'await' operator can only be used within an async method with c# exception?

Question

I am using hellosign c# api and when I am calling function for account info using below code

var helloSign = new HelloSignClient("username", "password");
    Account account = await helloSign.Account.GetAsync();
    Console.WriteLine("Your current callback: " + account.CallbackUrl);

I am getting below error.

Error    2    The 'await' operator can only be used within an async method. Consider marking this method with the 'async' modifier and changing its return type to 'Task'.

below is GetAsync method

public async Task<Account> GetAsync()
        {
            AccountWrapper accountWrapper = await helloSignService.MakeRequestAsync<AccountWrapper>(settings.HelloSignSettings.Endpoints.Account.Get);
            return accountWrapper.Account;
        }

this is type of account class

public class Account : AccountCondensedWithRole
    {
        [JsonProperty("callback_url")]
        public string CallbackUrl { get; internal set; }
    }

Can some one tell me how to call this or how to debug this ???

did that signature change recently - could you try a clean build? — Daniel A. White
– Daniel A. White, Commented May 30, 2015 at 23:32
@DanielA.White i already did rebuilt.. but not working ... so i thought of posting it .. — nikunjM
– nikunjM, Commented May 30, 2015 at 23:34
@DanielA.White what does signature change recently means ...??? — nikunjM
– nikunjM, Commented May 30, 2015 at 23:34

nikunjM · Accepted Answer · 2015-05-31 00:08:25Z

3

you should wrap this block in Async Method like this

public async Task<Type> MethodAsync(){
    // other code if needed ....
    var helloSign = new HelloSignClient("username", "password");
    Account account = await helloSign.Account.GetAsync();
    Console.WriteLine("Your current callback: " + account.CallbackUrl);
    return type;

}

edited May 31, 2015 at 0:08

nikunjM

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answered May 30, 2015 at 23:41

Tchaps

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1 Comment

nikunjM Over a year ago

How should I call inside main method, if I want to some return type.. How can i do that can u please explain it to me ??

dcastro · Accepted Answer · 2015-05-30 23:38:13Z

3

The message is pretty clear. This line must be inside a method marked with async:

Account account = await helloSign.Account.GetAsync();

answered May 30, 2015 at 23:38

dcastro

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Comments

Community · Accepted Answer · 2017-05-23 10:26:52Z

2

You can only use await in an async method.

Here's another question to the same problem await operator

edited May 23, 2017 at 10:26

CommunityBot

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answered May 30, 2015 at 23:38

Stefan Szakal

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