Control form from another form

How can we control another form from another form? I mean we control form A from from B. For example, if we click button OK on form A, the action will occur on form B.

Gabriell

You can refer to controls in formB from formA as follows:

VB Code:

' cmdUpdate event is in form A
  private sub cmdUpdate_Click()
       frmFormB.txtCustid.Text = 123
  End Sub

I personally don't like this technique of explicitly refering to a control on another form. You can alternatively add a public method in Form B and then invoke that method from form A

VB Code:

' Code in form B
Public sub UpdateCustomerID(byval custid as string)
   txtCustid.Text = custid
End sub
 
 
' code in form A
 
  ' cmdUpdate event is in form A
  private sub cmdUpdate_Click()
       frmFormB.UpdateCustomerID("123")
  End Sub

Send a instance of the first form to the second form when its opened. To do that rewrite the constructor of the second form to take a form as an argument. Something like this...

Code:

---

Dim baseForm as Form1
Public Sub New(frm as Form)
baseform = frm

InitializeComponent()

End Sub

---

Then you have a reference to the form.

Quote:

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Originally posted by Gabriell
How can we control another form from another form? I mean we control form A from from B. For example, if we click button OK on form A, the action will occur on form B.

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or you could declare instances of your forms in a module as follow:

VB Code:

'in a module 
dim frm1 as new form1 
dim frm2 as new form2 
 
'in a form :
frm2.button1.name ="blah"