Add a button to multiple grids programmatically

[Jessica]

I have a project with many, many grids. I want to add a clear all filters button to every grid in my project. I have a clear all method that works beautifully, but I can't seem to add a button with a successful event handler to all my grids without manually going through and adding the button. I would like it somewhere at the top of my grid. Any help would be appreciated.