How to call MDIParent from windows form?

Question

I have an MDI form called "MDIParent1", MDI child form "MDIChild1" and I have a windows form called "FrmTest".

Now there is a button called "btnTest" in "MDIChild1" form and here is the click event.

Dim V As New FrmTest
    V.MdiParent = MDIParent1
    V.Show()

But It couldn't load the "frmTest" form. Is there any another way to do so? Thanks in advance.

Abdusalam Ben Haj · Accepted Answer · 2013-01-26T13:26:36.963

1

Try This :

    Dim V As New FrmTest
    V.MdiParent = Me.MdiParent
    V.Show()

The above assumes that MDIChild1.MdiParent is already set to MDIParent1

You could also do this :

    Dim V As New FrmTest
    V.MdiParent = Application.OpenForms("MDIParent1")
    V.Show()

To close other forms, iterate through MdiChildren collection :

    Dim MyMdiForm as Form = Application.OpenForms("MDIParent1")

    For Each Frm As Form In MyMdiForm.MdiChildren  

          If Frm IsNot V Then

                Frm.Close()

          End If

     Next

edited Jan 26 '13 at 13:26

answered Jan 26 '13 at 12:47

Abdusalam Ben Haj

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FrmTest is not MDIParent. MDIParent1 is my MDIParent. – Azhar Mansuri Jan 26 '13 at 12:50
@AzharMansuri if `MDIChild1.MdiParent` is set to `MDIParent1` then the above will work. – Abdusalam Ben Haj Jan 26 '13 at 12:58
Thanks it is working fine. But how can I close other Child forms? – Azhar Mansuri Jan 26 '13 at 13:17

How to call MDIParent from windows form?

1 Answers1