Accessing Excel from ISE Eiffel

[andersoxie]

Hej

I plan to do a small application that reads from and writes to an MS
Excel sheet. Since I have not implemented any similar application
earlier I wonder if somebody has an example that I can start from?

Regards

Anders


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[Colin LeMahieu]

I don't have an example but I can point you in a direction.  I'd make
an Eiffel.NET project and use the Excel interop assembly for accessing
Excel.

--- In eiffel_software@..., "andersoxie" <anders@...> wrote:

>
> Hej
>
> I plan to do a small application that reads from and writes to an MS
> Excel sheet. Since I have not implemented any similar application
> earlier I wonder if somebody has an example that I can start from?
>
> Regards
>
> Anders
>

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[Emmanuel Stapf [ES]]

> I don't have an example but I can point you in a direction.  
> I'd make an Eiffel.NET project and use the Excel interop
> assembly for accessing Excel.

You can also use the EiffelCOM wizard to wrap the Excel COM component in
classic Eiffel.

Regards,
Manu


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[Peter Gummer-2]

Anders wrote:


> I plan to do a small application that reads from and writes to an MS
> Excel sheet. Since I have not implemented any similar application
> earlier I wonder if somebody has an example that I can start from?

I did that a few years ago, utilising EiffelCOM. I used that approach
because our customer at the time insisted that they did not want to install
.NET. I made some progress, but then the cutomer realised that installing
.NET is no big deal on a Windows machine, so I switched to doing it via .NET
and COM Interop.

The .NET COM Interop approach is far easier than EiffelCOM. Also, EiffelCOM
compile times are extremely slow and the resulting executable is huge. I
would highly recommend that you do it in .NET.

- Peter Gummer



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[andersoxie]

Hej

I started to try with accessing .NET components at Windows XP and I
was
able to access MS Outlook that way. Since I need the application at
Windows 2000 I investigated further the .NET track but my
investigation
ended with the conclusion that .NET is not supported at Windows 2000,
or at least the MS connection to Excel etc.
Then I tried to use the EiffelCOM Wizard and tried to build a
connection to Excel.exe but it failed during building since I only
used
the freeware compiler automatically installed by Eiffel Studio. I
thought that maybe one need the MS C compiler,
when using that part of Eiffel Studio, and tried to instal the
recommended version of the MS C compiler but that version did not
support Windows 2000.

I would of course prefer to upgrade to Windows XP or Windows Vista
but that is at the moment not an option.

Regards

Anders


--- In eiffel_software@..., "Emmanuel Stapf [ES]"
<manus@...> wrote:
>
> > I don't have an example but I can point you in a direction.  
> > I'd make an Eiffel.NET project and use the Excel interop
> > assembly for accessing Excel.
>
> You can also use the EiffelCOM wizard to wrap the Excel COM
component
in
> classic Eiffel.
>
> Regards,
> Manu
>



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[Peter Gummer-2]

Anders wrote:
> ... Since I need the application at Windows 2000
> I investigated further the .NET track but my investigation ended
> with the conclusion that .NET is not supported at Windows 2000,
> or at least the MS connection to Excel etc.


I have used .NET on Windows 2000, including EiffelStudio 5.6 with .NET 1.1
on Windows 2000. I think I had upgraded to Windows XP when I did the Excel
work, but I see no reason why what I wouldn't have worked on Windows 2000.

What problem did you discover?

- Peter Gummer



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[andersoxie]

Hej

First the compiler recommended for Eiffel Studio 6.1 is this one:

"Windows SDK for Windows Server 2008 and .NET Framework 3.5"

When reading the instructions at the download page the System
Requirements it states are:

Supported Operating Systems: Windows Server 2003; Windows Server
2008; Windows Vista; Windows XP




Then for .NET I found this system requirement for using the
connections to MS Office:

Office XP PIAs
Brief Description
Download the Office XP PIAs and use them to develop Office XP
solutions with Visual Studio .NET.
Supported Operating Systems: Windows XP



Maybe the solution is to use an older version of Eiffel Studio. THen
I probably can use an older version of the MS compiler (if it is
still available) and also try to find an older version of the PIAs.


