[Solved] how to use async and await on a method that is time comsuming [closed]

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To be able to await MyTimeConsumingTask it must be declared to return a Task.

public async Task<SimeType> MyTimeConsumingTask()

Since you said it does some network IO, you can rewrite it using async NW IO methods and then await it as

var MyResult = await MyTimeConsumingTask(MyClassProperty);

But in your case the simplest approach seems to be using Task.Run

var MyResult = await Task.Run(() => MyTimeConsumingTask(MyClassProperty));

Comparing these two approaches:

1.

public async Task<string> GetHtmlAsync(string url)
{
    using (var wc = new Webclient())
    {
        var html = await wc.DownloadStringTaskAsync(url);
        //do some dummy work and return
        return html.Substring(1, 20);
    }
}

var str1 = await GetHtmlAsync("http://www.google.com");

2.

public string GetHtml(string url)
{
    using (var wc = new Webclient())
    {
        var html = wc.DownloadString(url);
        //do some dummy work and return
        return html.Substring(1, 20);
    }
}

var str2 = await Task.Run(()=>GetHtml("http://www.google.com"));

I would definitely prefer the first one, but the 2nd one is easier to use if it is already working and hard to change method.

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solved how to use async and await on a method that is time comsuming [closed]