Finding a resource in your layout is easy if you know the id:
LinearLayout l = FindViewById<LinearLayout>(Resource.Id.linearLayout1);
but say I have
String id = "linearLayout1";
How can I access the resource IDs and "find" the one I'm looking for?
You can use this: Resources#getIdentifier()
String id = "linearLayout1";
int resourceId = getResources().getIdentifier(id, "id", getPackageName());
Edit:
I didn't see the Xamarin tag. I am not familiar with Xamarin, but as far as I know, it mimics the Android API, so there should be a similar method available for that.