passing value from MDi child1 to MDi Child2

Question

Sir, I am doing a MDI form Now.

I have a Master form(frmMDI) and Two Children forms:-frmStudentsDetails and frmDisplay.

In frmMDi, there is a button(btnNext) to enter frmStudentsDetails.

In that form, i entered the Details. That form also have a Button(btnSubmit) to enter frmDisplay and show the data of frmStudentsDetails   in  frmDisplay.

how it possible?, reply me with whole code.