[RESOLVED] Forms docking problem in splitcontainer control under MdiForm

[levent]

I'm using SplitContainer (It's contain two panels) control under my MdifForm.I'm using following code to showing my exist forms under SplitContainer panel2

With My_Form
        .MdiParent = Me
        SplitContainer.Panel2.Controls.Add(My_Form)
        .My_Form_Activated(Me, e)
        .WindowState = FormWindowState.Maximized
        .Dock = DockStyle.Fill
        .Show()
    End With

Docking fill command work properly at first displaying of the My_Form. But after mdiform resizing, my_form size doesn't change. How can i fix this problem thanks.

[4x2y]

There is a conflict between Dock and WindowState

        With My_Form
            .MdiParent = Me
            SplitContainer.Panel2.Controls.Add(My_Form)
            .My_Form_Activated(Me, e)
            '.WindowState = FormWindowState.Maximized
            .FormBorderStyle = FormBorderStyle.FixedDialog ' To prevent showing resize cursor when trying to resize the MDI parent
            .MaximizeBox = False
            .Dock = DockStyle.Fill
            .Show()
        End With

Anyway you cannot prevent moving My_Form from its titlebar

What is the idea of using Form inside SplitContainer?

[levent]

Hi 4x2y,

My forms borderstyle defined as none because i don't want to user see the form borders.
I divided window two part with SplitContainer control .
I'm displaying some graphics object in top panel and user enter data with using my_forms obejct in panel2.
Problem still continue

Thanks

[4x2y]

Problem still continue

Did you tried my above solution?

Borderless form makes things easier

        With My_Form
            .MdiParent = Me
            SplitContainer.Panel2.Controls.Add(My_Form)
            '.My_Form_Activated(Me, e)
            .FormBorderStyle = FormBorderStyle.None
            .Dock = DockStyle.Fill
            .Show()
        End With

Again why you don't use Panel container instead of Form?

[levent]

Hi 4*2y

Yes i tried your code but form doesn't display when i remove ".WindowState = FormWindowState.Maximized" code.

I don't use panel container because i have to many forms and there are to many code under these forms.

Thanks

[4x2y]

I see, the code works fine for displaying only one Form, but in your case you have many, so you must remove the existing form before adding the new one, try this

Option Strict On
Option Explicit On

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        ShowForm(Form2)
    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        ShowForm(Form3)
    End Sub

    Private Sub ShowForm(frm As Form)
        Dim blnExist As Boolean = False
        'Check if the form is already in SplitContainer.Panel2
        If SplitContainer1.Panel2.Controls.Count > 0 Then
            If frm.Equals(SplitContainer1.Panel2.Controls(0)) Then
                blnExist = True ' the same form, keep it.
            Else
                SplitContainer1.Panel2.Controls.RemoveAt(0) ' different form, remove it.
            End If
        End If

        If Not blnExist Then
            With frm
                .MdiParent = Me
                SplitContainer1.Panel2.Controls.Add(frm)
                .FormBorderStyle = FormBorderStyle.None
                .Dock = DockStyle.Fill
                .Show()
            End With
        End If
    End Sub

End Class

[levent]

Thanks 4x2y for the solution