new MAPI.Session() does not work!?!?!?

[Gerry]

I am writing a program in C# which accesses data from Exchange. Code
snippets have been copied from a VB-program.

The VB-program does the following:

'create session and logon
objSession = CreateObject("MAPI.Session")

After this, everyhing works fine.

In c# this looks like:

'create session and logon
objSession = new MAPI.Session();

And this does not work!?!? I get an error stating that Outlook is not
the default client or that the mail client cannot fullfil the
messaging request. Then i also get an exception: ClassFactory cannot
supply requested class.

Can anyone help me on this one? Everything concentrates on the
creation of the session object. In VB.NET it works, in C# not?

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

Gerry,

I forgot to mention, the reason it doesn't work is that MAPI.Session
(when imported) is the name of an interface, not a class. VB6 obfuscated
classes and interfaces (quite poorly I might add). You can create an
instance of MAPI.SessionClass and it should work.

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

"Gerry" <ge*****************@logicacmg.com> wrote in message
news:49**************************@posting.google.c om...

I am writing a program in C# which accesses data from Exchange. Code
snippets have been copied from a VB-program.

The VB-program does the following:

'create session and logon
objSession = CreateObject("MAPI.Session")

After this, everyhing works fine.

In c# this looks like:

'create session and logon
objSession = new MAPI.Session();

And this does not work!?!? I get an error stating that Outlook is not
the default client or that the mail client cannot fullfil the
messaging request. Then i also get an exception: ClassFactory cannot
supply requested class.

Can anyone help me on this one? Everything concentrates on the
creation of the session object. In VB.NET it works, in C# not?

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

Gerry,

You might want to use CreateObject in C# as well, through the
Microsoft.VisualBasic library. You could set a reference to
Microsoft.VisualBasic and then access the static CreateObject method through
the Interaction class in the Microsoft.VisualBasic namespace. This should
give you the same results.

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

"Gerry" <ge*****************@logicacmg.com> wrote in message
news:49**************************@posting.google.c om...

I am writing a program in C# which accesses data from Exchange. Code
snippets have been copied from a VB-program.

The VB-program does the following:

'create session and logon
objSession = CreateObject("MAPI.Session")

After this, everyhing works fine.

In c# this looks like:

'create session and logon
objSession = new MAPI.Session();

And this does not work!?!? I get an error stating that Outlook is not
the default client or that the mail client cannot fullfil the
messaging request. Then i also get an exception: ClassFactory cannot
supply requested class.

Can anyone help me on this one? Everything concentrates on the
creation of the session object. In VB.NET it works, in C# not?