DLL Type.

[Sam Davis]

I am writing an application that will read through a directory of files and
create a release manifest. Basically a document that captures information
about the files. Such as date created, version, etc. I would also like to
determine if the file is a COM object that will need to be registered. Does
anyone know of a way in C# that you can look at a file and determine if it is
in fact a COM object?

Thanks for your help!

Sam

[Nicholas Paldino [.NET/C# MVP]]

Sam,

DLLs are not COM objects, they just host COM objects. What you could do
is load the dll using LoadLibrary, then look for the DllRegisterServer
function to be exported. This is used by the OS to register COM dll's with
the system.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Sam Davis" <Sa******@discussions.microsoft.com> wrote in message
news:CE**********************************@microsof t.com...

I am writing an application that will read through a directory of files and
create a release manifest. Basically a document that captures information
about the files. Such as date created, version, etc. I would also like to
determine if the file is a COM object that will need to be registered.
Does
anyone know of a way in C# that you can look at a file and determine if it
is
in fact a COM object?

Thanks for your help!

Sam

[Sam Davis]

Thanks! I think I figured out how to do it..

System.Object obj;
LoadTypeLibEx(strFile, RegKind.RegKind_None, out obj);
if(obj == null)
return false;
else
return true;

Do you see any issues with this? It seemed to pick out the dll's that hosted
com objects.

Thanks!

"Nicholas Paldino [.NET/C# MVP]" wrote:

Sam,

DLLs are not COM objects, they just host COM objects. What you could do
is load the dll using LoadLibrary, then look for the DllRegisterServer
function to be exported. This is used by the OS to register COM dll's with
the system.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Sam Davis" <Sa******@discussions.microsoft.com> wrote in message
news:CE**********************************@microsof t.com...

I am writing an application that will read through a directory of files and
create a release manifest. Basically a document that captures information
about the files. Such as date created, version, etc. I would also like to
determine if the file is a COM object that will need to be registered.
Does
anyone know of a way in C# that you can look at a file and determine if it
is
in fact a COM object?

Thanks for your help!

Sam

[Nicholas Paldino [.NET/C# MVP]]

Sam,

That should work just fine as well. Make sure that you pass obj to the
static ReleaseComObject on the Marshal class.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Sam Davis" <Sa******@discussions.microsoft.com> wrote in message
news:55**********************************@microsof t.com...

Thanks! I think I figured out how to do it..

System.Object obj;
LoadTypeLibEx(strFile, RegKind.RegKind_None, out obj);
if(obj == null)
return false;
else
return true;

Do you see any issues with this? It seemed to pick out the dll's that
hosted
com objects.

Thanks!

"Nicholas Paldino [.NET/C# MVP]" wrote:

Sam,

DLLs are not COM objects, they just host COM objects. What you could
do
is load the dll using LoadLibrary, then look for the DllRegisterServer
function to be exported. This is used by the OS to register COM dll's
with
the system.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Sam Davis" <Sa******@discussions.microsoft.com> wrote in message
news:CE**********************************@microsof t.com...

>I am writing an application that will read through a directory of files
>and
> create a release manifest. Basically a document that captures
> information
> about the files. Such as date created, version, etc. I would also like
> to
> determine if the file is a COM object that will need to be registered.
> Does
> anyone know of a way in C# that you can look at a file and determine if
> it
> is
> in fact a COM object?
>
> Thanks for your help!
>
> Sam

[Mattias Sjögren]

Thanks! I think I figured out how to do it..

System.Object obj;
LoadTypeLibEx(strFile, RegKind.RegKind_None, out obj);
if(obj == null)
return false;
else
return true; Do you see any issues with this? It seemed to pick out the dll's that hosted
com objects.

It will select the DLLs that contain type library resources, which
many COM libraries do, but not all. And even if it has such a
resource, the DLL doesn't have to be the one hosting the COM classes.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Alan]

I would like to expose a method that returns a dataset.

Is there something I need to do to achieve that so that the webpage using
VBScript can catch the returned dataset?

"Mattias Sjögren" <ma********************@mvps.org> wrote in message
news:%2****************@TK2MSFTNGP02.phx.gbl...

Thanks! I think I figured out how to do it..

System.Object obj;
LoadTypeLibEx(strFile, RegKind.RegKind_None, out obj);
if(obj == null)
return false;
else
return true;

Do you see any issues with this? It seemed to pick out the dll's that
hosted
com objects.

It will select the DLLs that contain type library resources, which
many COM libraries do, but not all. And even if it has such a
resource, the DLL doesn't have to be the one hosting the COM classes.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.