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POEntity Framework: complains of null id when entity id is set in code during SaveChanges
 

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  1. POEntity Framework: complains of null id when entity id is set in code during SaveChanges
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    <p>Lets assume the following code handling the SaveChanges event of a DataContext</p> <pre><code>void Context_SavingChanges(object sender, EventArgs e) { IEnumerable&lt;ObjectStateEntry&gt; objectStateEntries = from ose in this.ObjectStateManager.GetObjectStateEntries(EntityState.Added | EntityState.Modified | EntityState.Deleted) where ose.Entity != null select ose; foreach (ObjectStateEntry entry in objectStateEntries) { foreach (var field in entry.CurrentValues.DataRecordInfo.FieldMetadata) { var guid = Guid.NewGuid(); AuditEntry audit = AuditEntry.CreateAuditEntry( id: guid, entitySet: entry.EntitySet.Name, typeName: entry.Entity.GetType().Name, entityId: (entry.CurrentValues["Id"] as string) ?? ((entry.State == EntityState.Added) ? "New" : null), oldValue: (entry.State != EntityState.Added) ? entry.OriginalValues[field.FieldType.Name].ToString() : "New", newValue: (entry.State != EntityState.Deleted) ? entry.CurrentValues[field.FieldType.Name].ToString() : "Deleted", modifier: Environment.UserDomainName + "\\" + Environment.UserName, dbAction: Enum.GetName(typeof(EntityState), entry.State), field: field.FieldType.Name, dateStamp: DateTime.Now ); this.AuditEntries.AddObject(audit); } } } </code></pre> <p>When I create a new Entity and attempt to save it's changes I get this error:</p> <blockquote> <p>Cannot insert the value NULL into column 'Id', table 'TimeEF.dbo.AuditEntries'; column does not allow nulls. INSERT fails. The statement has been terminated.</p> </blockquote> <p>When as you can see I have set the Id, any ideas? Bug?</p>
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    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USNick Daniels
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POEntity Framework: complains of null id when entity id is set in code during SaveChanges
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      1. VTUpMod
    1. COAre you *positive* the record in question came from this code? Trace the SQL.
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      1. POEntity Framework: complains of null id when entity id is set in code during SaveChanges
      1. USCraig Stuntz
    2. CObreakpoint? see which line the exception is being thrown - check the ID.
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      1. POEntity Framework: complains of null id when entity id is set in code during SaveChanges
      1. USRPM1984
    3. CO1) Yes. This is the only place AuditEntries are created. And the entity has no associations.
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      1. POEntity Framework: complains of null id when entity id is set in code during SaveChanges
      1. USNick Daniels
 

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