Disable Close Button from Title bar of a Window

we can also override the CreateParams Code: [I did not write this code, but i found it a while back.]

Visual C# .NET
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#region "Disable the 'X'"
protected override CreateParams CreateParams {
    get {
        CreateParams cp = base.CreateParams;
        const int CS_NOCLOSE = 0x200;
        cp.ClassStyle = cp.ClassStyle | CS_NOCLOSE;
        return cp;
    }
}
#endregion

Visual Basic .NET
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#Region "Disable the 'X'"
    Protected Overrides ReadOnly Property CreateParams() As CreateParams
        Get
            Dim cp As CreateParams = MyBase.CreateParams
            Const CS_NOCLOSE As Integer = &H200
            cp.ClassStyle = cp.ClassStyle Or CS_NOCLOSE
            Return cp
        End Get
    End Property
#End Region