InvalidCastException

Question

Hello! When I find the child component by GetComponentsInChildren() method, I've got InvalidCastException. here is my coding.

 var fireEmitters = campfire.GetComponentsInChildren(ParticleEmitter);
     for(var emitter : ParticleEmitter in fireEmitters){
         emitter.emit = true;
     }

There are two Particle System objects in the campfire. But I have got null.

Thanks.

Answer 1

Answer by DaveA · Mar 28, 2012 at 02:40 AM

Try:

var fireEmitters : ParticleEmitter[] = campfire.GetComponentsInChildren(ParticleEmitter);

or

var fireEmitters : ParticleEmitter[] = campfire.GetComponentsInChildren(ParticleEmitter) as ParticleEmitter[];

or

var fireEmitters : ParticleEmitter[] fireEmitters = campfire.GetComponentsInChildren(ParticleEmitter);

or

var fireEmitters : ParticleEmitter[] = campfire.GetComponentInChildren.();

Add comment · Share

Answer 2

Answer by kyawswaaung · Mar 28, 2012 at 04:11 AM

Yes. I did. But I still got InvalidCastException. I found one thing. GetComponentsInChildren method returns Component array. so I have change the coding.

 var fireEmitters : Component[] = campfire.GetComponentsInChildren(ParticleEmitter);
 for(var emitter : Component in fireEmitters){
     emitter.particleEmitter.emit = true;
 }

Now I got the two Particle emitter according to this coding.

Thanks a lot.

Add comment · Share

Answer 3

Answer by flodis · Feb 26, 2013 at 03:40 AM

This is how I got it working on my own script:

 var laserControllers: Component[];
 laserControllers = GetComponentsInChildren(LaserController);
 for(var laserController: Component in laserControllers) {
     var laserControllerScript: LaserController = laserController;
     laserControllerScript.Fire();
 }

It seems like the array has to be of type Component but the items can be cast to your own type inside the for loop.

Add comment · Share

InvalidCastException

3 Replies

Your answer

Follow this Question

Related Questions