Searching from Userform to Database

Question

I have a webform that keeps an inventory of vehicle maintenance.  This form is still in the works, but I am attempting to make it very userfriendly.  I need to add a search function so I added a textbox (called textSearch) and a button to push when ready to search.  The employee will type the Customer last name into that box, and I need the employee to be redirected to a different userform, and have a datagrid (that is already set-up on the other user form) display all customers with that last name.  How would this be done?