I dont know how i can ask this question.

Best way is to make what i make.

1 -) Create 2 forms.Save this forms as form1,form2

2 -) Put a combo in form1.

3 -) Write this code in the DropDown event from the combo :

do form Form2

4 -) Run form1.Click the down button from the combo.

Form2 is running but behind form1.
When you close form2 and click the combos down button again this error is pass.

How can i run form2 before form1.
Thanks.