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Maximize Child Form inside MDI parent, VB.NET

How do I maximize the child form so it fills the MDI Parent?
My MDI parent fills the entire monitor, but the child only fills a portion of the MDI Parent. Since I dont' always know what resolution someone will be viewing at, I can't really hard code this.

Any ideas?

Thanks!

ASKER CERTIFIED SOLUTION

Zhaolai

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Mike Tomlinson

Set the WINDOWSTATE of the MdiChild to Maximized and it will fill the entire MdiParent...

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim f2 As New Form2
        f2.MdiParent = Me
        f2.WindowState = FormWindowState.Maximized
        f2.Show()
    End Sub

End Class

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Mike Tomlinson

Just FYI, the two answers above produce different results...the "correct" one depends on your app I suppose. =)

Dock.Fill doesn't merge with the MdiParent or update the main Form caption while WindowState.Maximized does:

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim f2 As New Form2
        f2.mdiparent = Me
        f2.Dock = DockStyle.Fill
        f2.Show()
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim f2 As New Form2
        f2.MdiParent = Me
        f2.WindowState = FormWindowState.Maximized
        f2.Show()
    End Sub

End Class

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MdiChildDockFilled.jpg
MdiChildWindowstateMaximized.jpg

slightlyoff

ASKER

I appreciate the insight. I saw that it worked and awarded the points (i didn't get a chance to test your solution) - but I can see where your answer is correct as well.

thank you for going the extra mile to explain the difference! It's helpful for a newb like me.

Mike Tomlinson

No problem...good luck!