Check for permission does not work

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From: Marius Groenendijk ("Marius)
Date: 10/29/04 

Date: Fri, 29 Oct 2004 17:32:05 +0200

Hi group,

I want my app to show a msg if my it doesn't have the required
permission(s), however this simply doesn't work.

What am I overlooking/doing wrong??

[VB.NET]
Try
    Dim x As New SecurityPermission(SecurityPermissionFlag.UnmanagedCode)
    x.Flags = Security.Permissions.SecurityPermissionFlag.UnmanagedCode
    x.Demand()
    MessageBox.Show("YES UnmanagedCode permission")
Catch ex As Exception
    MessageBox.Show("NO UnmanagedCode permission")
    ' application.exit
End Try

To ensure that my app doesn't have UnmanagedCode permission I run it from
a network share. But the app always claims to have unmanaged permission.
Trying a pinvoke (=unmanaged) for instance gives a security exception.

TIA,
  Marius.

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