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POApplication error with SQL CE 4.0 and ASP.NET MVC 3
 

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  1. POApplication error with SQL CE 4.0 and ASP.NET MVC 3
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    <p>I have problem with rebuilding db after Model have been changed/updated. I have three table inside one db file "Posts", "Threads" and "Relations". If i run app and post new thread everything seem fine, I can see thread. If I try to add post on the thread it throws an error saying it cannot find table by name "Thread". If I check "Database Explorer" in Visual Web Developer i can only see table "Posts" which is awkward. Now I read somewhere that db is not created until first use of model (saving?).</p> <p>My models setup is:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data.Entity; using System.Data.Entity.Database; using System.ComponentModel.DataAnnotations; using System.Data.Entity.ModelConfiguration; namespace aspnet_forum.Models { public class Threads { public int ID { get; set; } [Required] public string Name { get; set; } [Required] public string Author { get; set; } public DateTime Date { get; set; } public string Slug { get; set; } } public class ThreadsDBContext : DbContext { public DbSet&lt;Threads&gt; Threads { get; set; } protected override void OnModelCreating(ModelBuilder modelBuilder) { DbDatabase.SetInitializer(new MyThreadsDBContextInitializer()); base.OnModelCreating(modelBuilder); } } public class MyThreadsDBContextInitializer : DropCreateDatabaseIfModelChanges&lt;ThreadsDBContext&gt; { protected override void Seed(ThreadsDBContext dbContext) { // seed data base.Seed(dbContext); } } } </code></pre> <p>I also used "DropCreateDatabaseAlways" resulting same error. Posts model is same as Thread with additional field "text" and Posts name where relevant.</p> <p>Relations model:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel.DataAnnotations; using System.Data.Entity; using System.Data.Entity.Database; using System.Data.Entity.ModelConfiguration; namespace aspnet_forum.Models { public class Relations { public int ID { get; set; } [ForeignKey("Threads")] public int ThreadID { get; set; } //public virtual Threads Thread { get; set; } [ForeignKey("Posts")] public int PostID { get; set; } //public virtual Posts Post { get; set; } } public class RelationsDBContext : DbContext { public DbSet&lt;Relations&gt; Relations { get; set; } protected override void OnModelCreating(ModelBuilder modelBuilder) { DbDatabase.SetInitializer(new MyRelationsDBContextInitializer()); base.OnModelCreating(modelBuilder); } } public class MyRelationsDBContextInitializer : DropCreateDatabaseIfModelChanges&lt;RelationsDBContext&gt; { protected override void Seed(RelationsDBContext dbContext) { // seed data base.Seed(dbContext); } } } </code></pre> <p>My Web.Config is:</p> <pre><code>&lt;connectionStrings&gt; &lt;add name="ThreadsDBContext" connectionString="Data Source=|DataDirectory|Forum.sdf" providerName="System.Data.SqlServerCe.4.0"/&gt; &lt;add name="PostsDBContext" connectionString="Data Source=|DataDirectory|Forum.sdf" providerName="System.Data.SqlServerCe.4.0"/&gt; &lt;add name="RelationsDBContext" connectionString="Data Source=|DataDirectory|Forum.sdf" providerName="System.Data.SqlServerCe.4.0"/&gt; &lt;/connectionStrings&gt; </code></pre> <p>I tried and created all tables and relations by hand and it all works as expected I just don't know if relations will work as expected.</p> <p>Trying to establish M2M relation between Threads, Posts and Relations table.</p> <p>PS: there is "EdmMetadata" table.</p>
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    1. This table or related slice is empty.
 

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