[DotNet] Call async method from C/AL synchronously

toLLto

Is there any way to call some DotNet async method from C/AL synchronously?

In C# it can be done like this:

Method definition:

public async Task<string> GetDataAsync(string parameter){}

Synchronous call:

string result = somObject.GetDataAsync(parameter).Result;

Unfortunately I can't translate this to C/AL. Property "Result" is not available, and without this part method is called asynchronously. Somehow I need to call this method synchronously, wait until it finishes and grab the result.

nhsejth

Hi,

The AL language does not support async .Net operations. If you must use an async function, you have to encapsulate it in a wrapper that hides the async behavior.

EvR

Unfortunately that's not possible. Not because async is not supported, but because those extension methods are not available. I would just write a small .net assembly that takes care of it and use it in NAV.
Or if you really want to, check if you can access it using reflection? But I'm not sure that would work.

vytjak

Could you give a few more details, i.e. NAV version, and maybe a snippet of code of what you are trying to do?

Checking one of our projects, I can see we have used the Result property on asyncrhonous method calls successfully, like this:

HttpResponse := HttpClient.PostAsync(ServiceURL, StringContent).Result;
IF (HttpResponse.IsSuccessStatusCode) THEN BEGIN
  ResponseData := HttpResponse.Content.ReadAsStringAsync.Result;
[...]