Calling Host Method from Workflow -

i want call method resides on host executable using execute workflow workflowinvoker.invoke.

i have found examples of via interface using [externaldataexchange], of these examples workflow 3.5, nothing 4 or 4.5. appears externaldataexchange has been deprecated on 4+.

does have example of doing in wf 4.5?

your host needs register extensions doing like:

yourwfapp.extensions.add<isomeinterface>(     () => { return anobjectthatimplmentsisomeinterface;}); 

then, activities can use extension doing:

isomeinterface hostinterface = activitycontext.getextension<isomeinterface>(); hostinterface.callthehost();