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POUpdateException: Operation is not valid due to the current state of the object when using Entity Framework and Oracle
 

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  1. POUpdateException: Operation is not valid due to the current state of the object when using Entity Framework and Oracle
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    <p>I'm attempting to add a new Entity object for persistence, however I'm getting an <a href="http://msdn.microsoft.com/en-us/library/system.data.updateexception.aspx" rel="nofollow">UpdateException</a> who's inner exception is an <a href="http://msdn.microsoft.com/en-us/library/system.invalidoperationexception.aspx" rel="nofollow">InvalidOperationException</a> with the message:</p> <blockquote> <p>Operation is not valid due to the current state of the object.</p> </blockquote> <p>Object being created:</p> <pre><code>var something = new SITE { EntityKey = new EntityKey("DataModelContainer.SITE", "SITE_ID", "ID"), SITE_COMMON_REFERENCE = "hello", SITE_ID = "hello" }; </code></pre> <p>which is then passed to:</p> <pre><code>public void ExportSiteData (SITE exportSiteData) { _context.SITE.AddObject(exportSiteData); _context.SaveChanges(); //&lt;-- Exception here } </code></pre> <p>The database is Oracle 11g and I can succesfully extract data via Entity Framework.</p> <p>I'm guessing the problem is more database side, however I can successfully populate it with both "hello" values with no key/referential integrity problems.</p> <p>I'd much appreciate being pointed in the right direction. Thanks</p> <p><strong>More code:</strong></p> <p>ExportSiteData is within <code>BillRepository</code> which implements <code>IDisposable</code>:</p> <pre><code>class BillRepository : IDisposable { private readonly DataModelContainer _context; public BillRepository() { _context = new DataModelContainer(); } public void ExportSiteData (SITE exportSiteData) { _context.SITE.AddObject(exportSiteData); _context.SaveChanges(); //&lt;-- Exception here } public void Dispose() { if (_context != null) { _context.Dispose(); } } } </code></pre> <p>and is called as such:</p> <pre><code>using (var repo = new BillRepository()) { repo.ExportSiteData(something); } </code></pre>
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    1. USSamuel Slade
    1. USm.edmondson
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    1. COdid you look at the Exception on the link that you posted as far as what could be causing the problem.. are you Closing the Connection anywhere in the Methods that you are calling that you may not be aware of..?
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      1. USMethodMan
    2. CO@DJKRAZE - Yea I read them both however there doesn't seem to be anything that helps me, I don't believe I'm closing the connection as I'm freshly creating the _context prior to calling: `_context = new DataModelContainer();`
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      1. POUpdateException: Operation is not valid due to the current state of the object when using Entity Framework and Oracle
      1. USm.edmondson
    3. COcan you paste that code.. perhaps there is something being done within that new before during or after.. I also noticed for the ID field how is that being set within your DB is that an Auto Gen Field..?
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      1. USMethodMan
 

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