One way is to cast the MdiParent() property to the correct type that your main MDI parent is.
For example, if your MDI parent was of type "frmMain" and it had a menu on it called "AdminToolStripMenuItem":
Public Class frmChild Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim main As frmMain = DirectCast(Me.MdiParent, frmMain) main.AdminToolStripMenuItem.Enabled = True End SubEnd Class
For example, if your MDI parent was of type "frmMain" and it had a menu on it called "AdminToolStripMenuItem":
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