The classes of a Model should be in one file or in several files? Or when to use them?

Question

Defining a model in ASP.NET MVC you can have the classes in one *.cs file or in multiple files. In one like this:

namespace App.Models
{

    public class User
    {
        public string Name{get;set;}
    }

    public class Message
    {
        public string Content{get;set;}
    }

}

Or in multiple *.cs saved on the Models folder?

Answer 1

It doesn't matter whether they're in one or multiple files. Though, there is a standard of having all of your types in their own .cs file.

ViewModels\User.cs:

namespace App.Models
{
    public class User
    {
        public string Name{get;set;}
    }
}

ViewModels\Message.cs:

namespace App.Models
{
    public class Message
    {
        public string Content{get;set;}
    }
}

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