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POCreating DBContext Initializer Getting 'Type argument <context> does not inherit from or implement the constraint type 'System.Data.Entity.DBContext'
 

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  1. POCreating DBContext Initializer Getting 'Type argument <context> does not inherit from or implement the constraint type 'System.Data.Entity.DBContext'
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    <p>I am trying to initialize a database using Database.SetInitializer but I am getting a 'Type argument does not inherit from or implement the constraint type 'System.Data.Entity.DBContext' Error when my initializer class DOES inherit from DBContext. Any ideas? I'm new to Code First EF by the way!</p> <p>Context Class:</p> <pre><code>Imports System.Data.Entity Imports System.Collections.Generic Imports System.Data.Entity.Infrastructure Imports System.Configuration Public Class PropertyManagementContext Inherits DbContext #Region "Constructor" Public Sub New() MyBase.New("Data Source=WSBS2K3SQL;Initial Catalog=AQUARIUS_TEST;Persist Security Info=True;User ID=SomeUser;Password=SomePassword;") End Sub #End Region #Region "Tables" Public Complexes As DbSet(Of Complex) Public Buildings As DbSet(Of Building) Public Units As DbSet(Of Unit) Public Tenants As DbSet(Of Tenant) #End Region Protected Overrides Sub OnModelCreating(modelBuilder As DbModelBuilder) MyBase.OnModelCreating(modelBuilder) 'Set the Primary Keys modelBuilder.Entity(Of Complex).HasKey(Function(c) c.ComplexId) modelBuilder.Entity(Of Building).HasKey(Function(b) b.BuildingId).HasKey(Function(b) b.ComplexId) modelBuilder.Entity(Of Unit).HasKey(Function(u) u.UnitId).HasKey(Function(u) u.BuildingId) modelBuilder.Entity(Of Tenant).HasKey(Function(t) t.TenantId) 'Set Complex Primary Key to Identity(MS SQL Auto-Increment) modelBuilder.Entity(Of Complex).Property(Function(c) c.ComplexId) _ .HasDatabaseGeneratedOption(ComponentModel.DataAnnotations.DatabaseGeneratedOption.Identity) End Sub End Class </code></pre> <p>Initializer Class:</p> <pre><code>Imports System.Collections.Generic Imports System.Linq Imports System.Text Imports System.Data.Entity Public Class PropertyManagementInitializer Inherits DropCreateDatabaseAlways(Of PropertyManagementContext) Protected Overrides Sub Seed(context As PropertyManagementContext) MyBase.Seed(context) Dim complex As New Complex With { .Name = "SomeComplex", .City = "SomeCity", .Address = "SomeStreet", .PostalCode = "R2R2R2", .Type = "1" } context.Complexes.Add(complex) context.SaveChanges() End Sub End Class </code></pre> <p>Main Form where Database.SetInitializer() is called and giving the error:</p> <pre><code>Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Try Database.SetInitializer(Of PropertyManagementContext)(New PropertyManagementInitializer) Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub </code></pre>
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    1. USJustin Shep
    1. USJustin Shep
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