Comments on: Understanding T4: <#@ include #> directive

By: Prasad

Prasad — Wed, 26 Aug 2009 04:36:21 +0000

Hi,
We want tot execute a t4 template file through our custom host. We can execute it if and only the Main.tt file doesnot includes any other .tt file in the include directives.

The Same file we can perform successfully through Visual studio.

Our code for custom host is as below:

CustomCmdLineHost host = new CustomCmdLineHost();
Engine engine = new Engine();
//Transform the text template.
string output = engine.ProcessTemplate(input, host);

It always gives the error as Loading the include file ‘D:\IncludedFile.tt’ returned a null or empty string.

As per the MSDN this error comes if the included file is empty, however its not.
http://msdn.microsoft.com/en-us/library/bb126242.aspx

Please suggest.

By: Oleg Sych

Oleg Sych — Mon, 25 May 2009 15:06:36 +0000

Hugo, I created work item 13146 for this problem and can fix it in the next release of T4 Toolbox in a couple of months.

By: hugo

hugo — Mon, 25 May 2009 14:50:33 +0000

Any new comments on this subject? Is the problem fixed yet?

Kind regards ^_^

By: hugo

hugo — Mon, 04 May 2009 14:26:27 +0000

Cool, thanks !
Could you maybe do me a favor, and email me if the new version is available.

Anyway, Thank you very much for your speedy replies!

By: Oleg Sych

Oleg Sych — Thu, 30 Apr 2009 10:16:50 +0000

It turns out, this is something I overlooked in T4Toolbox. I’ll write it up as a bug on CodePlex. Thanks for pointing it out.

By: hugo

hugo — Thu, 30 Apr 2009 06:55:50 +0000

Yes … It does. But for some reason if it’s in a folder, it doesn’t.

By: Oleg Sych

Oleg Sych — Wed, 29 Apr 2009 11:26:46 +0000

Hugo, does it work when the project is directly in the solution and not in a sub-folder?

By: hugo

hugo — Wed, 29 Apr 2009 11:07:35 +0000

Hi, I have a small problem with using the AzMan.tt Template.
My solution is as follows:
- Solution
-> Folder
|-> AzManProject
|->AuthorizationStore.tt

Then I get the error:
The project C:\xxx\xx.csproj does not belong to the solution.

I’m geussing this is due to the fact that it can’t find:

Or, maybe something else ….
Any help would be appreciated

I can email someone a sample project, if they require more info.

By: Oleg Sych

Oleg Sych — Sun, 23 Nov 2008 14:19:09 +0000

Mike, I don’t think it’s possible for a directive processor generate code in the TransformText method. Take a look at virtual methods of the DirectoveProcessor class. If I understand correclty, a directive processor can provide class-level code and code for the Initialize method of GeneratedTextTransformation.

By: Mike Pagel

Mike Pagel — Thu, 20 Nov 2008 17:09:07 +0000

Just notice that in comment #2 your CM system removed the T4 statements. They looked like this

and

That should work.

Sorry about that,
Mike