createAsync2<TResult> method
Creates a RxCommand for an asynchronous handler function with no parameter that returns a value
func
: handler function
canExecute
: observable that can bve used to enable/diable the command based on some other state change
if omitted the command can be executed always except it's already executing
isExecuting will issue a bool
value on each state change. Even if you
subscribe to a newly created command it will issue false
emitLastResult
will include the value of the last successful execution in all CommandResult events unless there is no new result.
For the Observable<CommandResult>
that RxCommand implement this normally doesn't make sense
if you want to get an initial Result with data==null, error==null, isExceuting==false
pass
emitInitialCommandResult=true
.
Implementation
static RxCommand<Null, TResult> createAsync2<TResult>(AsyncFunc<TResult> func,{Observable<bool> canExecute, bool emitInitialCommandResult = false, bool emitLastResult=false})
{
return new RxCommandAsync<Null,TResult>((_) async => func(),canExecute, emitInitialCommandResult,emitLastResult);
}