How do you get your dog to stop excessively barking?

dashboard, the "No barking" only works after I've said it a few times. She'll come to me whining, but then go back and continue to bark.

Treeclimber, I've tried using the shaking can, and at first it did scare her enough to stop for a while. But then she got used to it and continued to bark.

haopee, that is an interesting video. Although, I'm conflicted about giving Gigi a treat for barking and then giving it to her for being quiet. I feel like she would think that I'm so happy she's barking that she is getting rewarded for it. Maybe I'm just confused by the video, but I thank you for posting it.