Security.Permissions.SecurityPermission

Hej

Jeg har lavet en windows usercontrol i VB som jeg bruger i asp.net.

Når jeg kører aplikationen selvstændig så er der ingen problemer.

Når jeg indlæser controllen som en dll i asp.net, så virker den også fint men når jeg prøver at læse indholdet af en fil på disken så får jeg følgende fejl:

************** Exception Text **************
System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
  at System.Security.CodeAccessSecurityEngine.CheckNReturnSO(PermissionToken permToken, CodeAccessPermission demand, StackCrawlMark& stackMark, Int32 unrestrictedOverride, Int32 create)
  at System.Security.CodeAccessSecurityEngine.Assert(CodeAccessPermission cap, StackCrawlMark& stackMark)
  at System.Security.CodeAccessPermission.Assert()
  at uploadActiveX.test.Button3_Click(Object sender, EventArgs e)
  at System.Windows.Forms.Control.OnClick(EventArgs e)
  at System.Windows.Forms.Button.OnClick(EventArgs e)
  at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
  at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
  at System.Windows.Forms.Control.WndProc(Message& m)
  at System.Windows.Forms.ButtonBase.WndProc(Message& m)
  at System.Windows.Forms.Button.WndProc(Message& m)
  at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
  at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
  at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
The action that failed was:
Demand
The type of the first permission that failed was:
System.Security.Permissions.SecurityPermission
The Zone of the assembly that failed was:
Internet

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For at minimere koden helt så jeg denne kode i min usercontrol:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ' Open a new PermissionSet.
        Dim fileio As FileIOPermission = New FileIOPermission(PermissionState.Unrestricted, "c:\temp\")
        fileio.Assert()

        PictureBox1.Load("C:\temp\DSC00007.JPG")
    End Sub