Microsoft Bot Framework C# Async Issues

Question

I have an issue where a function is not being called. My guess is that it is a synchronization problem.

Here is the code:

await context.PostAsync("Foo Bar");

The function below doesn't seem to be called if I put it before or after the POST to the web server.

context.Call(new QuestionFourDialog(), this.QuestionFourResumeAfter);

Uri baseUri = new Uri("http://somedomain.com/");
UriBuilder builder = new UriBuilder($"{baseUri}/analytics/message?");

using (WebClient webclient = new WebClient())
{
    webclient.Encoding = System.Text.Encoding.UTF8;
    webclient.Headers.Add("Content-Type", "application/json");

    string postBody = $"{{\"message\": \"{this.answer}\", \"key\": \"7F02D18E-88E7-486D-B51F-550118491CB1\"}}";

    webclient.UploadString(builder.Uri, postBody);
}

Is there a way I can call the POST code asynchronous or another way to solve this issue ?

The code above is encapsulated in an async function private async Task QuestionThreeResumeAfter(IDialogContext context, IAwaitable result) it is a handler in a dialog chain. It is worth noting that if I comment out the webclient stuff it works as expected. — Joel Parker, Sep 08 '17 at 18:36

score 0 · Accepted Answer · answered Sep 08 '17 at 19:16

0

I replaced this line

webclient.UploadString(builder.Uri, postBody);

with

webclient.UploadStringAsync(builder.Uri, postBody);

and now it works perfectly.

answered Sep 08 '17 at 19:16

Joel Parker

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Microsoft Bot Framework C# Async Issues

1 Answers1