Calling a form in a user control

Hello All,

I have created a windows control using C#, which has some textboxes and a
datagrid, I want to add an event handler to the datagrid, when the user
clicks on a specific row it should open an instance of a form that exist in
the application which will user that control.
The problem is how can I declare the instance of that form (the form
constructor takes 2 parameters) in the control?

Thanks

Regards,