Error on creating Database Controller

HI

I am a beginner in VS2012 ASP.net MVC. I am trying to do a page for Login with Database. and i have created a model with the following code

HTML Code:

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public class UserMain
    {
        public class UserMaintenance
        {
            public int UserID { get; set; }
            public string UserName { get; set; }
            public string Email { get; set; }
         
        }
        public class ConnLogin : DbContext
        {
            public DbSet<UserMaintenance> UserMaintenance { get; set; }
        }
    }

---

and from this am trying to create a controller but it displays the following error.

HTML Code:

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'Login.Models.Usermain' is not part of the specified 'Login.Models.Usermain+ConnLogin' Class, and the 'Login.Models.Usermain+ConnLogin' class couldnt be modified to add a 'Dbset<Login.Models.UserMain>' property to it. (For example, the 'Login.Modeules.UserMain+ConnLogin' class might be in a compiled assemply.)

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Please help me...i am stuck here for two days....

Your class seems to imply that it's called UserMain but the error message states that it's Usermain.