Question : In .NET, how can I add to a variable value to a query result using LINQ to SQL?

I am using LINQ to obtain results for 3 values from a database used to populate a datagrid.  I have a fourth value I'd like to add to the datagrid but it doesn't come from the database, its a value i set programmatically.  Datagrid  currently looks like:

TransID    |    ORI     |      TCN
------------|-----------|-------------
xxxxx      | yyyy      | zzzz

But I want it to be like:
TransID    |    ORI     |      TCN     |     Availability
------------|-----------|-------------|--------------------
xxxxx      | yyyy      | zzzz         |     {string value}

Here's the code I use to get the database values, can someone help me complete it so I can add an arbitrary string to the list generated by the SQL Query?  Thank you.

        Dim db As New TransactionDataDataContext
        Try
            'Dim listTrans = (From trans In db.TransHeaderTables _
            '                Where trans.EncryptionORI = ORI _
            '                Select trans.TransId, trans.EncryptionTCN, trans.EncryptionORI).ToList
            Dim listTrans = db.ExecuteQuery(Of TransHeaderTable)( _
                "Select dbo.XXX.TransId, dbo.XXX.EncryptionORI, dbo.XXX.EncryptionTCN FROM XXX.dbo.TransHeader" _
                ).ToList
            Return listTrans

        Catch ex As Exception
            msg = "Failed to query the database for transaction list: " & ex.ToString
            return nothing
        End Try

Answer : In .NET, how can I add to a variable value to a query result using LINQ to SQL?

yes, the servers can be different builds, however, if you failover to the scr node with sp3 you do not want to failback until you have updated the original source