Regards

Anders



--- In eiffel_software@..., "Peter Gummer" <p-gummer@...>
wrote:
>
> Anders wrote:
> > ... Since I need the application at Windows 2000
> > I investigated further the .NET track but my investigation ended
> > with the conclusion that .NET is not supported at Windows 2000,
> > or at least the MS connection to Excel etc.
>
>
> I have used .NET on Windows 2000, including EiffelStudio 5.6
with .NET 1.1
> on Windows 2000. I think I had upgraded to Windows XP when I did
the Excel
> work, but I see no reason why what I wouldn't have worked on
Windows 2000.
>
> What problem did you discover?
>
> - Peter Gummer
>



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[Peter Gummer-2]

Anders wrote:

> Then for .NET I found this system requirement for using the
> connections to MS Office:
>
> Office XP PIAs
> Brief Description
> Download the Office XP PIAs and use them to develop Office XP
> solutions with Visual Studio .NET.
> Supported Operating Systems: Windows XP
>
> Maybe the solution is to use an older version of Eiffel Studio. THen
> I probably can use an older version of the MS compiler (if it is
> still available) and also try to find an older version of the PIAs.

Hi Anders,

I suspect that this will work on Windows 2000. Have you tried it? (The fact
that Microsoft doesn't mention Windows 2000 as "supported" would, I suspect,
be due to the fact that Microsoft probably doesn't support Windows 2000 any
more. The compiler and the PIAs probably work, despite the lack of official
support.)

I'm using EiffelStudio 6.1 with the Visual Studio 2005 compiler, by the way.
You don't have to use the "recommended" C compiler. So stick with 6.1, and
try the C compiler and PIAs: they probably work.

If you find that they don't work, you have the option of building your own
IAs (Interop Assemblies) for Excel, rather than using Microsoft's PIAs
(Primary Interop Assemblies). Building your own IAs has some advantages,
despite Microsoft's recommendations to the contrary. I used my own Excel IAs
for the application I built a couple of years ago. One thing to beware of is
that Micrsoft's PIAs are not CLS-compliant: this made them unusable by
EiffelStudio 5.6 (although I think Paul Bates implemented a work-around in
EiffelStudio 5.7 for this Microsoft bug). It only takes a minute or so to
build your own IAs, once you know how.

- Peter Gummer



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[andersoxie]

OK

I will try with an older compiler but with Eiffel Studio 6.1. I tried
to install the recommended compiler at Windows 2000 but it did not
work to install it, at least not directly from the MS download site.
Maybe due to firewall-problems. I will see what I can find out.
I will then try to build my own IA. Do you know were to start to read
about that?

Regards

Anders

--- In eiffel_software@..., "Peter Gummer" <p-gummer@...>
wrote:

>
> Anders wrote:
> > Then for .NET I found this system requirement for using the
> > connections to MS Office:
> >
> > Office XP PIAs
> > Brief Description
> > Download the Office XP PIAs and use them to develop Office XP
> > solutions with Visual Studio .NET.
> > Supported Operating Systems: Windows XP
> >
> > Maybe the solution is to use an older version of Eiffel Studio.

THen
> > I probably can use an older version of the MS compiler (if it is
> > still available) and also try to find an older version of the
PIAs.
>
> Hi Anders,
>
> I suspect that this will work on Windows 2000. Have you tried it?
(The fact
> that Microsoft doesn't mention Windows 2000 as "supported" would, I
suspect,
> be due to the fact that Microsoft probably doesn't support Windows
2000 any
> more. The compiler and the PIAs probably work, despite the lack of
official
> support.)
>
> I'm using EiffelStudio 6.1 with the Visual Studio 2005 compiler, by
the way.
> You don't have to use the "recommended" C compiler. So stick with
6.1, and
> try the C compiler and PIAs: they probably work.
>
> If you find that they don't work, you have the option of building
your own
> IAs (Interop Assemblies) for Excel, rather than using Microsoft's
PIAs
> (Primary Interop Assemblies). Building your own IAs has some
advantages,
> despite Microsoft's recommendations to the contrary. I used my own
Excel IAs
> for the application I built a couple of years ago. One thing to
beware of is
> that Micrsoft's PIAs are not CLS-compliant: this made them unusable
by
> EiffelStudio 5.6 (although I think Paul Bates implemented a work-
around in
> EiffelStudio 5.7 for this Microsoft bug). It only takes a minute or
so to
> build your own IAs, once you know how.
>
> - Peter Gummer
>



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[Peter Gummer-2]

Anders wrote:

> I will then try to build my own IA. Do you know were to start to read
> about that?

