Hi,

I am trying to add a dll (created as a VC++ project) in VS2005 to a C#
project for a Smart Device.
Each time I try to add reference, an error message is thrown up
stating "Unable to add Dll".

Following are the steps I followed:

1. Add New Project -> VC++ -> Smart Device -> Win32 Smart Device
Project -> Dll
2. Build project (Test.dll). (empty dll project for testing)
3. In my C# project, Add reference -> Test.dll

At this point it throws up an error stating "A reference to Test.dll
could not be added".

I tried registering the Dll with "regasm" but even that threw an error
stating "Test.dll is not a valid .Net assembly"

Is there something wrong with the procedure followed by me or is it
some other issue (like an installation issue)?

Thanks in advance,
 Treadstone

You cannot add a native DLL as a reference. What you are probably trying to 
do is to P/Invoke some function in the native DLL in which case you need to 
write your P/Invoke declaration in your managed code.

Peter

-- 
Peter Foot
Microsoft Device Application Development MVP
www.peterfoot.net | www.inthehand.com
In The Hand Ltd - .NET Solutions for Mobility

"Treadstone"  wrote in message 
news:1186037839.364369.111270@q3g2000prf.googlegroups.com...

> Hi,
>
> I am trying to add a dll (created as a VC++ project) in VS2005 to a C#
> project for a Smart Device.
> Each time I try to add reference, an error message is thrown up
> stating "Unable to add Dll".
>
> Following are the steps I followed:
>
> 1. Add New Project -> VC++ -> Smart Device -> Win32 Smart Device
> Project -> Dll
> 2. Build project (Test.dll). (empty dll project for testing)
> 3. In my C# project, Add reference -> Test.dll
>
> At this point it throws up an error stating "A reference to Test.dll
> could not be added".
>
> I tried registering the Dll with "regasm" but even that threw an error
> stating "Test.dll is not a valid .Net assembly"
>
> Is there something wrong with the procedure followed by me or is it
> some other issue (like an installation issue)?
>
> Thanks in advance,
> Treadstone
> 

I dont think you can add non CLR dlls to a Compact app , You can call
them via pinvoke manually, but they need to be on the device
already .  You should be able to add the output to a cab deployment
project .

Considering all the pinvokle stuff you have to do to call native dlls
why do you think you can just add a reference ?

Regards,

Ben

On Aug 2, 4:57 pm, Treadstone  wrote:

> Hi,
>
> I am trying to add a dll (created as a VC++ project) in VS2005 to a C#
> project for a Smart Device.
> Each time I try to add reference, an error message is thrown up
> stating "Unable to add Dll".
>
> Following are the steps I followed:
>
> 1. Add New Project -> VC++ -> Smart Device -> Win32 Smart Device
> Project -> Dll
> 2. Build project (Test.dll). (empty dll project for testing)
> 3. In my C# project, Add reference -> Test.dll
>
> At this point it throws up an error stating "A reference to Test.dll
> could not be added".
>
> I tried registering the Dll with "regasm" but even that threw an error
> stating "Test.dll is not a valid .Net assembly"
>
> Is there something wrong with the procedure followed by me or is it
> some other issue (like an installation issue)?
>
> Thanks in advance,
>  Treadstone