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    <p>If this is what gets generated by the LINQ to SQL designer:</p> <pre><code>partial void InsertClass1(Class1 instance); </code></pre> <p>and you have an implementation in a <code>partial</code> class:</p> <pre><code>partial void InsertClass1(Class1 instance) { ...call stored procedure... } </code></pre> <p>you could instead have a virtual method in <code>Class1</code> to represent that operation:</p> <pre><code>protected virtual void Insert(Class1 instance) { ...call stored procedure... } </code></pre> <p>and call it from <code>Class1</code>'s <code>partial</code> method:</p> <pre><code>partial void InsertClass1(Class1 instance) { Insert(instance); } </code></pre> <p>and override it in <code>Class2</code>:</p> <pre><code>protected override void Insert(Class1 instance) { ...call different stored procedure... } </code></pre> <p>The only catch is that you will have to cast to <code>Class2</code> in the overridden method, but it will always succeed.</p>
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    1. POHow do you setup custom Insert/Update/Delete methods to inherited sub-clasess in LinqToSql?
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    1. USBryan Watts
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    1. POHow do you setup custom Insert/Update/Delete methods to inherited sub-clasess in LinqToSql?
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    1. COI'm refering to the ORM designer and the insert/update/delete methods that you can use to specify which sp to run when SubmitChanges gets called. I think what you are saying is to basically do away with the SubmitChanges approach and write my own insert methods. Yes this is ok, but kind of defeats the purpose of using the ORM and means having to maintain my own methods instead of leaving it up to the auto-generator thingy. What I really hoped was that setting the insert method in the ORM on a sub-class would propergate up the heirachy, but it doesn't look like it does. Thanks though.
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    2. COThat's not what I meant, actually. The calling code with InsertOnSubmit and SubmitChanges would remain exactly the same. I am suggesting a new method in the Class1 entity to get around the limitation of the designer. It would still be fully encapsulated within the entities. I understand the frustration about it not just working the way you have it, though.
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    3. COSorry, I think I got my own wires crossed. I looked over your solution again and with once I understood exactly what you were getting at it suddenly clicked. So I didn't need to rely on the designer, just use the datacontext's partial class (didn't realise i could do that either). I'll add what I did to my post. Many thanks Bryan, saved me bacon as I'm pushing for us to be using LinqToSql and LinqToEntities in future.
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