Using Microsoft's PIA is easier, if it works (which I think it will).

But if you do want to build your own IA, it's not hard. The first question is: what is the oldest version of Excel that you need to support? Microsoft recommends always using the exact PIA for the version of Excel that it is calling; but in practice there seems to be no problem using an IA built for an older version of Excel to call a newer version of Excel (unless you want to call a feature available in the newer version that did not exist in the old version, which won't work, of course, because the feature does not exist in the old IA).

So, here's how to build the IAs:
  1.. Get a machine with the oldest version of Excel that you are going to support. (Maybe you already have the correct version installed. If not, don't install an old version over the top of a new version!)
  2.. Decide what name you want to give the IAs. I chose assembly names that clearly identified the version of Office and that they were not Microsoft's PIAs, e.g., Anders.Interop.Excel2000.dll. Note that Microsoft uses these names:
    a.. Office.dll, for things shared by different Office applications, has the namespace Microsoft.Office.Core.

    b.. Microsoft.Vbe.Interop.dll, for the Visual Basic projects editor, has the namespace Microsoft.Vbe.Interop.

    c.. Microsoft.Office.Interop.Excel.dll, for Excel-specific stuff, has the namespace Microsoft.Office.Interop.Excel.

  3.. Open a Visual Studio .NET command prompt.
  4.. Run tlbimp.exe, Microsoft's tool for generating IAs from a COM type library, once for each IA. For example, you might run these commands on a machine with Excel 2000 installed:
    a.. tlbimp "C:\Program Files\Microsoft Office\Office\MSO9.DLL" /out:Anders.Interop.Office2000.dll /sysarray
    b.. tlbimp "C:\Program Files\Common Files\Microsoft Shared\VBA\VBA6\VBE6EXT.OLB" /out:Anders.Interop.VBIDE2000.dll /reference:Anders.Interop.Office2000.dll /sysarray
    c.. tlbimp "C:\Program Files\Microsoft Office\Office\Excel9.OLB" /out:Anders.Interop.Excel2000.dll /reference:Anders.Interop.Office2000.dll /reference:Anders.Interop.VBIDE2000.dll /sysarray

That's it. There are other options you can change (choosing your own namespace, strong-naming them with your own key, etc.), but those are the basic steps.

Don't install these IAs in the GAC of development or deployment machines. When deploying an application, copy the IAs to the deployment directory, with the rest of the application.
A couple of Office Interop references that I found useful:

[1] http://www.samspublishing.com/articles/printerfriendly.asp?p=27219, "The Essentials for Using COM in Managed Code", Adam Nathan.

[2] "Microsoft .NET Development for Microsoft Office", Andrew Whitechapel, Microsoft Press, 2005.


- Peter Gummer

[Non-text portions of this message have been removed]


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[andersoxie]

Thanks for the detailed desription. However, I am still struggling
with the MS compiler. I found this and thought it was OK.

.NET Framework 2.0 Software Development Kit (SDK) (x86)

There was also a note:

NOTE: This version of the .NET Framework SDK SDK has been superceded
by the Windows SDK for Windows Server 2008 and .NET Framework 3.5.

Since that version was recommended for Eiffel Studio 6.1 I thought
that this must be a good candidate for Windows 2000. I installed it
and it worked nice.
Then I tried to install the Eiffel Studio 6.1 but it complains that
it can not find a compatible MS compiler. Does it detect the compiler
and reject it because it is old or does it not find it at all?
I can not find out if I can help the installation script to find the
compiler. Maybe there is no compiler in that version of the SDK.

