Why we use .Deny in VB.NET?

Hi, Every-one few days ago i was check some VB.NET example's over the different website's in one example I saw .Deny(). The example are:



Imports System.Security.Principal
 Imports System.Security.Permissions
 Imports System.IO
 Imports System.Diagnostics
 
 public class MainClass
    Shared Sub Main()
         Dim oRp As New RegistryPermission(Security.Permissions.PermissionState.Unrestricted)
         oRp.Deny()
         Dim objLog As New EventLog
         Dim objLogEntryType As EventLogEntryType
         Try
             Throw (New EntryPointNotFoundException)
         Catch objA As System.EntryPointNotFoundException
             Try
                 If Not System.Diagnostics.EventLog.SourceExists("Example") Then
                     System.Diagnostics.EventLog.CreateEventSource("Example", "System")
                 End If
                 objLog.Source = "Example"
                 objLog.Log = "System"
                 objLogEntryType = EventLogEntryType.Information
                 objLog.WriteEntry("Error: " & objA.Message, objLogEntryType)
             Catch objB As System.Exception
                 Console.WriteLine(objB.Message)
             End Try
         End Try
    End Sub
 End Class

Sonebody plz guide me why we use .Deny and why this program give error when I was compile this program?

1 Reply

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Vulpes15y ago
If you're using the latest version of VB (Visual Studio 2010), then you should get a compiler warning (rather than an error) that the RegistryPermission.Deny() method is obsolete. The code should compile fine in earlier versions.

If you want to know what this method did, then I'd check out the MSDN docs - http://msdn.microsoft.com/en-us/library/system.security.codeaccesspermission.deny.aspx.

However, as it's obsolete and hasn't been replaced with anything else, then I wouldn't worry about it now.