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    <p>The order inserts/updates and deletes are made in the Entity Framework is dependent upon many things in the Entity Framework.</p> <p>For example if you insert a new Product in a new Category we have to add the Category before the Product.</p> <p>This means that if you have a large set of changes there are local ordering constraints that we must satisfy first, and indeed this is what we do.</p> <p>The order that you do things on the context can be in conflict with these rules. For example if you do this:</p> <pre><code>ctx.AddToProducts( new Product{ Name = "Bovril", Category = new Category {Name = "Food"} } ); </code></pre> <p>the effect is that the Product is added (to the context) first and then when we walk the graph we add the Category too.</p> <p>i.e. the insert order into the context is: </p> <pre><code>Product Category </code></pre> <p>but because of referential integrity constraints we must re-order like this before attempting to insert into the database:</p> <pre><code>Category Product </code></pre> <p>So this kind of local re-ordering is kind of non-negotiable.</p> <p>However if there are no local dependencies like this, you could in theory preserve ordering. Unfortunately we don't currently track 'when' something was added to the context, and for efficiency reason we don't track entities in order preserving structures like lists. As a result we can't currently preserve the order of unrelated inserts.</p> <p>However we were debating this just recently, so I am keen to see just how vital this is to you?</p> <p>Hope this helps</p> <p>Alex</p> <p>Program Manager Entity Framework Team</p>
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    1. COThanks for the explanation. It would certainly save me some time if it were supported, but I guess I could also generate my own custom primary keys to achieve the same effect.
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    2. COThere are some other responses to the question below. I got around the issue by ordering on timestamps or what not instead of the primary key.
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    3. COAny update on this? I have a situtation where my tables have a constraint on an Alternate Key, so there is no visible relationship on the model. (A.K. is userName, instead of userId). So how can I change the order of inserts, as of now, when I add the user and then add the user to a group, savechanges fails.
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