Regards

Anders

--- In eiffel_software@..., "Peter Gummer" <p-gummer@...>
wrote:
>
> Anders wrote:
>
> > I will then try to build my own IA. Do you know were to start to
read
> > about that?
>
> Using Microsoft's PIA is easier, if it works (which I think it
will).
>
> But if you do want to build your own IA, it's not hard. The first
question is: what is the oldest version of Excel that you need to
support? Microsoft recommends always using the exact PIA for the
version of Excel that it is calling; but in practice there seems to
be no problem using an IA built for an older version of Excel to call
a newer version of Excel (unless you want to call a feature available
in the newer version that did not exist in the old version, which
won't work, of course, because the feature does not exist in the old
IA).
>
> So, here's how to build the IAs:
>   1.. Get a machine with the oldest version of Excel that you are
going to support. (Maybe you already have the correct version
installed. If not, don't install an old version over the top of a new
version!)
>   2.. Decide what name you want to give the IAs. I chose assembly
names that clearly identified the version of Office and that they
were not Microsoft's PIAs, e.g., Anders.Interop.Excel2000.dll. Note
that Microsoft uses these names:
>     a.. Office.dll, for things shared by different Office
applications, has the namespace Microsoft.Office.Core.
>
>     b.. Microsoft.Vbe.Interop.dll, for the Visual Basic projects
editor, has the namespace Microsoft.Vbe.Interop.
>
>     c.. Microsoft.Office.Interop.Excel.dll, for Excel-specific
stuff, has the namespace Microsoft.Office.Interop.Excel.
>
>   3.. Open a Visual Studio .NET command prompt.
>   4.. Run tlbimp.exe, Microsoft's tool for generating IAs from a
COM type library, once for each IA. For example, you might run these
commands on a machine with Excel 2000 installed:
>     a.. tlbimp "C:\Program Files\Microsoft
Office\Office\MSO9.DLL" /out:Anders.Interop.Office2000.dll /sysarray
>     b.. tlbimp "C:\Program Files\Common Files\Microsoft
Shared\VBA\VBA6
\VBE6EXT.OLB" /out:Anders.Interop.VBIDE2000.dll /reference:Anders.Inte
rop.Office2000.dll /sysarray
>     c.. tlbimp "C:\Program Files\Microsoft
Office\Office\Excel9.OLB" /out:Anders.Interop.Excel2000.dll /reference
:Anders.Interop.Office2000.dll /reference:Anders.Interop.VBIDE2000.dll
 /sysarray
>
> That's it. There are other options you can change (choosing your
own namespace, strong-naming them with your own key, etc.), but those
are the basic steps.
>
> Don't install these IAs in the GAC of development or deployment
machines. When deploying an application, copy the IAs to the
deployment directory, with the rest of the application.
> A couple of Office Interop references that I found useful:
>
> [1] http://www.samspublishing.com/articles/printerfriendly.asp?
p=27219, "The Essentials for Using COM in Managed Code", Adam Nathan.
>
> [2] "Microsoft .NET Development for Microsoft Office", Andrew
Whitechapel, Microsoft Press, 2005.
>
>
> - Peter Gummer
>
> [Non-text portions of this message have been removed]
>



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[Peter Gummer-2]

Anders wrote:

> ... However, I am still struggling
> with the MS compiler. I found this and thought it was OK.
>
> .NET Framework 2.0 Software Development Kit (SDK) (x86)
>
> There was also a note:
>
> NOTE: This version of the .NET Framework SDK SDK has been superceded
> by the Windows SDK for Windows Server 2008 and .NET Framework 3.5.
>
> Since that version was recommended for Eiffel Studio 6.1 ...

Where does it say that this is recommended for EiffelStudio 6.1?

http://dev.eiffel.com/Installing_Microsoft_C_compiler_6.1_and_older says
that 6.1 does not support Visual Studio 2008. It does not mention "Windows
SDK for Windows Server 2008 and .NET Framework 3.5", and I'm not sure if
they have the same C compiler.

That page recommends this compiler for EiffelStudio 6.1:

http://download.microsoft.com/download/a/7/7/a7767f09-0136-4a96-a1f8-276bf0ee31fa/Setup.exe

- Peter Gummer



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[andersoxie]

Hej

I looked at the page:

http://dev.eiffel.com/Installing_Microsoft_C_compiler

and did not notice that it was different for different versions of
Eiffel Studio.

The get problems at the windows 2000 computer with the link to
Setup.exe (below). At the moment I do not know why. I have been able
to install older versions of MS compilers but Eiffel Studio does not
seem to recognize them. It works OK at my XP computer.
I get the message already when trying to start it that it ".... is
not a valid Win32 application".

