private async Task RemoveHistoryEntry(CancellationToken ct, INavigationHistoryEntry arg)
{
if (arg.IsAlive)
{
var aliveEntry = (AliveNavigationHistoryEntry)arg;
await ThreadPool.RunAsync(operation => _viewModelFactory.ReleaseViewModel(aliveEntry.ViewModel), WorkItemPriority.Low);
}
}
/// <summary>
/// Executes an action, that takes one parameter, asynchronously.
/// </summary>
/// <typeparam name="T">the type of the parameter for the action</typeparam>
/// <param name="action">the action to execute</param>
/// <param name="parameter">the parameter to pass to the action</param>
/// <param name="delay">
/// a delay in milliseconds to wait before the action is executed (pass a value
/// greate or equal to zero to execute the action without any delay)
/// </param>
public virtual void ExecuteAsync <T>(Action <T> action, T parameter, int delay = 0)
{
// start new thread from the thread pool and pass it the action and the parameter
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
ThreadPool.RunAsync(
async =>
{
// check, if the action execution should be delayed
if (delay > 0)
{
Task.Delay(delay).Wait();
}
// execute the action
action(parameter);
}, WorkItemPriority.Normal);
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}