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POOpen connection while another connection is open
 

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    <p>i need to call a function that do some query while another connection is opened and its doing a transaction.</p> <p>Ok i get this is weird, here some code:</p> <p>Main part:</p> <pre><code>Using connection As New SqlConnection(connectionString) connection.Open() Dim command As SqlCommand = connection.CreateCommand() Dim transaction As SqlTransaction transaction = connection.BeginTransaction("myTransaction") command.Connection = connection command.Transaction = transaction command.CommandText = sSQL Try command.ExecuteNonQuery() Dim functionResult As String = myFunction(param1, param2) If functionResult &lt;&gt; "" Then 'error! i need to rollback the first query done here! transaction.Rollback() else transaction.Commit() End If Catch ex As Exception transaction.Rollback() End Try End If End Using </code></pre> <p><em>myFunction</em> do lot of stuff, and a lot of querys. Every query needs to reopen connection (without transaction this time) but everytime i try to execute the first query inside my function i got timeout error from database (after 30 seconds).</p> <p>I know i can do this work "copy-pasting" all the myFunction code inside that already opened connection and using the already opened connection, but i use that function more than once and i don't want to mess up my code.</p> <p>How can i solve this?</p> <p>edit for more information: that was an already reduced version of the code i'm using, but here a reduced version on what "myFunction" do:</p> <pre><code>Dim connectionString As String = "my connection string" Dim queryString As String = "SELECT id FROM foo WHERE param1 = @myValue" Dim ds As DataSet = New DataSet() Try Using connection As New SqlConnection(connectionString) Dim command As New SqlCommand(queryString, connection) connection.Open() command.CommandText = queryString command.Parameters.Add("@myValue", SqlDbType.Int).Value = 10 Dim adapter As New SqlDataAdapter() adapter.SelectCommand = command adapter.Fill(ds, "randomName") If ds.Tables("randomName").Rows.Count &lt; 0 Then 'error! connection.Close() Return "error" End If End Using Catch ex As Exception Return "Database error - " &amp; ex.Message End Try </code></pre> <p>The code execution (even in debug) freeze on the <code>adapter.Fill(ds, "randomName")</code> command for 30 seconds, after that i get a timout error</p>
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    1. COwell, one connection is the one on the first piece of code, the second connection is opened from "myFunction" that is called while the first connection is still open!
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    2. COYep, you are right, I missed this part - but then realized afterwards, thanks for your fast response. Why not do `transaction.Commit()` after `ExecuteNonQuery`? What's in `sSQL`? What I mean is that your transaction is actually over at that point, because SELECT is usually not transactional, only UPDATES/INSERTS are. So it looks like these code pieces can go **in sequence**, instead of being nested in each other.
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    3. CObecause the "myFunction" do some SELECT and some UPDATE, if it fails i need to rollback the first query done in main code. Still, i can't get to the myFunction's UPDATE because it fails before, on the first SELECT
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