C＃反编译代码错误（“无效的表达式术语”）

Question

I have decompiled a .NET application and the code it gives me back it's wrong, and i dont know how to replace it. These are some of the wrong lines:

if (((TaskAwaiter<HttpResponseMessage>) ref awaiter1).get_IsCompleted()) {...}

if (((TaskAwaiter<Uri>) ref awaiter2).get_IsCompleted()) {...}

The error it gives me back is "Invalid expression term 'ref'." Can anyone help me out? Thanks

Answer 1

It's check if task (task is invoked before condition) has completed already. Eg

HttpClient httpClient = new HttpClient();
var result = await httpClient.GetStringAsync(url);

is equal

this.<httpClient>5__1 = new HttpClient();
taskAwaiter = this.<httpClient>5__1.GetStringAsync(this.url).GetAwaiter();
if (!taskAwaiter.get_IsCompleted())
{  
    //...
}