how to make async method wait till it get result and then proceed ?

sandeep Gupta

await generic.getFindocFunds(users);

public async Task getFindocFunds(Users users)

{

try

{

Uri requestUri = new Uri("https://fintrader.myfindoc.com/api/v1/funds/view?client_id=" + users.mst_User.UserId.ToString() + "&type=all");

var objClint2 = new System.Net.Http.HttpClient();

objClint2.DefaultRequestHeaders.Add("Authorization", "Bearer " + users.mst_User.Token);

objClint2.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

System.Net.Http.HttpResponseMessage respon2 = await objClint2.GetAsync(requestUri);

string responJsonText2 = await respon2.Content.ReadAsStringAsync();

Dictionary values1 = JsonConvert.DeserializeObject>(responJsonText2);

if (values1["status"].ToString() == "success")

{

Dictionary values21 = JsonConvert.DeserializeObject>(values1["data"].ToString());

dynamic values22 = JsonConvert.DeserializeObject(values21["values"].ToString());

foreach (var item in values22)

{

if (item[0].ToString() == "Available")

{

users.cashAvailable = Convert.ToDouble(item[1]);

break;

}

catch (Exception ex)

{

Log.writeLog(ex, "getSamcoFunds()");

}

the main method does not wait for the called method result and proceed with further execution

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Gupta5y ago
Accepted answer
Hey Sandeep

You can call Wait function of _task object to wait till the task has been done.
public static void Main()
       {
           var _task = getFindocFunds(users); // your Task based method
           _task.Wait();
// your other code goes here
       }
Do let me know, if it solves your problem.
Amit Gupta5y ago
If you are updated version of c# compiler then you can change the Main() to async and then execute like below
static async Task Main(string[] args)
        {
            await Task.Run(async() =>
            {
                await getFindocFunds(users);  // your Task based method, you can use it directly without Task.Run function as it is used to run on a seperate thread
                // your other code goes here
            });
            // your other code goes here
        }
Good Luck!
sandeep Gupta5y ago
@Sachin, it will print abc first and then downloaded. however , it should print downloded first and then abc.

@amit , the code did work but the method thread wait for the execution of async method and at the same time , we cannot use the GUI as the main thread is waiting for the task to complete. is there any work around ?
Sachin Singh5y ago
Async and await are used to make your UI non blocking , that is expected behaviour .
The main thread is always free to do his other jobs.
consider below example
void Main()
{
Get();
Console.Write("abc");

}

public static async Get()
{
await download();
cw("downloaded");
}

public void download()
{
Thread.sleep(7000);
}
Here the key thing to notice is ,
ABC will ofcourse print but downloaded will not be printed untill the task is finished.
so , if you want some method to wait then that particular method must be inside the async method and not directly inside the main (UI).
As downloaded is inside async so it will not be executed untill download is finished but the main thread will definitely execute whatever it has like "abc";