Add a "using" directive to a C# component.

Replies to This Discussion

Permalink Reply by David Rutten on January 7, 2015 at 3:58am

You cannot yourself add using statements, you have to add references to assemblies via the menu of the C# component. All namespaces in the referenced assemblies will be imported.

Permalink Reply by Riccardo Majewski on January 7, 2015 at 5:02am

Thanks for the reply!

Do you mean the "Manage Assemblies..." voice in the right-click menu?

So I have to add a .dll library?

Permalink Reply by Riccardo Majewski on May 11, 2015 at 1:46am

I still need help here from my last question...

Like, also... add a "using Grasshopper.Kernel.Special" as you stated here:

http://www.grasshopper3d.com/forum/topics/scripting-sliders?id=2985...

How to do that?

Permalink Reply by Giulio Piacentino on May 11, 2015 at 2:15am

If you need these types just a few times, simply write the full name, like Grasshopper.Kernel.Special.MyNeededType. Does it help?

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Riccardo Majewski on May 11, 2015 at 2:19am

Yes, somehow....

But still, how to add all the types to the whole script?

Also, what about external usings? Must be .dll linked?

Permalink Reply by Giulio Piacentino on May 11, 2015 at 3:07am

"using" in C# simply provides abbreviations for names of types in a namespace. It does not add references to types defined in other assemblies. Also, I do not think that there is a way in Grasshopper to add "using"s to Grasshopper namespaces. Simply refer to those types with their full name for now.

>>Also, what about external usings? Must be .dll linked?

Yes, of course, it needs to be linked. The CLR (Common Language Runtime) will not know enough to actually use the types just by implying them with the using statement. "using" also does not tell the runtime where to find the needed types, e.g., the .dll file location.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Riccardo Majewski on May 11, 2015 at 3:08am

Thanks a lot!

Permalink Reply by Ewa Kus on May 13, 2015 at 10:11am

Hi, did it work for you?

I did the same with:

System.IO.Compression.ZipFile.CreateFromDirectory,

but somehow constantly end up with an error:

Error (CS0518): Pre-defined type "System.Object" is not defined or imported.

Do you know what am I doing wrong?

Thanks in advance!

Ewa