C#•2y ago

Using async,await in old codebase

Currently, I'm implementing a custom control that utilizes an API, so there are some async methods. The problem is that I cannot wrap my head around, how I would use them in this old codebase I'm working on (WinForms, .NET Framework 4.8). Simplified example: The user control has this method

public async Task LoadDocuments(int id)
{
    // ...
}

public async Task LoadDocuments(int id)
{
    // ...
}

I'd need to integrate it here somehow

void Init()
{
    /*await*/ this.customControl.LoadDocuments(this.id);
}

void Init()
{
    /*await*/ this.customControl.LoadDocuments(this.id);
}

Here I could change void to Task and put an async in front of it. That'd work, but this method is used here...

protected override void Method1()
{
    /*await*/ Init();
}

protected override bool Method2()
{
    /*await*/ Init();
}

protected override void Method1()
{
    /*await*/ Init();
}

protected override bool Method2()
{
    /*await*/ Init();
}

(don't ask about method names and how much they do not make sense) In the first method, i could theoretically use async and leave void as is, but in the second case, i cannot easily add async to the method, because now it requires a Task<bool> of course. Anybody got an idea?

4 Replies

Unknown User•2y ago

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HimmDawg•2y ago

Thank you. But this article states exactly what I was afraid of fluffyFoxMood

either rewriting the entire code or use GetAwaiter, GetResult etc. and pray for no deadlocks

Trinitek•2y ago

yeah those two are pretty much your options

Angius•2y ago

It's async all the way down Just use the quick fixes to turn all the methods that aren't async into async ones lol Lastly, async Task Main(string[] args)

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Using async,await in old codebase