As far as i understand your code you are initializing two models
SuperVM as
picvm and
SubsCribe as
SubsCribe in your partialview result. You are not setting any value to the picvm.SubsCribe.SubscribeEmail. So instead of initializing model in you partialview result method send model data to the partialview method or set the value in partialview like
picvm.SubsCribe.SubscribeEmail = abc@some.com
but if you are sending data to the partialview method then please explain why are you using below code?
picvm = new SuperVM()
{
SubsCribe = new SubsCribe()
{
SubscribeEmail = picvm.SubsCribe.SubscribeEmail,
Subject =picvm.SubsCribe.Subject
}
};