Update a sql table using Windows form from the Menustrip

Question

Sir I am Doing ADO.NET Program using C# and sql Server.

I want your help in the followings.

I want to open a form using menuStrip with full data I saved in the form.

lets see the MDI Parent Form:-



See in the Menu School. there is four items; one to create  school and the edit(Update) and delete.

I did the Create school function.

I want your help in the Edit School Item

when I click in the edit school , I want to open the form frmSchool with data in it

lets see the frmSchool




see when click in the edit school , I want full data in the each control of this form.

My task is  update function on this form.

please  give me a solution.