.net - linking c# gui project and library dll project -

.net - linking c# gui project and library dll project -

this snippet helloworld-like illustration illustrating framework goal trying achieve. goal of project command gui seperate piece of code in c# or vba, e.g. automation routine talks equipment , other pieces of software. gui there benefit of user not using automation, want automate pieces of gui if there

i trying link gui , com dll stated above without much success.

both projects work separately.

i have verified can phone call com dll functions.

i have verified simple gui works.

now have functions within gui callable com dll.

i thought easy adding other project , adding reference, doing wrong. it's funny because code completion makes seem close, can see screenshots.

gui project:

namespace gui_helloworld { public partial class mainwindow : window { public mainwindow() { initializecomponent(); } public void button1_click(object sender, routedeventargs e) { messagebox.show("hello world."); } public void button1_click() { //for sake of clicking through code - figure out right method later messagebox.show("hello world."); } } }

dll project:

namespace gui_com_lib { [system.runtime.interopservices.comvisible(true)] //- may not necessary in cases? public class zz_gui_helloworld_api_demo { public void selhello() { gui_helloworld.mainwindow.button1_click(); // error! }

when adding reference gui com_lib dll project, can see gui in pop menu, it's seeing it's there! when type gui_helloworld.mainwindow., no public functions come expect see button1_click()

you need instance of window object:

public void selhello() { var mywindow = new gui_helloworld.mainwindow(); mywindow.button1_click(); }

c# .net visual-studio user-interface