Re: Question about ComRegisterFunctionAttribute...

"Helper" is not ComVisible.

--
Steve Johnson


On Jan 27, 2008 8:17 PM, Gyorgy Bozoki <[email protected]> wrote:

> Hi all,
>
> I seem to have a problem with ComRegisterFunctionAttribute attribute. Here
> is a bit of sample code:
>
> // Start of sample --------------------
> // --------------------
> // Sample.cs
> // --------------------
> using System;
> using System.Collections.Generic;
> using System.Text;
> using System.Runtime.InteropServices;
> using System.Windows.Forms;
>
> namespace SampleLib
> {
>    public static class Guids
>    {
>        public const string CLSID_TestGuid =
>            "33DE01D3-DC04-4198-AE5D-58B1A36FC122";
>    }
>
>    [Guid ( Guids.CLSID_TestGuid ), ProgId ( "SampleLib.SampleClass" )]
>    [ClassInterface ( ClassInterfaceType.AutoDual )]
>    [ComVisible ( true )]
>    public class SampleClass
>    {
>        public void SomeFunc ()
>        {
>            MessageBox.Show ( "Something" );
>        }
>    }
>
>    public static class Helper
>    {
>        [ComRegisterFunctionAttribute]
>        public static void RegServer ( Type oType )
>        {
>            MessageBox.Show ( "Register" );
>        }
>
>        [ComUnregisterFunctionAttribute]
>        public static void UnregServer ( Type oType )
>        {
>            MessageBox.Show ( "Unregister" );
>        }
>    }
> }
>
> // --------------------
> // AssemblyInfo.cs
> // --------------------
> using System.Reflection;
> using System.Runtime.CompilerServices;
> using System.Runtime.InteropServices;
> using System.Security.Permissions;
>
> [assembly: AssemblyTitle ( "SampleLib" )]
> [assembly: AssemblyDescription ( "" )]
> [assembly: AssemblyConfiguration ( "" )]
> [assembly: AssemblyCompany ( "" )]
> [assembly: AssemblyProduct ( "SampleLib" )]
> [assembly: AssemblyCopyright ( "Copyright C  2008" )]
> [assembly: AssemblyTrademark ( "" )]
> [assembly: AssemblyCulture ( "" )]
> [assembly: RegistryPermissionAttribute ( SecurityAction.RequestMinimum,
>        ViewAndModify = "HKEY_LOCAL_MACHINE" )]
>
> [assembly: ComVisible ( false )]
> [assembly: Guid ( "86077dae-29ae-4905-855b-798aaa7be210" )]
> [assembly: AssemblyVersion ( "1.0.0.0" )]
> [assembly: AssemblyFileVersion ( "1.0.0.0" )]
> // End of sample --------------------
>
> The build output is a single DLL, SampleLib.dll.
>
> It seems that the above code builds without any errors but when I try to
> register the resulting DLL using regasm.exe, the RegServer and/or
> UnregServer function is never called. According to the documentation,
> these
> functions can be public or private (or internal), but they must be static
> and take a single Type parameter to be called during registration for COM.
>
> Is there anything I need to do to make this working? I'm using .Net 2.0with
> SP1 and I have this same behavior on several computers. Any advice would
> be
> greatly appreciated.
>
> Thanks,
> Gyorgy Bozoki
>
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