c# - Func 委托(delegate)中的 Task 和 Task

Question

我想清理我的一些代码。我有重载方法。我能以某种方式简化这段代码并在另一个方法中调用一个方法吗？无法弄清楚如何做到这一点。

private async Task<T> DecorateWithWaitScreen<T>(Func<Task<T>> action)
{
    SplashScreenManager.ShowForm(this, typeof(WaitForm), true, true, false);
    try
    {
        return await action();
        
    }
    catch (Exception e)
    {
        MessageBox.Show(e.Message);
        throw;
    }
    finally
    {
        SplashScreenManager.CloseForm(false);
    }
}

private async Task DecorateWithWaitScreen(Func<Task> action)
{
    SplashScreenManager.ShowForm(this, typeof(WaitForm), true, true, false);
    try
    {
        await action();
    }
    catch (Exception e)
    {
        MessageBox.Show(e.Message);
        throw;
    }
    finally
    {
        SplashScreenManager.CloseForm(false);
    }
}

Answer 1

怎么样:

private Task DecorateWithWaitScreen(Func<Task> action)
    => DecorateWithWaitScreen<int>(async () => { await action(); return 0; });