Toolbar keep coming out if u always press it

[h0T]

hi everyone... can anyone tell me how to show or guide me how to show only
a form one time only as u can press many times in toolbar or contextmenu???
this is my code

PrivateSub ToolBar1_ButtonClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolBarButtonClickEventArgs) Handles ToolBar1.ButtonClick

select case toolbar1.buttons.indexof(e.button)

case 0

Dim room1 AsNew Rooms
room1.Show( )
room1.mdiparent = me
case 1
Dim guest1 AsNew Guests
guest1.Show()
guest1.mdiparent = me
case 2
Dim charges1 AsNew Charges
charges1.Show()
charges1.mdiparent = me
end select
EndSub

Pls Give Me Show Guide PLs PLs PLs PLS

 

[Paszt]

see this thread for sample code: Check MdiChild is open or not?

 

[h0T]

Thankz again
Thankz again Paszt...
i still dont understand about wat u give me that url

Private aopen as boolean = false
private bopen as boolean = false
private copen as boolean = false

PrivateSub ToolBar1_ButtonClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolBarButtonClickEventArgs) Handles ToolBar1.ButtonClick

select case toolbar1.buttons.indexof(e.button)

case 0

Dim room1 AsNew Rooms
if aopen = false then
room1.Show( )
room1.mdiparent = me
aopen = true ( so this will stop it from openin it again)

Else
*******
end if


EndSub
In this part ***** can anyone tell me how to write code to only show once only.... example is like if u press my room icon is will show (one thing )
if press second times , it will only show back the form that u just clicked???

PLs PLs Help Me



Thankz in advanced again...
Thankzz

 

[Paszt]

In the thread that I linked to above, you first declare the form as a class member variable (out side of any procedure). Then when you click the menuItem, the code uses an If statement to check to see if the class member variable is nothing (it hasn't been created yet) or has been Disposed (disposed happens when you close the form). If it is nothing or disposed, the code creates another instance of the form. Outside of the If statement, the form is shown (using the show method).

 

[h0T]

oh k thankz again i will try

 

[h0T]

Thank again Paszt dude.. i did it alreadi...hehe thankz