/// <summary>
/// Executes the asynchronous command. Any exceptions from the asynchronous delegate are captured and placed on <see cref="Execution"/>; they are not propagated to the UI loop.
/// </summary>
/// <param name="parameter">The parameter for the command.</param>
public override async Task ExecuteAsync(object parameter)
{
var tcs = new TaskCompletionSource <object>();
Execution = NotifyTask.Create(DoExecuteAsync(tcs.Task, _executeAsync, parameter));
var propertyChanged = PropertyChanged;
propertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("Execution"));
propertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("IsExecuting"));
tcs.SetResult(null);
await Execution.TaskCompleted;
PropertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("IsExecuting"));
}
/// <summary>
/// Executes the asynchronous command. Any exceptions from the asynchronous delegate are captured and placed on <see cref="Execution"/>; they are not propagated to the UI loop.
/// </summary>
/// <param name="parameter">The parameter for the command.</param>
public override async Task ExecuteAsync(object parameter)
{
Execution = NotifyTask.Create(_executeAsync(parameter));
if (_canExecute == null)
{
base.OnCanExecuteChanged();
}
var propertyChanged = PropertyChanged;
propertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("Execution"));
propertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("IsExecuting"));
await Execution.TaskCompleted;
if (_canExecute == null)
{
base.OnCanExecuteChanged();
}
PropertyChanged?.Invoke(this, PropertyChangedEventArgsCache.Instance.Get("IsExecuting"));
await Execution.Task;
}