how to handle child Exception when it's in async

Question

hi friends, i one method, that method contains more than 10 child methods with async, i would like to capture the exceptions from child in parent method, just see the my code for clearance

 

public static class StateMachineCommand

{

/// <summary>

/// Creates a DelegateCommand using a trigger and a state machine.

/// The command can be executed if the trigger can be executed on the current state machine status and the specified "CanExecute" function is null or returns true.

/// When the command is executed the specified action is executed and then the trigger is fired

/// </summary>

/// <typeparam name="TState">State machine status type.</typeparam>

/// <typeparam name="TTrigger">State machine status trigger.</typeparam>

/// <param name="stateMachine">A state machine instance</param>

/// <param name="trigger">A trigger.</param>

/// <param name="execute">Action to execute when the command is executed.</param>

/// <param name="canExecute">The command can be executed only if this function is null or return true and the current status of the machine supports the trigger.</param>

public static DelegateCommand CreateCommand<TState, TTrigger>(this StateMachine<TState, TTrigger> stateMachine, TTrigger trigger, Action execute = null, Func<bool> canExecute = null)

{

if (canExecute == null)

{

canExecute = () => true;

}

if (execute == null)

{

execute = () => { };

}

return new DelegateCommand(

executeMethod: () =>

{

execute(); ----->here am excuting all child methods and it's will not return any value and it's all async, if any error i caught here means i need to stop the following code whichever mentioned in green color

if (stateMachine.CanFire(trigger))

{

stateMachine.Fire(trigger);

}

},

canExecuteMethod: () => canExecute());

}

 

 

thanks in advance