problem with connection string

[GusBeare]

I have the following code:

 using (var context = new DataContext("SiteSQLServer",Transaction.Begin))
            {
                var job = new DataObject<omv_JobSeekerReferences>();
                int cntr = 1;
                foreach (var item in ViewState)
                {
                    omv_JobSeekerReferences r = (omv_JobSeekerReferences) ViewState["item_" + cntr];

                    var newRefRow = new omv_JobSeekerReferences { UserId = r.UserId,Company = r.Company, FromDate = r.FromDate, ToDate = r.ToDate };
                    job.Insert(newRefRow); // add the new row to the table
                    cntr++; 
                }
            }

It blows on job.Insert complaining that it can't find the connection string "Default".
Am I doing something wrong? It works fine if I add a default connection string and the row is inserted.

[GusBeare]

I thought this might fix it:

  using (var context = new DataContext("SiteSQLServer", Transaction.Begin))
                    {
                        job.Insert(newRefRow); 
                    }

But same error.

[GusBeare]

Never mind:

  job.Insert(newRefRow,context); 

pass the context into the insert.