
    {
        try
        {
            await Task.Run(() => myWebService.Register(productName));
            return 0;
        }
        catch (Exception ex)
        {
            LogException();
            return 1;
        }
    }

    public async Task<int> RegisterProduct(string productName)
    {
        var result = await RegisterProductAsync(productName);
        return result;
    }

Following the rule 'async' all the way.

Answer 2

After adding the service, I guess you know a proxy file gets generated.

In the proxy file you can make a note of associated async function, which returns System.Threading.Tasks.Task<xxxxxx> for return values.

So in your case for Register , you can make a note of function RegisterAsync(string) in the proxy file.

You can invoke that function (in your case: RegisterAsync(string )) for asynchronous call.

myWebService.RegisterAsync(productName);