Transferring observable array to controller along with model

See more:

Binding

model

MVC4

Knockout.js

I want to transfer observable array along with model to controller. I did my surfing and found custom model binding is good for my situation.But again its given i can use controllerContext.HttpContext.Form.Get("Day"); where as Day is Day <input id="Day" name="Day" value="" type="text" />

i have used select and element of select is stored as observable array.... if i cant use array, i can use select name or id as above situation... how do i do it... coz select has many option...

and i m new to custom model binding so i m confusion which code i ve to put where...where do i put
custom binding code with IModelBinder interface