Question

我正在使用hellosign c＃api，当我使用以下代码调用帐户信息功能时

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

我收到以下错误。

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'.

下面是GetAsync方法

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

这是帐户类的类型

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

有人可以告诉我如何调用它或如何调试这个???

Answer 1

信息很清楚。此行必须位于标有async的方法中：

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

Answer 2

你应该在这个

的异步方法中包装这个块

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;

}

Answer 3

您只能在异步方法中使用await。

以下是针对同一问题的另一个问题await operator

'await'运算符只能在异步方法中使用c＃exception吗？

3 个答案: