Entity Framework Duplicate type name within an assembly (6.1.0)

Question

I am not sure what is going on but I keep getting the following exception when doing a query. \"Duplicate type name within an assembly.\" I have not been able to find a solu

Answer 1

Must be correcting "select Users;" segment of code :

var BaseQuery = from Users in db.Users
        join UserInstalls in db.UserTenantInstalls on Users.ID equals UserInstalls.UserID
        join Installs in db.TenantInstalls on UserInstalls.TenantInstallID equals Installs.ID
        where
            Users.Username == Username
            && Users.Password == Password
            && Installs.Name == Install
        select Users;

Correction code :

select new { ID=Users.ID, F1= Users.forExampleField1,
             F2= UserInstalls.forExampleFild1, 
             F3= Installs.forExampleFild1 , 
             F4= Installs.forExampleFild2 };

The reason:

Foreign key fields in the class are present and "Linq" are not able to remove them which there was the following error:

Duplicate type name within an assembly

(Of course this problem Fault "entity framework" !)

I am a full explanation on this matter, But unfortunately my English is not very good and it is really hard for me to explain specialization, because I understand that many people do not understand what I mean. I apologize for this.