How to open child forms positioned within MDI parent in VB NET

Question

How do we arrange child forms in a parent MDI window  I m able to call and display a child form from a menu on the parent  but the child pops up outside the parent - I want it to actually be inside the parent  I ve checked in C  and VB Net solutions but they all say pretty much the same  i e  try to access LayoutMDI  such as here   http   msdn microsoft com en-us library x9fhk181 aspx  The problem is  where do I access this  When I m in the code of my MDI parent  Me LayoutMdi is not recognized  In which part of the application do I put the Me LayoutMDI code   Edit  The Me LayoutMDI code worked in the parent after all  I d been trying for a while but don t know where I was going wrong   However  the child continues to pop up out of the parent  Here s an image of how that happens  The broader form in the back is the parent  and the one with the gridview and two buttons is the new child that popped up  I want it to pop up  Docked  within the parent

User · Answer

Dont set MDI Child property from MDIForm

In Chileform Load event give the below code

    Dim l As Single = (MDIForm1.ClientSize.Width - Me.Width) / 2
    Dim t As Single = ((MDIForm1.ClientSize.Height - Me.Height) / 2) - 30
    Me.SetBounds(l, t, Me.Width, Me.Height)
    Me.MdiParent = MDIForm1

end

try this code

User · Answer

See this page for the solution  https   msdn microsoft com en-us library 7aw8zc76 v vs 110  aspx  I was able to implement the Child form inside the parent   In the Example below Form2 should change to the name of your child form  NewMDIChild MdiParent me is the main form since the control that opens  shows  the child form is the parent or Me   NewMDIChild Show   is your child form since you associated your child form with Dim NewMDIChild As New Form2    Protected Sub MDIChildNew Click ByVal sender As System Object  ByVal e As System EventArgs  Handles MenuItem2 Click    Dim NewMDIChild As New Form2       Set the Parent Form of the Child window     NewMDIChild MdiParent   Me     Display the new form     NewMDIChild Show   End Sub   Simple and it works

User · Answer

Try the code below and       1 - change the name of the MENU as in my sample the menuitem was called  Form7ToolStripMenuItem Click    2 - make SURE to paste it into an MDIFORM and not just a basic FORM  Then let me know if the CHILD form still shows OUTSIDE the parent form  Private Sub Form7ToolStripMenuItem Click ByVal sender As System Object  ByVal e As System EventArgs  Handles Form7ToolStripMenuItem Click      Dim NewForm As System Windows Forms Form     NewForm   New System Windows Forms Form      USE THE NEXT LINE - to add an existing CUSTOM form you already have      NewForm   Form7                              NewForm Width   400     NewForm Height   250     NewForm MdiParent   Me     NewForm Text    CAPTION      NewForm Show       DockChildForm NewForm   left             dock left      DockChildForm NewForm   right            dock right      DockChildForm NewForm   top              dock top      DockChildForm NewForm   bottom           doc bottom      DockChildForm NewForm   full             fill the client area  maximise the child INSIDE the parent       DockChildForm NewForm   Anything-Else    center the form  End Sub  Private Sub DockChildForm ByRef Form2Dock As Form  ByVal Position As String       Dim XYpoint As Point     Select Case Position         Case  left              Form2Dock Dock   DockStyle Left         Case  top              Form2Dock Dock   DockStyle Top         Case  right              Form2Dock Dock   DockStyle Right         Case  bottom              Form2Dock Dock   DockStyle Bottom         Case  full              Form2Dock Dock   DockStyle Fill         Case Else             XYpoint   New Point             XYpoint X     Me ClientSize Width - Form2Dock Width    2              XYpoint Y     Me ClientSize Height - Form2Dock Height    2              Form2Dock Location   XYpoint     End Select End Sub

User · Answer

Private Sub FileMenu Click ByVal sender As System Object  ByVal e As System EventArgs  handles FileMenu Click      Form1 MdiParent   Me     Form1 Dock   DockStyle Fill     Form1 Show   End Sub

User · Answer

Try Making the Child Form s StartPosition Property set to Center Parent  This you can select from the form Properties

User · Answer

You will want to set the MdiParent property of your new form to the name of the MDI parent form  as follows   dim form as new yourform form show   form MdiParent   nameParent

User · Answer

Try adding a button on mdi parent and add this code  to set your mdi child inside the mdi parent  change the yourchildformname to your MDI Child s form name and see if this works       Dim NewMDIChild As New yourchildformname        Set the Parent Form of the Child window      NewMDIChild MdiParent   Me      Display the new form      NewMDIChild Show

User · Answer

If your form is  outside  the MDI parent  then you most likely didn t set the MdiParent property   Dim f As New Form f MdiParent   Me f Show     Me  in this example  is a form that has IsMdiContainer   True so that it can host child forms   For re-arranging the child form layout  you just call the method from your MdiContainer form   Me LayoutMdi MdiLayout Cascade    The MdiLayout enum also has tiling and arrange icons values

[vb.net] How to open child forms positioned within MDI parent in VB.NET?

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