My method is calling a web service and working asynchronusly.
When getting response, everything works fine and I am getting my response.
The problem starts when I need to return this response.
here is the code of my method:
public async Task<string> sendWithHttpClient(string requestUrl, string json)
{
try
{
Uri requestUri = new Uri(requestUrl);
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Clear();
...//adding things to header and creating requestcontent
var response = await client.PostAsync(requestUri, requestContent);
if (response.IsSuccessStatusCode)
{
Debug.WriteLine("Success");
HttpContent stream = response.Content;
//Task<string> data = stream.ReadAsStringAsync();
var data = await stream.ReadAsStringAsync();
Debug.WriteLine("data len: " + data.Length);
Debug.WriteLine("data: " + data);
return data;
}
else
{
Debug.WriteLine("Unsuccessful!");
Debug.WriteLine("response.StatusCode: " + response.StatusCode);
Debug.WriteLine("response.ReasonPhrase: " + response.ReasonPhrase);
HttpContent stream = response.Content;
var data = await stream.ReadAsStringAsync();
return data;
}
}
}
catch (Exception ex)
{
Debug.WriteLine("ex: " + ex.Message);
return null;
}
and I am calling it this way:
Task <string> result = wsUtils.sendWithHttpClient(fullReq, "");
Debug.WriteLine("result:: " + result);
but when printing result I am seeing something like this: System.Threading.Tasks.Task
how can I get the result string as I did with data inside my method.
You need to do this since you are calling the async method synchronously:
Task<string> result = wsUtils.sendWithHttpClient(fullReq, "");
Debug.WriteLine("result:: " + result.Result); // Call the Result
Think of the Task<string> return type as a 'promise' to return a value in the future.
If you called the async method asynchronously then it would be like the following:
string result = await wsUtils.sendWithHttpClient(fullReq, "");
Debug.WriteLine("result:: " + result);
An asynchronous method returns a task, representing a future value. In order to get the actual value wrapped in that task, you should await it:
string result = await wsUtils.sendWithHttpClient(fullReq, "");
Debug.WriteLine("result:: " + result);
Note that this will require your calling method to be asynchronous. This is both natural and correct.