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POEF5, code first exception ONLY on first database access: "FK_x...x' is not a constraint. Could not drop constraint"
 

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  1. POEF5, code first exception ONLY on first database access: "FK_x...x' is not a constraint. Could not drop constraint"
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    <p>This has been driving me crazy for days. I am using vs2012, EF5 code first, sql server 2012. This is on my development machine and <strong><em>I get the below exception when, and ONLY when, I hit the database the very first time</em></strong>. If, before I run my tests, I init the database, it throws the below exception, <strong>but not thereafter</strong>. If I run my tests, the first test fails because of this exception, <strong>but all my other tests pass</strong>. If I catch the exception and ignore it, <strong>all my tests pass without error</strong>. What is frustrating, is I've defined constraints, between those two tables, but don't know where 'Users_Id' is defined. I've also tried manually deleting the tables and running the vs2012 generated sql from my DbContext to recreate the table fresh, but nothing works. Any help would be much appreciated.</p> <p><strong>Here is the exception</strong></p> <p>*System.Data.SqlClient.SqlException: 'FK_dbo.UserProfiles_dbo.Users_Id' is not a constraint. Could not drop constraint. See previous errors.*</p> <p><strong>Here are my pocos</strong></p> <p><strong>User</strong></p> <pre><code>public class User : Entity&lt;User&gt;, IUser { public Guid Id { get; set; } // Nav property to UserProfile. public virtual UserProfile UserProfile { get; set; } public Guid SiteId { get; set; } public virtual Site Site { get; set; } } </code></pre> <p><strong>UserProfile</strong></p> <pre><code>public class UserProfile : Entity&lt;UserProfile&gt;, IUserProfile { // Points to User.Id public Guid Id { get; set; } // Nav property back to user. public virtual User User { get; set; } } </code></pre> <p><strong>Here's my code first definition of the two tables</strong> (other code left out for brevity):</p> <p><strong>EDIT: The relationship between the two tables is Id User.Id => UserProfile.Id</strong></p> <p><strong>User</strong></p> <pre><code>modelBuilder.Entity&lt;User&gt;().HasKey(p =&gt; p.Id); modelBuilder.Entity&lt;User&gt;().HasRequired(p =&gt; p.Site).WithMany(p =&gt; p.Users).HasForeignKey(p =&gt; p.SiteId); modelBuilder.Entity&lt;User&gt;() .HasRequired(p =&gt; p.UserProfile) .WithRequiredPrincipal(p =&gt; p.User) .WillCascadeOnDelete(true); </code></pre> <p><strong>UserProfile</strong></p> <pre><code>modelBuilder.Entity&lt;UserProfile&gt;().HasKey(p =&gt; p.Id); modelBuilder.Entity&lt;UserProfile&gt;().HasRequired(p =&gt; p.User); </code></pre>
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    1. USgangelo
    1. USgangelo
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      1. POEF5, code first exception ONLY on first database access: "FK_x...x' is not a constraint. Could not drop constraint"
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    1. COIt may have to do with the redundant `modelBuilder.Entity<UserProfile>().HasRequired(p => p.User);` (you already define this in `WithRequiredPrincipal`).
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      1. USGert Arnold
    2. CO@GertArnold - that wasn't it; if I comment out that out, still get the same exception :(
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      1. USgangelo
 

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