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05.12.2004 at 01:27PM PDT, ID: 20987290
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6.2

sqlClient connection pooling, thread safety.

Asked by bswiftly in .NET

I have a multithreaded VB.NET app, and this is my approach.  I have used one connection object that multple threads can use.

then there is an openconnection and closeconnection method that is called throughout different threads... the cn (connection) object is public (not shared) to the class.  Should I make it shared or what?

        Private Sub openConnection()
            Try
                cnTest += 1
                If Not cn.State = ConnectionState.Open Then
                    cn.Open()
                End If
            Catch ioe As InvalidOperationException
                elog.writeEventLog("Connection error #" & cnTest & " in SlaveProcess.OpenConnection()" & vbCrLf & ioe.ToString, EventLogEntryType.Error)
                Thread.Sleep(100)
                openConnection()
            Catch eo As SqlException
                elog.writeEventLog("Connection error #" & cnTest & " in SlaveProcess.OpenConnection()" & vbCrLf & eo.ToString, EventLogEntryType.Error)
            Catch ex As Exception
                elog.writeEventLog("Connection error #" & cnTest & " in SlaveProcess.OpenConnection()" & vbCrLf & ex.ToString, EventLogEntryType.Error)
                Thread.Sleep(100)
                openConnection()
            End Try
        End Sub


Now I know this is probably not the best way, I've never set up a true thread-safe connection pool before.  I also know that the sqlclient is SUPPOSED to handle the connection pooling for you, but I am still getting some errors.  

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[+][-]05.12.2004 at 01:33PM PDT, ID: 11053675

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Solution Provided By: majodio
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Solution Grade: A
 
 
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