dynamic button how to assign different events

I need to have one button on an asp.net web form.  The button text will be depend on the "customer status"

So if a customer is "pending" then the button text should be set to "approve customer"

Now I want to pass a variable of "approve" to the click event of this button.

Also if a customer is "approved"  I want button text to say "disapprove" and pass variable to onclick of this button variable "disapprove"

How can I do this?