# Can i use external DLLs?

**URL:** <https://forum.kirupa.com/t/can-i-use-external-dlls/273195>\
**Category:** flash\
**Created:** [October 12, 2008, 10:01pm UTC](https://forum.kirupa.com/t/can-i-use-external-dlls/273195 "2008-10-12T22:01:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![maorz1](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@maorz1](https://forum.kirupa.com/u/maorz1)\
**Post date:** [October 12, 2008, 10:01pm UTC](https://forum.kirupa.com/t/can-i-use-external-dlls/273195/1 "2008-10-12T22:01:14Z")

</div>

i have an Class libry that i wrote in C# for some application i did in c# windows forms and now i want to move the application from forms to flash but i dont want to rewrite all the classes and functions.  
i know that when i build the project in c# i get dll of the class librery.

can i use this dll in the flash and call his functions and classes? if so how???

i am totally new in AS3 (I know very good AS2) so can you give me the syntax of how to import the dll and how to call his functions?

tnx in a head (hhh)

maor