I hope I can tell it with my bad English. :(

Bindevent can push a method from form (sample) to my textboxes. But I reveal when use "this" keyword in that binded method this give me my forms object reference. I mean with bindevent, "my forms method" not exactly supplant "my textboxes event". It seems it can only supply a hook. Is it possible when I use "this" I get textboxes object instead of my form?