Outlook Redemption

[Glyn Meek]

We have just purchased a development tool called Redemption for Outlook
which lets us deal with that vagaries of interfacing to all the different
versions of Outlook. Works wonderfully well (although the documentation is
predictably DREADFUL!!).


Our problem: When we install and then run our software on other computers,
we get a runtime exception "Cannot create ActiveX control" in the routines
where we are creating a new redemption object (like
"SafeContactItem".renamed desktop_ContactITEM in our dll.). Again, this is
code works fine on a system where the desktop. dll HAS been registered - ie
my development system. We are using Visual Studio/2003 and Visual Basic, and
in the VS installation/Setup project, I have tried making the desktop.dll
file register as vsdraCOM and vsdraCOMRelativePath.

Does anyone else have experience of using this tool (we can't get hold of
their support folks to save our lives, even though it cost us $199 for the
software!!!!!). It seems to be a problem putting their dll into the
registry!!

HELPPPPPPP anyone?



Glyn Meek

 

[Dmitriy Lapshin [C# / .NET MVP]]

If desktop.dll is a .NET assembly, try registering it with regasm.exe and
specifying the /codebase option.

In a setup project, create a custom action and either launch regasm.exe with
/codebase (ugly as it will bring up a console window), or use
System.Runtime.InteropServices.RegistrationServices with the
AssemblyRegistrationFlags.SetCodeBase turned on.

Sincerely,
Dmitriy Lapshin [C# / .NET MVP]
Bring the power of unit testing to the VS .NET IDE today!
http://www.x-unity.net/teststudio.aspx

 

[Dmitry Streblechenko \(MVP\)]

Since you customized the dll to use custom class names and GUIDs, you need
to be careful about how you create the objects: if you use the regular
"new", the compiler hardcodes the class GUID, which is obviously missing.
Try to use something like

Type t = Type.GetTypeFromProgID("MyDll.MyMailItem");
SafeMailItem sItem = (SafeMailItem) Activator.CreateInstance(t);


Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

 

[Dmitriy Lapshin [C# / .NET MVP]]

Dmitry,

I guess you're the author of Outlook Redemption

See, the original poster says the DLL works fine on his development
computer - and it stops working when deployed to another computer. As we
know, the GUIDs cannot change if a DLL is just being copied to another
machine. Therefore, it is unlikely that the problem is with hard-coded
GUIDs. On the other hand, .NET has specific rules on where to search for an
assembly. Once a COM-visible assembly is registered without the /codebase
option (which probably happens in the original poster's installer), the
Fusion loader might be unable to find it when an instance of an object from
this assembly is requested. The /codebase option guarantees the loader is
always able to find and load the assembly and to create a COM-Callable
Wrapper for the requested object instance.

 

[Dmitry Streblechenko \(MVP\)]

Actually Redemption allows to customize the dll to change the class names
and GUIDs - this way the library does not even look like the original dll.
Just a security feature
..Net hardcodes some GUIDs at compile time, and the trick is trying to avoid
that using GetTypeFromProgID.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Dmitry,

I guess you're the author of Outlook Redemption

See, the original poster says the DLL works fine on his development
computer - and it stops working when deployed to another computer. As we
know, the GUIDs cannot change if a DLL is just being copied to another
machine. Therefore, it is unlikely that the problem is with hard-coded
GUIDs. On the other hand, .NET has specific rules on where to search for an
assembly. Once a COM-visible assembly is registered without the /codebase
option (which probably happens in the original poster's installer), the
Fusion loader might be unable to find it when an instance of an object from
this assembly is requested. The /codebase option guarantees the loader is
always able to find and load the assembly and to create a COM-Callable
Wrapper for the requested object instance.

--
Sincerely,
Dmitriy Lapshin [C# / .NET MVP]
Bring the power of unit testing to the VS .NET IDE today!
http://www.x-unity.net/teststudio.aspx

Since you customized the dll to use custom class names and GUIDs, you need
to be careful about how you create the objects: if you use the regular
"new", the compiler hardcodes the class GUID, which is obviously missing.
Try to use something like

Type t = Type.GetTypeFromProgID("MyDll.MyMailItem");
SafeMailItem sItem = (SafeMailItem) Activator.CreateInstance(t);


Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool



this
is registered -
ie Basic,
and