Q: Add Data from Another Controller I want to add data from one controller to another, what should I make?
I have one controller e.g Name and another addName with entity data model view
 (index,create,delete,details) and AddName with index.
I want to add data from addName in Name Controller's model. Please help me.

A: Perhaps the Controllers, Actions, and Action Results article will shed some light on your issues. Note the tip which states 

"The Controller is a UI level abstraction…In well-factored apps it
  will not directly include data access or business logic, but instead
  will delegate to services handling these responsibilities"

.
The Overview of ASP.NET Core MVC article explains the MVC pattern. This article discusses the responsibilities of the Model, View, and Controller. In addition to explaining the benefits of adhering to the MVC pattern, there are links to additional articles regarding separation of concerns and the Single Responsibility Principal.