Regards

Anders




--- In eiffel_software@..., "Peter Gummer" <p-gummer@...>
wrote:

>
> Anders wrote:
> > ... However, I am still struggling
> > with the MS compiler. I found this and thought it was OK.
> >
> > .NET Framework 2.0 Software Development Kit (SDK) (x86)
> >
> > There was also a note:
> >
> > NOTE: This version of the .NET Framework SDK SDK has been

superceded
> > by the Windows SDK for Windows Server 2008 and .NET Framework 3.5.
> >
> > Since that version was recommended for Eiffel Studio 6.1 ...
>
>
> Where does it say that this is recommended for EiffelStudio 6.1?
>
> http://dev.eiffel.com/Installing_Microsoft_C_compiler_6.1_and_older 
says
> that 6.1 does not support Visual Studio 2008. It does not
mention "Windows
> SDK for Windows Server 2008 and .NET Framework 3.5", and I'm not
sure if
> they have the same C compiler.
>
> That page recommends this compiler for EiffelStudio 6.1:
>
> http://download.microsoft.com/download/a/7/7/a7767f09-0136-4a96-
a1f8-276bf0ee31fa/Setup.exe
>
> - Peter Gummer
>



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[andersoxie]

Hej

since installing a newer version of the compiler seems not possible I
tried to install Eiffel Studio 5.7. It looks OK until it starts the
compilation. I get an error message from the C-compilation that I
know I have seen earlier but I can not remember how to fix it. I have
set the different ISE_XXX environment variables and also the C-
compiler path,include etc according to a bat-file that was inlcuded
in the installation of the MS C compiler.
I suppose that the problem is du to spaces in the path somewhere
since the message looks like this:

`C:\Program` is not recognized as an internal or external command,
operable program or batch file.

Regards

Anders


--- In eiffel_software@..., "andersoxie" <anders@...>
wrote:

>
> Hej
>
> I looked at the page:
>
> http://dev.eiffel.com/Installing_Microsoft_C_compiler
>
> and did not notice that it was different for different versions of
> Eiffel Studio.
>
> The get problems at the windows 2000 computer with the link to
> Setup.exe (below). At the moment I do not know why. I have been

able
> to install older versions of MS compilers but Eiffel Studio does
not

> seem to recognize them. It works OK at my XP computer.
> I get the message already when trying to start it that it ".... is
> not a valid Win32 application".
>
> Regards
>
> Anders
>
>
>
>
> --- In eiffel_software@..., "Peter Gummer" <p-gummer@>
> wrote:
> >
> > Anders wrote:
> > > ... However, I am still struggling
> > > with the MS compiler. I found this and thought it was OK.
> > >
> > > .NET Framework 2.0 Software Development Kit (SDK) (x86)
> > >
> > > There was also a note:
> > >
> > > NOTE: This version of the .NET Framework SDK SDK has been
> superceded
> > > by the Windows SDK for Windows Server 2008 and .NET Framework

3.5.
> > >
> > > Since that version was recommended for Eiffel Studio 6.1 ...
> >
> >
> > Where does it say that this is recommended for EiffelStudio 6.1?
> >
> >
http://dev.eiffel.com/Installing_Microsoft_C_compiler_6.1_and_older 

> says
> > that 6.1 does not support Visual Studio 2008. It does not
> mention "Windows
> > SDK for Windows Server 2008 and .NET Framework 3.5", and I'm not
> sure if
> > they have the same C compiler.
> >
> > That page recommends this compiler for EiffelStudio 6.1:
> >
> > http://download.microsoft.com/download/a/7/7/a7767f09-0136-4a96-
> a1f8-276bf0ee31fa/Setup.exe
> >
> > - Peter Gummer
> >
>

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[Emmanuel Stapf [ES]]

I think you can stick with 6.1, but since it won't automatically recognize
VS2008, you can simply launch EiffelSTudio from a Visual Studio .NET 2008
DOS console and it should work just fine.

Manu

> -----Original Message-----
> From: eiffel_software@...
> [mailto:eiffel_software@...] On Behalf Of andersoxie
> Sent: Wednesday, April 23, 2008 10:06 AM
> To: eiffel_software@...