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POExecuting Method Against DataContext Returning Inserted ID
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copied!<p>Is there any way to use <code>DataContext</code> to execute some explicit SQL and return the auto-increment primary key value of the inserted row <em>without</em> using <code>ExecuteMethodCall</code>? All I want to do is insert some data into a table and get back the newly created primary key but without using LINQ (I use explicit SQL in my queries, just using LINQ to model the data).</p> <p>Cheers</p> <p><strong>EDIT</strong>: Basically, I want to do this:</p> <pre><code>public int CreateSomething(Something somethingToCreate) { string query = "MyFunkyQuery"; this.ExecuteCommand(query); // return back the ID of the inserted value here! } </code></pre> <p><strong>SOLUTION</strong></p> <p>This one took a while. You have to pass a reference for the OUTPUT parameter in your sproc in your parameter list of the calling function like so:</p> <pre><code>[Parameter(Name = "InsertedContractID", DbType = "Int")] ref System.Nullable<int> insertedContractID </code></pre> <p>Then you have to do</p> <pre><code>insertedContractID = ((System.Nullable<int>)(result.GetParameterValue(16))); </code></pre> <p>once you've called it. Then you can use this outside of it:</p> <pre><code>public int? CreateContract(Contract contractToCreate) { System.Nullable<int> insertedContractID = null; ref insertedContractID); return insertedContractID; } </code></pre> <p>Take heavy note of <code>GetParameterValue(16)</code>. It's indexed to whichever parameter it is in your parameter list (this isn't the full code, by the way).</p>

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